/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 04:54:59,419 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 04:54:59,502 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 04:54:59,509 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 04:54:59,509 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 04:54:59,545 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 04:54:59,545 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 04:54:59,546 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 04:54:59,546 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 04:54:59,551 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 04:54:59,551 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 04:54:59,552 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 04:54:59,552 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 04:54:59,553 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 04:54:59,554 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 04:54:59,554 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 04:54:59,554 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 04:54:59,554 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 04:54:59,554 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 04:54:59,556 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 04:54:59,556 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 04:54:59,556 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 04:54:59,557 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 04:54:59,557 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 04:54:59,557 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 04:54:59,557 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 04:54:59,557 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 04:54:59,558 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 04:54:59,558 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 04:54:59,558 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 04:54:59,559 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 04:54:59,559 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 04:54:59,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 04:54:59,560 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 04:54:59,560 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 04:54:59,560 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 04:54:59,560 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 04:54:59,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 04:54:59,561 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 04:54:59,561 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 04:54:59,561 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 04:54:59,561 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 04:54:59,561 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 04:54:59,561 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 04:54:59,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 04:54:59,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 04:54:59,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 04:54:59,829 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 04:54:59,829 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 04:54:59,830 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label36.c [2023-12-19 04:55:00,993 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 04:55:01,386 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 04:55:01,387 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label36.c [2023-12-19 04:55:01,427 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/130ef8cfc/d9360e51b2cc4967b6d2601d929c9f0b/FLAG476b5d5b0 [2023-12-19 04:55:01,440 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/130ef8cfc/d9360e51b2cc4967b6d2601d929c9f0b [2023-12-19 04:55:01,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 04:55:01,443 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 04:55:01,445 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 04:55:01,445 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 04:55:01,449 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 04:55:01,449 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:55:01" (1/1) ... [2023-12-19 04:55:01,450 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53c197f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:55:01, skipping insertion in model container [2023-12-19 04:55:01,450 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:55:01" (1/1) ... [2023-12-19 04:55:01,586 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 04:55:01,856 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label36.c[4552,4565] [2023-12-19 04:55:02,842 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 04:55:02,853 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 04:55:02,878 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label36.c[4552,4565] [2023-12-19 04:55:03,383 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 04:55:03,408 INFO L206 MainTranslator]: Completed translation [2023-12-19 04:55:03,410 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:55:03 WrapperNode [2023-12-19 04:55:03,410 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 04:55:03,411 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 04:55:03,411 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 04:55:03,411 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 04:55:03,416 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:55:03" (1/1) ... [2023-12-19 04:55:03,511 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:55:03" (1/1) ... [2023-12-19 04:55:04,220 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9431 [2023-12-19 04:55:04,220 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 04:55:04,221 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 04:55:04,221 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 04:55:04,221 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 04:55:04,230 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:55:03" (1/1) ... [2023-12-19 04:55:04,230 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:55:03" (1/1) ... [2023-12-19 04:55:04,473 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:55:03" (1/1) ... [2023-12-19 04:55:04,821 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 04:55:04,821 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:55:03" (1/1) ... [2023-12-19 04:55:04,821 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:55:03" (1/1) ... [2023-12-19 04:55:05,403 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:55:03" (1/1) ... [2023-12-19 04:55:05,462 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:55:03" (1/1) ... [2023-12-19 04:55:05,505 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:55:03" (1/1) ... [2023-12-19 04:55:05,537 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:55:03" (1/1) ... [2023-12-19 04:55:05,689 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 04:55:05,691 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 04:55:05,691 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 04:55:05,691 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 04:55:05,692 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:55:03" (1/1) ... [2023-12-19 04:55:05,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 04:55:05,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:55:05,729 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 04:55:05,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 04:55:05,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 04:55:05,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 04:55:05,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 04:55:05,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 04:55:05,863 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 04:55:05,865 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 04:55:12,277 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 04:55:12,357 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 04:55:12,357 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 04:55:12,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:55:12 BoogieIcfgContainer [2023-12-19 04:55:12,358 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 04:55:12,360 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 04:55:12,360 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 04:55:12,363 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 04:55:12,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 04:55:01" (1/3) ... [2023-12-19 04:55:12,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709b3a65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:55:12, skipping insertion in model container [2023-12-19 04:55:12,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:55:03" (2/3) ... [2023-12-19 04:55:12,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709b3a65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:55:12, skipping insertion in model container [2023-12-19 04:55:12,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:55:12" (3/3) ... [2023-12-19 04:55:12,366 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label36.c [2023-12-19 04:55:12,379 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 04:55:12,379 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 04:55:12,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 04:55:12,459 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;@787c077a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 04:55:12,460 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 04:55:12,469 INFO L276 IsEmpty]: Start isEmpty. Operand has 1686 states, 1684 states have (on average 1.902019002375297) internal successors, (3203), 1685 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:55:12,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-19 04:55:12,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:55:12,477 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] [2023-12-19 04:55:12,477 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:55:12,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:55:12,483 INFO L85 PathProgramCache]: Analyzing trace with hash 55631412, now seen corresponding path program 1 times [2023-12-19 04:55:12,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:55:12,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344481048] [2023-12-19 04:55:12,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:55:12,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:55:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:55:12,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:55:12,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:55:12,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344481048] [2023-12-19 04:55:12,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344481048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:55:12,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:55:12,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:55:12,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943446649] [2023-12-19 04:55:12,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:55:12,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 04:55:12,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:55:12,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 04:55:12,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 04:55:12,754 INFO L87 Difference]: Start difference. First operand has 1686 states, 1684 states have (on average 1.902019002375297) internal successors, (3203), 1685 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:55:12,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:55:12,839 INFO L93 Difference]: Finished difference Result 3371 states and 6405 transitions. [2023-12-19 04:55:12,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 04:55:12,841 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2023-12-19 04:55:12,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:55:12,858 INFO L225 Difference]: With dead ends: 3371 [2023-12-19 04:55:12,859 INFO L226 Difference]: Without dead ends: 1684 [2023-12-19 04:55:12,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 04:55:12,868 INFO L413 NwaCegarLoop]: 3138 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:55:12,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3138 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 04:55:12,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2023-12-19 04:55:12,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1684. [2023-12-19 04:55:12,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 1.8645276292335116) internal successors, (3138), 1683 states have internal predecessors, (3138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:55:12,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 3138 transitions. [2023-12-19 04:55:12,945 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 3138 transitions. Word has length 32 [2023-12-19 04:55:12,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:55:12,945 INFO L495 AbstractCegarLoop]: Abstraction has 1684 states and 3138 transitions. [2023-12-19 04:55:12,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:55:12,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 3138 transitions. [2023-12-19 04:55:12,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-19 04:55:12,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:55:12,946 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] [2023-12-19 04:55:12,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 04:55:12,946 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:55:12,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:55:12,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1901743824, now seen corresponding path program 1 times [2023-12-19 04:55:12,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:55:12,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145557266] [2023-12-19 04:55:12,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:55:12,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:55:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:55:13,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:55:13,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:55:13,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145557266] [2023-12-19 04:55:13,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145557266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:55:13,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:55:13,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:55:13,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582184168] [2023-12-19 04:55:13,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:55:13,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:55:13,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:55:13,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:55:13,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:55:13,092 INFO L87 Difference]: Start difference. First operand 1684 states and 3138 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:55:19,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:55:19,335 INFO L93 Difference]: Finished difference Result 4811 states and 9064 transitions. [2023-12-19 04:55:19,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:55:19,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2023-12-19 04:55:19,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:55:19,348 INFO L225 Difference]: With dead ends: 4811 [2023-12-19 04:55:19,348 INFO L226 Difference]: Without dead ends: 3128 [2023-12-19 04:55:19,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:55:19,352 INFO L413 NwaCegarLoop]: 1324 mSDtfsCounter, 1574 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 4269 mSolverCounterSat, 1473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 5742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1473 IncrementalHoareTripleChecker+Valid, 4269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:55:19,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1574 Valid, 1543 Invalid, 5742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1473 Valid, 4269 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-19 04:55:19,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3128 states. [2023-12-19 04:55:19,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3128 to 3107. [2023-12-19 04:55:19,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3107 states, 3106 states have (on average 1.601416613007083) internal successors, (4974), 3106 states have internal predecessors, (4974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:55:19,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 4974 transitions. [2023-12-19 04:55:19,409 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 4974 transitions. Word has length 32 [2023-12-19 04:55:19,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:55:19,410 INFO L495 AbstractCegarLoop]: Abstraction has 3107 states and 4974 transitions. [2023-12-19 04:55:19,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:55:19,410 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 4974 transitions. [2023-12-19 04:55:19,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-19 04:55:19,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:55:19,412 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:55:19,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 04:55:19,413 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:55:19,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:55:19,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1430587133, now seen corresponding path program 1 times [2023-12-19 04:55:19,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:55:19,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773443462] [2023-12-19 04:55:19,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:55:19,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:55:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:55:19,743 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:55:19,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:55:19,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773443462] [2023-12-19 04:55:19,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773443462] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:55:19,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:55:19,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:55:19,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114787945] [2023-12-19 04:55:19,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:55:19,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:55:19,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:55:19,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:55:19,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:55:19,751 INFO L87 Difference]: Start difference. First operand 3107 states and 4974 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:55:28,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:55:28,748 INFO L93 Difference]: Finished difference Result 10358 states and 16186 transitions. [2023-12-19 04:55:28,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:55:28,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-19 04:55:28,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:55:28,802 INFO L225 Difference]: With dead ends: 10358 [2023-12-19 04:55:28,802 INFO L226 Difference]: Without dead ends: 7252 [2023-12-19 04:55:28,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:55:28,827 INFO L413 NwaCegarLoop]: 1022 mSDtfsCounter, 4322 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 9505 mSolverCounterSat, 1498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4322 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 11003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1498 IncrementalHoareTripleChecker+Valid, 9505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:55:28,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4322 Valid, 1290 Invalid, 11003 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1498 Valid, 9505 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2023-12-19 04:55:28,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7252 states. [2023-12-19 04:55:28,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7252 to 7248. [2023-12-19 04:55:28,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7248 states, 7247 states have (on average 1.4503932661791086) internal successors, (10511), 7247 states have internal predecessors, (10511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:55:29,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7248 states to 7248 states and 10511 transitions. [2023-12-19 04:55:29,070 INFO L78 Accepts]: Start accepts. Automaton has 7248 states and 10511 transitions. Word has length 99 [2023-12-19 04:55:29,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:55:29,071 INFO L495 AbstractCegarLoop]: Abstraction has 7248 states and 10511 transitions. [2023-12-19 04:55:29,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:55:29,071 INFO L276 IsEmpty]: Start isEmpty. Operand 7248 states and 10511 transitions. [2023-12-19 04:55:29,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2023-12-19 04:55:29,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:55:29,079 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:55:29,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 04:55:29,080 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:55:29,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:55:29,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1142514153, now seen corresponding path program 1 times [2023-12-19 04:55:29,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:55:29,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752274126] [2023-12-19 04:55:29,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:55:29,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:55:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:55:30,057 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-19 04:55:30,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:55:30,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752274126] [2023-12-19 04:55:30,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752274126] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:55:30,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:55:30,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:55:30,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733088882] [2023-12-19 04:55:30,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:55:30,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:55:30,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:55:30,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:55:30,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:55:30,063 INFO L87 Difference]: Start difference. First operand 7248 states and 10511 transitions. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:55:38,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:55:38,277 INFO L93 Difference]: Finished difference Result 17268 states and 24866 transitions. [2023-12-19 04:55:38,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:55:38,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 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 306 [2023-12-19 04:55:38,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:55:38,307 INFO L225 Difference]: With dead ends: 17268 [2023-12-19 04:55:38,307 INFO L226 Difference]: Without dead ends: 11386 [2023-12-19 04:55:38,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:55:38,313 INFO L413 NwaCegarLoop]: 1801 mSDtfsCounter, 3755 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 9456 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3755 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 9886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 9456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:55:38,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3755 Valid, 2155 Invalid, 9886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 9456 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2023-12-19 04:55:38,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11386 states. [2023-12-19 04:55:38,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11386 to 11366. [2023-12-19 04:55:38,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11366 states, 11365 states have (on average 1.328640563132424) internal successors, (15100), 11365 states have internal predecessors, (15100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:55:38,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11366 states to 11366 states and 15100 transitions. [2023-12-19 04:55:38,468 INFO L78 Accepts]: Start accepts. Automaton has 11366 states and 15100 transitions. Word has length 306 [2023-12-19 04:55:38,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:55:38,469 INFO L495 AbstractCegarLoop]: Abstraction has 11366 states and 15100 transitions. [2023-12-19 04:55:38,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:55:38,470 INFO L276 IsEmpty]: Start isEmpty. Operand 11366 states and 15100 transitions. [2023-12-19 04:55:38,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2023-12-19 04:55:38,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:55:38,476 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:55:38,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 04:55:38,476 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:55:38,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:55:38,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1416557763, now seen corresponding path program 1 times [2023-12-19 04:55:38,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:55:38,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002673487] [2023-12-19 04:55:38,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:55:38,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:55:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:55:38,887 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-19 04:55:38,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:55:38,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002673487] [2023-12-19 04:55:38,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002673487] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:55:38,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:55:38,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:55:38,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177365680] [2023-12-19 04:55:38,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:55:38,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:55:38,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:55:38,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:55:38,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:55:38,890 INFO L87 Difference]: Start difference. First operand 11366 states and 15100 transitions. Second operand has 4 states, 4 states have (on average 82.5) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:55:44,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:55:44,429 INFO L93 Difference]: Finished difference Result 20032 states and 27482 transitions. [2023-12-19 04:55:44,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:55:44,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.5) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 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 334 [2023-12-19 04:55:44,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:55:44,473 INFO L225 Difference]: With dead ends: 20032 [2023-12-19 04:55:44,473 INFO L226 Difference]: Without dead ends: 11366 [2023-12-19 04:55:44,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:55:44,481 INFO L413 NwaCegarLoop]: 1773 mSDtfsCounter, 1151 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 5716 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 1951 SdHoareTripleChecker+Invalid, 5724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 5716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:55:44,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 1951 Invalid, 5724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 5716 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-19 04:55:44,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11366 states. [2023-12-19 04:55:44,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11366 to 11366. [2023-12-19 04:55:44,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11366 states, 11365 states have (on average 1.3274967003959526) internal successors, (15087), 11365 states have internal predecessors, (15087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:55:44,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11366 states to 11366 states and 15087 transitions. [2023-12-19 04:55:44,750 INFO L78 Accepts]: Start accepts. Automaton has 11366 states and 15087 transitions. Word has length 334 [2023-12-19 04:55:44,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:55:44,751 INFO L495 AbstractCegarLoop]: Abstraction has 11366 states and 15087 transitions. [2023-12-19 04:55:44,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.5) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:55:44,752 INFO L276 IsEmpty]: Start isEmpty. Operand 11366 states and 15087 transitions. [2023-12-19 04:55:44,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2023-12-19 04:55:44,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:55:44,757 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:55:44,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 04:55:44,757 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:55:44,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:55:44,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1976866001, now seen corresponding path program 1 times [2023-12-19 04:55:44,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:55:44,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231750019] [2023-12-19 04:55:44,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:55:44,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:55:44,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:55:45,099 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:55:45,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:55:45,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231750019] [2023-12-19 04:55:45,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231750019] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:55:45,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:55:45,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:55:45,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609618189] [2023-12-19 04:55:45,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:55:45,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:55:45,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:55:45,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:55:45,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:55:45,102 INFO L87 Difference]: Start difference. First operand 11366 states and 15087 transitions. Second operand has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:55:50,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:55:50,954 INFO L93 Difference]: Finished difference Result 25556 states and 36130 transitions. [2023-12-19 04:55:50,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:55:50,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 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 519 [2023-12-19 04:55:50,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:55:50,991 INFO L225 Difference]: With dead ends: 25556 [2023-12-19 04:55:50,992 INFO L226 Difference]: Without dead ends: 16921 [2023-12-19 04:55:51,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:55:51,005 INFO L413 NwaCegarLoop]: 2757 mSDtfsCounter, 1488 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 4069 mSolverCounterSat, 1816 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 2933 SdHoareTripleChecker+Invalid, 5885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1816 IncrementalHoareTripleChecker+Valid, 4069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:55:51,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 2933 Invalid, 5885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1816 Valid, 4069 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-19 04:55:51,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16921 states. [2023-12-19 04:55:51,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16921 to 16875. [2023-12-19 04:55:51,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16875 states, 16874 states have (on average 1.2959582790091264) internal successors, (21868), 16874 states have internal predecessors, (21868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:55:51,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16875 states to 16875 states and 21868 transitions. [2023-12-19 04:55:51,254 INFO L78 Accepts]: Start accepts. Automaton has 16875 states and 21868 transitions. Word has length 519 [2023-12-19 04:55:51,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:55:51,255 INFO L495 AbstractCegarLoop]: Abstraction has 16875 states and 21868 transitions. [2023-12-19 04:55:51,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:55:51,255 INFO L276 IsEmpty]: Start isEmpty. Operand 16875 states and 21868 transitions. [2023-12-19 04:55:51,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2023-12-19 04:55:51,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:55:51,348 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:55:51,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 04:55:51,348 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:55:51,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:55:51,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1127137386, now seen corresponding path program 1 times [2023-12-19 04:55:51,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:55:51,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851665516] [2023-12-19 04:55:51,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:55:51,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:55:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:55:51,994 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 83 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:55:51,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:55:51,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851665516] [2023-12-19 04:55:51,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851665516] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:55:51,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119277078] [2023-12-19 04:55:51,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:55:51,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:55:51,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:55:51,998 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 04:55:52,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 04:55:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:55:52,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 04:55:52,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:55:52,325 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:55:52,325 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:55:52,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119277078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:55:52,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:55:52,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-19 04:55:52,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484661681] [2023-12-19 04:55:52,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:55:52,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:55:52,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:55:52,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:55:52,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:55:52,329 INFO L87 Difference]: Start difference. First operand 16875 states and 21868 transitions. Second operand has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:55:58,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:55:58,236 INFO L93 Difference]: Finished difference Result 43302 states and 57895 transitions. [2023-12-19 04:55:58,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:55:58,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 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 588 [2023-12-19 04:55:58,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:55:58,283 INFO L225 Difference]: With dead ends: 43302 [2023-12-19 04:55:58,283 INFO L226 Difference]: Without dead ends: 29158 [2023-12-19 04:55:58,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 587 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:55:58,295 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 2532 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4055 mSolverCounterSat, 1472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2532 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 5527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1472 IncrementalHoareTripleChecker+Valid, 4055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:55:58,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2532 Valid, 814 Invalid, 5527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1472 Valid, 4055 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-19 04:55:58,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29158 states. [2023-12-19 04:55:58,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29158 to 29154. [2023-12-19 04:55:58,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29154 states, 29153 states have (on average 1.2976023050800947) internal successors, (37829), 29153 states have internal predecessors, (37829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:55:58,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29154 states to 29154 states and 37829 transitions. [2023-12-19 04:55:58,634 INFO L78 Accepts]: Start accepts. Automaton has 29154 states and 37829 transitions. Word has length 588 [2023-12-19 04:55:58,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:55:58,635 INFO L495 AbstractCegarLoop]: Abstraction has 29154 states and 37829 transitions. [2023-12-19 04:55:58,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:55:58,636 INFO L276 IsEmpty]: Start isEmpty. Operand 29154 states and 37829 transitions. [2023-12-19 04:55:58,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2023-12-19 04:55:58,648 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:55:58,650 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:55:58,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 04:55:58,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:55:58,859 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:55:58,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:55:58,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1900990950, now seen corresponding path program 1 times [2023-12-19 04:55:58,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:55:58,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873294704] [2023-12-19 04:55:58,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:55:58,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:55:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:56:00,146 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 61 proven. 40 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-12-19 04:56:00,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:56:00,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873294704] [2023-12-19 04:56:00,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873294704] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:56:00,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275503272] [2023-12-19 04:56:00,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:56:00,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:56:00,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:56:00,165 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 04:56:00,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 04:56:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:56:00,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 04:56:00,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:56:00,511 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:56:00,511 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:56:00,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275503272] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:56:00,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:56:00,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-19 04:56:00,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277326364] [2023-12-19 04:56:00,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:56:00,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:56:00,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:56:00,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:56:00,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:56:00,514 INFO L87 Difference]: Start difference. First operand 29154 states and 37829 transitions. Second operand has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:56:06,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:56:06,133 INFO L93 Difference]: Finished difference Result 77414 states and 102355 transitions. [2023-12-19 04:56:06,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:56:06,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 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 641 [2023-12-19 04:56:06,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:56:06,235 INFO L225 Difference]: With dead ends: 77414 [2023-12-19 04:56:06,235 INFO L226 Difference]: Without dead ends: 50991 [2023-12-19 04:56:06,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 644 GetRequests, 640 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:56:06,282 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 1543 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 3904 mSolverCounterSat, 1728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 5632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1728 IncrementalHoareTripleChecker+Valid, 3904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:56:06,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 1674 Invalid, 5632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1728 Valid, 3904 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-19 04:56:06,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50991 states. [2023-12-19 04:56:06,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50991 to 46895. [2023-12-19 04:56:06,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46895 states, 46894 states have (on average 1.215955132852817) internal successors, (57021), 46894 states have internal predecessors, (57021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:56:07,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46895 states to 46895 states and 57021 transitions. [2023-12-19 04:56:07,013 INFO L78 Accepts]: Start accepts. Automaton has 46895 states and 57021 transitions. Word has length 641 [2023-12-19 04:56:07,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:56:07,014 INFO L495 AbstractCegarLoop]: Abstraction has 46895 states and 57021 transitions. [2023-12-19 04:56:07,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:56:07,014 INFO L276 IsEmpty]: Start isEmpty. Operand 46895 states and 57021 transitions. [2023-12-19 04:56:07,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2023-12-19 04:56:07,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:56:07,022 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:56:07,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 04:56:07,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 04:56:07,229 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:56:07,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:56:07,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1632505144, now seen corresponding path program 1 times [2023-12-19 04:56:07,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:56:07,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737759337] [2023-12-19 04:56:07,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:56:07,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:56:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:56:08,174 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2023-12-19 04:56:08,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:56:08,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737759337] [2023-12-19 04:56:08,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737759337] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:56:08,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:56:08,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:56:08,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556382234] [2023-12-19 04:56:08,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:56:08,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:56:08,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:56:08,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:56:08,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:56:08,177 INFO L87 Difference]: Start difference. First operand 46895 states and 57021 transitions. Second operand has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:56:19,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:56:19,770 INFO L93 Difference]: Finished difference Result 151283 states and 187637 transitions. [2023-12-19 04:56:19,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:56:19,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 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 731 [2023-12-19 04:56:19,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:56:19,951 INFO L225 Difference]: With dead ends: 151283 [2023-12-19 04:56:19,951 INFO L226 Difference]: Without dead ends: 107119 [2023-12-19 04:56:19,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:56:19,984 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 3359 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 8623 mSolverCounterSat, 3023 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3359 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 11646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3023 IncrementalHoareTripleChecker+Valid, 8623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:56:19,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3359 Valid, 1025 Invalid, 11646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3023 Valid, 8623 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2023-12-19 04:56:20,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107119 states. [2023-12-19 04:56:21,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107119 to 102937. [2023-12-19 04:56:21,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102937 states, 102936 states have (on average 1.1985408409108573) internal successors, (123373), 102936 states have internal predecessors, (123373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:56:21,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102937 states to 102937 states and 123373 transitions. [2023-12-19 04:56:21,566 INFO L78 Accepts]: Start accepts. Automaton has 102937 states and 123373 transitions. Word has length 731 [2023-12-19 04:56:21,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:56:21,567 INFO L495 AbstractCegarLoop]: Abstraction has 102937 states and 123373 transitions. [2023-12-19 04:56:21,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:56:21,567 INFO L276 IsEmpty]: Start isEmpty. Operand 102937 states and 123373 transitions. [2023-12-19 04:56:21,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 863 [2023-12-19 04:56:21,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:56:21,578 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:56:21,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 04:56:21,579 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:56:21,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:56:21,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1807893502, now seen corresponding path program 1 times [2023-12-19 04:56:21,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:56:21,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334755280] [2023-12-19 04:56:21,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:56:21,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:56:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:56:22,221 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-12-19 04:56:22,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:56:22,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334755280] [2023-12-19 04:56:22,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334755280] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:56:22,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:56:22,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:56:22,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192835001] [2023-12-19 04:56:22,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:56:22,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:56:22,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:56:22,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:56:22,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:56:22,224 INFO L87 Difference]: Start difference. First operand 102937 states and 123373 transitions. Second operand has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 2 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:56:29,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:56:29,522 INFO L93 Difference]: Finished difference Result 238645 states and 286755 transitions. [2023-12-19 04:56:29,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:56:29,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 2 states have internal predecessors, (601), 0 states have call successors, (0), 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 862 [2023-12-19 04:56:29,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:56:29,803 INFO L225 Difference]: With dead ends: 238645 [2023-12-19 04:56:29,804 INFO L226 Difference]: Without dead ends: 138439 [2023-12-19 04:56:29,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:56:29,872 INFO L413 NwaCegarLoop]: 664 mSDtfsCounter, 1372 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 3924 mSolverCounterSat, 2088 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 6012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2088 IncrementalHoareTripleChecker+Valid, 3924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:56:29,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 708 Invalid, 6012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2088 Valid, 3924 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-12-19 04:56:30,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138439 states. [2023-12-19 04:56:31,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138439 to 137061. [2023-12-19 04:56:31,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137061 states, 137060 states have (on average 1.1735955056179774) internal successors, (160853), 137060 states have internal predecessors, (160853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:56:32,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137061 states to 137061 states and 160853 transitions. [2023-12-19 04:56:32,322 INFO L78 Accepts]: Start accepts. Automaton has 137061 states and 160853 transitions. Word has length 862 [2023-12-19 04:56:32,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:56:32,323 INFO L495 AbstractCegarLoop]: Abstraction has 137061 states and 160853 transitions. [2023-12-19 04:56:32,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 2 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:56:32,323 INFO L276 IsEmpty]: Start isEmpty. Operand 137061 states and 160853 transitions. [2023-12-19 04:56:32,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 893 [2023-12-19 04:56:32,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:56:32,331 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:56:32,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 04:56:32,332 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:56:32,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:56:32,332 INFO L85 PathProgramCache]: Analyzing trace with hash 583428483, now seen corresponding path program 1 times [2023-12-19 04:56:32,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:56:32,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705471043] [2023-12-19 04:56:32,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:56:32,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:56:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:56:32,906 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2023-12-19 04:56:32,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:56:32,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705471043] [2023-12-19 04:56:32,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705471043] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:56:32,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:56:32,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:56:32,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493992498] [2023-12-19 04:56:32,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:56:32,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:56:32,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:56:32,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:56:32,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:56:32,908 INFO L87 Difference]: Start difference. First operand 137061 states and 160853 transitions. Second operand has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:56:44,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:56:44,340 INFO L93 Difference]: Finished difference Result 338276 states and 405794 transitions. [2023-12-19 04:56:44,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:56:44,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 0 states have call successors, (0), 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 892 [2023-12-19 04:56:44,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:56:44,774 INFO L225 Difference]: With dead ends: 338276 [2023-12-19 04:56:44,778 INFO L226 Difference]: Without dead ends: 203946 [2023-12-19 04:56:45,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:56:45,075 INFO L413 NwaCegarLoop]: 2905 mSDtfsCounter, 2823 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 12308 mSolverCounterSat, 1270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2823 SdHoareTripleChecker+Valid, 3373 SdHoareTripleChecker+Invalid, 13578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1270 IncrementalHoareTripleChecker+Valid, 12308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:56:45,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2823 Valid, 3373 Invalid, 13578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1270 Valid, 12308 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2023-12-19 04:56:45,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203946 states. [2023-12-19 04:56:47,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203946 to 182097. [2023-12-19 04:56:47,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182097 states, 182096 states have (on average 1.1698005447675952) internal successors, (213016), 182096 states have internal predecessors, (213016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:56:48,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182097 states to 182097 states and 213016 transitions. [2023-12-19 04:56:48,103 INFO L78 Accepts]: Start accepts. Automaton has 182097 states and 213016 transitions. Word has length 892 [2023-12-19 04:56:48,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:56:48,104 INFO L495 AbstractCegarLoop]: Abstraction has 182097 states and 213016 transitions. [2023-12-19 04:56:48,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:56:48,105 INFO L276 IsEmpty]: Start isEmpty. Operand 182097 states and 213016 transitions. [2023-12-19 04:56:48,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 991 [2023-12-19 04:56:48,346 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:56:48,347 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:56:48,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 04:56:48,347 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:56:48,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:56:48,348 INFO L85 PathProgramCache]: Analyzing trace with hash 644293752, now seen corresponding path program 1 times [2023-12-19 04:56:48,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:56:48,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629980969] [2023-12-19 04:56:48,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:56:48,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:56:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:56:50,151 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 707 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-12-19 04:56:50,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:56:50,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629980969] [2023-12-19 04:56:50,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629980969] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:56:50,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:56:50,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:56:50,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027182788] [2023-12-19 04:56:50,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:56:50,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:56:50,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:56:50,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:56:50,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:56:50,154 INFO L87 Difference]: Start difference. First operand 182097 states and 213016 transitions. Second operand has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:56:57,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:56:57,927 INFO L93 Difference]: Finished difference Result 431140 states and 506853 transitions. [2023-12-19 04:56:57,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:56:57,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 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 990 [2023-12-19 04:56:57,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:56:58,729 INFO L225 Difference]: With dead ends: 431140 [2023-12-19 04:56:58,729 INFO L226 Difference]: Without dead ends: 251774 [2023-12-19 04:56:58,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:56:58,893 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 1574 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 4240 mSolverCounterSat, 2278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 6518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2278 IncrementalHoareTripleChecker+Valid, 4240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:56:58,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1574 Valid, 615 Invalid, 6518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2278 Valid, 4240 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-19 04:56:59,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251774 states. [2023-12-19 04:57:02,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251774 to 242148. [2023-12-19 04:57:02,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242148 states, 242147 states have (on average 1.1797214088962489) internal successors, (285666), 242147 states have internal predecessors, (285666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:57:03,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242148 states to 242148 states and 285666 transitions. [2023-12-19 04:57:03,196 INFO L78 Accepts]: Start accepts. Automaton has 242148 states and 285666 transitions. Word has length 990 [2023-12-19 04:57:03,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:57:03,197 INFO L495 AbstractCegarLoop]: Abstraction has 242148 states and 285666 transitions. [2023-12-19 04:57:03,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:57:03,197 INFO L276 IsEmpty]: Start isEmpty. Operand 242148 states and 285666 transitions. [2023-12-19 04:57:03,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1015 [2023-12-19 04:57:03,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:57:03,210 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:57:03,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 04:57:03,210 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:57:03,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:57:03,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1569582042, now seen corresponding path program 1 times [2023-12-19 04:57:03,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:57:03,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197161395] [2023-12-19 04:57:03,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:57:03,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:57:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:57:04,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 552 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2023-12-19 04:57:04,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:57:04,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197161395] [2023-12-19 04:57:04,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197161395] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:57:04,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:57:04,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:57:04,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273284734] [2023-12-19 04:57:04,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:57:04,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:57:04,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:57:04,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:57:04,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:57:04,113 INFO L87 Difference]: Start difference. First operand 242148 states and 285666 transitions. Second operand has 4 states, 4 states have (on average 162.25) internal successors, (649), 4 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:57:11,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-19 04:57:17,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:57:17,700 INFO L93 Difference]: Finished difference Result 611261 states and 732413 transitions. [2023-12-19 04:57:17,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:57:17,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 162.25) internal successors, (649), 4 states have internal predecessors, (649), 0 states have call successors, (0), 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 1014 [2023-12-19 04:57:17,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:57:18,882 INFO L225 Difference]: With dead ends: 611261 [2023-12-19 04:57:18,882 INFO L226 Difference]: Without dead ends: 371844 [2023-12-19 04:57:19,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:57:19,043 INFO L413 NwaCegarLoop]: 702 mSDtfsCounter, 5104 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 5830 mSolverCounterSat, 3998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5104 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 9828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3998 IncrementalHoareTripleChecker+Valid, 5830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:57:19,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5104 Valid, 841 Invalid, 9828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3998 Valid, 5830 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2023-12-19 04:57:19,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371844 states. [2023-12-19 04:57:23,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371844 to 329512. [2023-12-19 04:57:23,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329512 states, 329511 states have (on average 1.1547171414611348) internal successors, (380492), 329511 states have internal predecessors, (380492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:57:24,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329512 states to 329512 states and 380492 transitions. [2023-12-19 04:57:24,740 INFO L78 Accepts]: Start accepts. Automaton has 329512 states and 380492 transitions. Word has length 1014 [2023-12-19 04:57:24,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:57:24,741 INFO L495 AbstractCegarLoop]: Abstraction has 329512 states and 380492 transitions. [2023-12-19 04:57:24,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.25) internal successors, (649), 4 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:57:24,741 INFO L276 IsEmpty]: Start isEmpty. Operand 329512 states and 380492 transitions. [2023-12-19 04:57:24,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1054 [2023-12-19 04:57:24,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:57:24,754 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:57:24,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 04:57:24,754 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:57:24,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:57:24,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1824270536, now seen corresponding path program 1 times [2023-12-19 04:57:24,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:57:24,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586836393] [2023-12-19 04:57:24,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:57:24,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:57:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:57:25,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1050 backedges. 654 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2023-12-19 04:57:25,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:57:25,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586836393] [2023-12-19 04:57:25,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586836393] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:57:25,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:57:25,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:57:25,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135418500] [2023-12-19 04:57:25,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:57:25,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:57:25,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:57:25,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:57:25,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:57:25,738 INFO L87 Difference]: Start difference. First operand 329512 states and 380492 transitions. Second operand has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:57:33,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:57:33,647 INFO L93 Difference]: Finished difference Result 665855 states and 768056 transitions. [2023-12-19 04:57:33,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:57:33,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 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 1053 [2023-12-19 04:57:33,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:57:34,362 INFO L225 Difference]: With dead ends: 665855 [2023-12-19 04:57:34,363 INFO L226 Difference]: Without dead ends: 339074 [2023-12-19 04:57:34,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:57:34,556 INFO L413 NwaCegarLoop]: 2852 mSDtfsCounter, 1368 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 3656 mSolverCounterSat, 1462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 3015 SdHoareTripleChecker+Invalid, 5118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1462 IncrementalHoareTripleChecker+Valid, 3656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:57:34,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1368 Valid, 3015 Invalid, 5118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1462 Valid, 3656 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-19 04:57:35,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339074 states. [2023-12-19 04:57:39,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339074 to 333605. [2023-12-19 04:57:39,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333605 states, 333604 states have (on average 1.1226514070574694) internal successors, (374521), 333604 states have internal predecessors, (374521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:57:40,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333605 states to 333605 states and 374521 transitions. [2023-12-19 04:57:40,566 INFO L78 Accepts]: Start accepts. Automaton has 333605 states and 374521 transitions. Word has length 1053 [2023-12-19 04:57:40,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:57:40,567 INFO L495 AbstractCegarLoop]: Abstraction has 333605 states and 374521 transitions. [2023-12-19 04:57:40,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:57:40,567 INFO L276 IsEmpty]: Start isEmpty. Operand 333605 states and 374521 transitions. [2023-12-19 04:57:40,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2023-12-19 04:57:40,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:57:40,579 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:57:40,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 04:57:40,580 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:57:40,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:57:40,580 INFO L85 PathProgramCache]: Analyzing trace with hash 975270345, now seen corresponding path program 1 times [2023-12-19 04:57:40,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:57:40,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142418837] [2023-12-19 04:57:40,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:57:40,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:57:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:57:44,040 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 62 proven. 485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:57:44,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:57:44,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142418837] [2023-12-19 04:57:44,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142418837] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:57:44,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271095967] [2023-12-19 04:57:44,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:57:44,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:57:44,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:57:44,057 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 04:57:44,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 04:57:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:57:44,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 1217 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 04:57:44,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:57:44,429 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2023-12-19 04:57:44,429 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:57:44,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271095967] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:57:44,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:57:44,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-19 04:57:44,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599373767] [2023-12-19 04:57:44,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:57:44,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:57:44,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:57:44,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:57:44,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-19 04:57:44,432 INFO L87 Difference]: Start difference. First operand 333605 states and 374521 transitions. Second operand has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:57:53,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:57:53,665 INFO L93 Difference]: Finished difference Result 773768 states and 869969 transitions. [2023-12-19 04:57:53,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:57:53,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 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 1100 [2023-12-19 04:57:53,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:57:54,472 INFO L225 Difference]: With dead ends: 773768 [2023-12-19 04:57:54,472 INFO L226 Difference]: Without dead ends: 442894 [2023-12-19 04:57:54,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1105 GetRequests, 1099 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-19 04:57:54,609 INFO L413 NwaCegarLoop]: 1477 mSDtfsCounter, 1527 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 4241 mSolverCounterSat, 1580 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1527 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 5821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1580 IncrementalHoareTripleChecker+Valid, 4241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:57:54,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1527 Valid, 1593 Invalid, 5821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1580 Valid, 4241 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-19 04:57:55,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442894 states. [2023-12-19 04:57:59,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442894 to 434613. [2023-12-19 04:57:59,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434613 states, 434612 states have (on average 1.1164832080108233) internal successors, (485237), 434612 states have internal predecessors, (485237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:58:00,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434613 states to 434613 states and 485237 transitions. [2023-12-19 04:58:00,870 INFO L78 Accepts]: Start accepts. Automaton has 434613 states and 485237 transitions. Word has length 1100 [2023-12-19 04:58:00,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:58:00,871 INFO L495 AbstractCegarLoop]: Abstraction has 434613 states and 485237 transitions. [2023-12-19 04:58:00,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:58:00,871 INFO L276 IsEmpty]: Start isEmpty. Operand 434613 states and 485237 transitions. [2023-12-19 04:58:00,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1365 [2023-12-19 04:58:00,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:58:00,905 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:58:00,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-19 04:58:01,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:58:01,111 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:58:01,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:58:01,112 INFO L85 PathProgramCache]: Analyzing trace with hash -664064310, now seen corresponding path program 1 times [2023-12-19 04:58:01,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:58:01,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186500912] [2023-12-19 04:58:01,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:58:01,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:58:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:58:04,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1966 backedges. 1218 proven. 218 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2023-12-19 04:58:04,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:58:04,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186500912] [2023-12-19 04:58:04,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186500912] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:58:04,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931795902] [2023-12-19 04:58:04,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:58:04,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:58:04,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:58:04,074 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 04:58:04,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 04:58:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:58:04,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 1550 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 04:58:04,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:58:04,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1966 backedges. 1566 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2023-12-19 04:58:04,747 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:58:04,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931795902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:58:04,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:58:04,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-19 04:58:04,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897462190] [2023-12-19 04:58:04,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:58:04,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:58:04,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:58:04,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:58:04,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 04:58:04,750 INFO L87 Difference]: Start difference. First operand 434613 states and 485237 transitions. Second operand has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:58:13,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:58:13,169 INFO L93 Difference]: Finished difference Result 960679 states and 1072963 transitions. [2023-12-19 04:58:13,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:58:13,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 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 1364 [2023-12-19 04:58:13,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:58:14,364 INFO L225 Difference]: With dead ends: 960679 [2023-12-19 04:58:14,364 INFO L226 Difference]: Without dead ends: 526066 [2023-12-19 04:58:14,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1369 GetRequests, 1363 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 04:58:14,526 INFO L413 NwaCegarLoop]: 2521 mSDtfsCounter, 1432 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 3772 mSolverCounterSat, 1600 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1432 SdHoareTripleChecker+Valid, 2595 SdHoareTripleChecker+Invalid, 5372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1600 IncrementalHoareTripleChecker+Valid, 3772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:58:14,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1432 Valid, 2595 Invalid, 5372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1600 Valid, 3772 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-19 04:58:15,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526066 states. [2023-12-19 04:58:20,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526066 to 505586. [2023-12-19 04:58:20,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505586 states, 505585 states have (on average 1.1034247455917403) internal successors, (557875), 505585 states have internal predecessors, (557875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:58:22,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505586 states to 505586 states and 557875 transitions. [2023-12-19 04:58:22,192 INFO L78 Accepts]: Start accepts. Automaton has 505586 states and 557875 transitions. Word has length 1364 [2023-12-19 04:58:22,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:58:22,193 INFO L495 AbstractCegarLoop]: Abstraction has 505586 states and 557875 transitions. [2023-12-19 04:58:22,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:58:22,194 INFO L276 IsEmpty]: Start isEmpty. Operand 505586 states and 557875 transitions. [2023-12-19 04:58:22,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1402 [2023-12-19 04:58:22,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:58:22,221 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:58:22,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 04:58:22,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 04:58:22,430 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:58:22,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:58:22,431 INFO L85 PathProgramCache]: Analyzing trace with hash 851527249, now seen corresponding path program 1 times [2023-12-19 04:58:22,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:58:22,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574460168] [2023-12-19 04:58:22,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:58:22,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:58:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:58:24,721 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 267 proven. 658 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:58:24,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:58:24,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574460168] [2023-12-19 04:58:24,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574460168] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:58:24,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99063199] [2023-12-19 04:58:24,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:58:24,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:58:24,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:58:24,735 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 04:58:24,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 04:58:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:58:25,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 1547 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 04:58:25,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:58:25,356 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2023-12-19 04:58:25,356 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:58:25,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99063199] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:58:25,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:58:25,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-19 04:58:25,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632622028] [2023-12-19 04:58:25,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:58:25,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:58:25,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:58:25,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:58:25,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:58:25,358 INFO L87 Difference]: Start difference. First operand 505586 states and 557875 transitions. Second operand has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)