/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 06:04:15,400 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 06:04:15,469 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 06:04:15,473 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 06:04:15,474 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 06:04:15,496 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 06:04:15,496 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 06:04:15,497 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 06:04:15,497 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 06:04:15,500 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 06:04:15,500 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 06:04:15,500 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 06:04:15,501 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 06:04:15,501 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 06:04:15,502 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 06:04:15,502 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 06:04:15,502 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 06:04:15,502 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 06:04:15,502 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 06:04:15,503 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 06:04:15,503 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 06:04:15,504 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 06:04:15,504 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 06:04:15,504 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 06:04:15,504 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 06:04:15,504 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 06:04:15,504 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 06:04:15,505 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 06:04:15,505 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 06:04:15,505 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 06:04:15,506 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 06:04:15,506 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 06:04:15,506 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:04:15,506 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 06:04:15,506 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 06:04:15,506 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 06:04:15,506 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 06:04:15,507 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 06:04:15,507 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 06:04:15,507 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 06:04:15,507 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 06:04:15,507 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 06:04:15,507 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 06:04:15,507 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 06:04:15,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 06:04:15,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 06:04:15,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 06:04:15,705 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 06:04:15,706 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 06:04:15,706 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c [2023-12-16 06:04:16,773 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 06:04:17,001 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 06:04:17,002 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c [2023-12-16 06:04:17,010 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/056db22ca/42581f2107c14a95a918db92107648c9/FLAG7d60f2c2a [2023-12-16 06:04:17,358 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/056db22ca/42581f2107c14a95a918db92107648c9 [2023-12-16 06:04:17,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 06:04:17,361 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 06:04:17,362 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 06:04:17,362 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 06:04:17,367 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 06:04:17,368 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:04:17" (1/1) ... [2023-12-16 06:04:17,369 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@191566fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:04:17, skipping insertion in model container [2023-12-16 06:04:17,369 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:04:17" (1/1) ... [2023-12-16 06:04:17,410 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 06:04:17,610 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c[16964,16977] [2023-12-16 06:04:17,618 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:04:17,626 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 06:04:17,683 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c[16964,16977] [2023-12-16 06:04:17,683 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:04:17,695 INFO L206 MainTranslator]: Completed translation [2023-12-16 06:04:17,695 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:04:17 WrapperNode [2023-12-16 06:04:17,695 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 06:04:17,696 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 06:04:17,696 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 06:04:17,696 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 06:04:17,702 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:04:17" (1/1) ... [2023-12-16 06:04:17,710 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:04:17" (1/1) ... [2023-12-16 06:04:17,743 INFO L138 Inliner]: procedures = 26, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 441 [2023-12-16 06:04:17,743 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 06:04:17,744 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 06:04:17,744 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 06:04:17,744 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 06:04:17,759 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:04:17" (1/1) ... [2023-12-16 06:04:17,759 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:04:17" (1/1) ... [2023-12-16 06:04:17,762 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:04:17" (1/1) ... [2023-12-16 06:04:17,793 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]. [2023-12-16 06:04:17,794 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:04:17" (1/1) ... [2023-12-16 06:04:17,794 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:04:17" (1/1) ... [2023-12-16 06:04:17,800 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:04:17" (1/1) ... [2023-12-16 06:04:17,814 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:04:17" (1/1) ... [2023-12-16 06:04:17,816 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:04:17" (1/1) ... [2023-12-16 06:04:17,822 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:04:17" (1/1) ... [2023-12-16 06:04:17,824 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 06:04:17,825 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 06:04:17,825 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 06:04:17,825 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 06:04:17,826 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:04:17" (1/1) ... [2023-12-16 06:04:17,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:04:17,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:04:17,884 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) [2023-12-16 06:04:17,917 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 [2023-12-16 06:04:17,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 06:04:17,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 06:04:17,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 06:04:17,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 06:04:18,017 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 06:04:18,019 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 06:04:18,462 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 06:04:18,526 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 06:04:18,526 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 06:04:18,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:04:18 BoogieIcfgContainer [2023-12-16 06:04:18,527 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 06:04:18,528 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 06:04:18,528 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 06:04:18,531 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 06:04:18,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:04:17" (1/3) ... [2023-12-16 06:04:18,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@655c1446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:04:18, skipping insertion in model container [2023-12-16 06:04:18,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:04:17" (2/3) ... [2023-12-16 06:04:18,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@655c1446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:04:18, skipping insertion in model container [2023-12-16 06:04:18,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:04:18" (3/3) ... [2023-12-16 06:04:18,533 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c [2023-12-16 06:04:18,545 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 06:04:18,545 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 06:04:18,580 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 06:04:18,585 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;@76935c2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 06:04:18,585 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 06:04:18,588 INFO L276 IsEmpty]: Start isEmpty. Operand has 118 states, 116 states have (on average 1.793103448275862) internal successors, (208), 117 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:18,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 06:04:18,593 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:04:18,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:04:18,594 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:04:18,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:04:18,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1104781184, now seen corresponding path program 1 times [2023-12-16 06:04:18,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:04:18,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143596353] [2023-12-16 06:04:18,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:18,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:04:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:18,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:04:18,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:04:18,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143596353] [2023-12-16 06:04:18,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143596353] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:04:18,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:04:18,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:04:18,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696301446] [2023-12-16 06:04:18,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:04:18,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:04:18,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:04:18,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:04:18,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:04:18,986 INFO L87 Difference]: Start difference. First operand has 118 states, 116 states have (on average 1.793103448275862) internal successors, (208), 117 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:19,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:04:19,088 INFO L93 Difference]: Finished difference Result 192 states and 332 transitions. [2023-12-16 06:04:19,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:04:19,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-12-16 06:04:19,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:04:19,098 INFO L225 Difference]: With dead ends: 192 [2023-12-16 06:04:19,098 INFO L226 Difference]: Without dead ends: 116 [2023-12-16 06:04:19,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:04:19,105 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 0 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:04:19,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 556 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:04:19,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-12-16 06:04:19,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2023-12-16 06:04:19,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.4086956521739131) internal successors, (162), 115 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:19,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 162 transitions. [2023-12-16 06:04:19,137 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 162 transitions. Word has length 34 [2023-12-16 06:04:19,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:04:19,138 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 162 transitions. [2023-12-16 06:04:19,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:19,138 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 162 transitions. [2023-12-16 06:04:19,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 06:04:19,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:04:19,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:04:19,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 06:04:19,140 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:04:19,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:04:19,141 INFO L85 PathProgramCache]: Analyzing trace with hash 793023434, now seen corresponding path program 1 times [2023-12-16 06:04:19,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:04:19,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161450642] [2023-12-16 06:04:19,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:19,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:04:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:19,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:04:19,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:04:19,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161450642] [2023-12-16 06:04:19,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161450642] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:04:19,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:04:19,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:04:19,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971399239] [2023-12-16 06:04:19,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:04:19,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:04:19,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:04:19,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:04:19,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:04:19,224 INFO L87 Difference]: Start difference. First operand 116 states and 162 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:19,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:04:19,244 INFO L93 Difference]: Finished difference Result 250 states and 382 transitions. [2023-12-16 06:04:19,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:04:19,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-16 06:04:19,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:04:19,246 INFO L225 Difference]: With dead ends: 250 [2023-12-16 06:04:19,246 INFO L226 Difference]: Without dead ends: 179 [2023-12-16 06:04:19,247 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 [2023-12-16 06:04:19,248 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 101 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:04:19,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 354 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:04:19,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-12-16 06:04:19,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2023-12-16 06:04:19,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.4943181818181819) internal successors, (263), 176 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:19,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 263 transitions. [2023-12-16 06:04:19,259 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 263 transitions. Word has length 74 [2023-12-16 06:04:19,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:04:19,259 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 263 transitions. [2023-12-16 06:04:19,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:19,259 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 263 transitions. [2023-12-16 06:04:19,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 06:04:19,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:04:19,261 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:04:19,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 06:04:19,261 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:04:19,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:04:19,261 INFO L85 PathProgramCache]: Analyzing trace with hash 706247657, now seen corresponding path program 1 times [2023-12-16 06:04:19,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:04:19,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680859449] [2023-12-16 06:04:19,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:19,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:04:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:19,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:04:19,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:04:19,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680859449] [2023-12-16 06:04:19,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680859449] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:04:19,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:04:19,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:04:19,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013958555] [2023-12-16 06:04:19,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:04:19,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:04:19,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:04:19,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:04:19,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:04:19,369 INFO L87 Difference]: Start difference. First operand 177 states and 263 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:19,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:04:19,398 INFO L93 Difference]: Finished difference Result 425 states and 671 transitions. [2023-12-16 06:04:19,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:04:19,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-16 06:04:19,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:04:19,400 INFO L225 Difference]: With dead ends: 425 [2023-12-16 06:04:19,400 INFO L226 Difference]: Without dead ends: 293 [2023-12-16 06:04:19,401 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 [2023-12-16 06:04:19,402 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 89 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:04:19,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 325 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:04:19,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-12-16 06:04:19,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 291. [2023-12-16 06:04:19,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 1.5517241379310345) internal successors, (450), 290 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:19,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 450 transitions. [2023-12-16 06:04:19,417 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 450 transitions. Word has length 74 [2023-12-16 06:04:19,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:04:19,418 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 450 transitions. [2023-12-16 06:04:19,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:19,418 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 450 transitions. [2023-12-16 06:04:19,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 06:04:19,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:04:19,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:04:19,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 06:04:19,420 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:04:19,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:04:19,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1617451656, now seen corresponding path program 1 times [2023-12-16 06:04:19,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:04:19,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290343796] [2023-12-16 06:04:19,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:19,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:04:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:19,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:04:19,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:04:19,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290343796] [2023-12-16 06:04:19,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290343796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:04:19,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:04:19,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:04:19,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135479633] [2023-12-16 06:04:19,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:04:19,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:04:19,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:04:19,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:04:19,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:04:19,554 INFO L87 Difference]: Start difference. First operand 291 states and 450 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:19,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:04:19,577 INFO L93 Difference]: Finished difference Result 751 states and 1204 transitions. [2023-12-16 06:04:19,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:04:19,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-16 06:04:19,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:04:19,581 INFO L225 Difference]: With dead ends: 751 [2023-12-16 06:04:19,582 INFO L226 Difference]: Without dead ends: 505 [2023-12-16 06:04:19,582 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 [2023-12-16 06:04:19,583 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 85 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:04:19,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 322 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:04:19,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2023-12-16 06:04:19,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 503. [2023-12-16 06:04:19,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 502 states have (on average 1.5816733067729083) internal successors, (794), 502 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:19,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 794 transitions. [2023-12-16 06:04:19,600 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 794 transitions. Word has length 74 [2023-12-16 06:04:19,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:04:19,601 INFO L495 AbstractCegarLoop]: Abstraction has 503 states and 794 transitions. [2023-12-16 06:04:19,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:19,601 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 794 transitions. [2023-12-16 06:04:19,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 06:04:19,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:04:19,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:04:19,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 06:04:19,602 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:04:19,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:04:19,603 INFO L85 PathProgramCache]: Analyzing trace with hash 2004246695, now seen corresponding path program 1 times [2023-12-16 06:04:19,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:04:19,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016834440] [2023-12-16 06:04:19,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:19,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:04:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:19,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:04:19,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:04:19,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016834440] [2023-12-16 06:04:19,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016834440] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:04:19,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:04:19,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 06:04:19,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905584981] [2023-12-16 06:04:19,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:04:19,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 06:04:19,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:04:19,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 06:04:19,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:04:19,770 INFO L87 Difference]: Start difference. First operand 503 states and 794 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:19,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:04:19,964 INFO L93 Difference]: Finished difference Result 3709 states and 6037 transitions. [2023-12-16 06:04:19,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 06:04:19,965 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-16 06:04:19,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:04:19,978 INFO L225 Difference]: With dead ends: 3709 [2023-12-16 06:04:19,978 INFO L226 Difference]: Without dead ends: 3251 [2023-12-16 06:04:19,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-12-16 06:04:19,987 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 1681 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1681 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:04:19,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1681 Valid, 1409 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:04:19,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3251 states. [2023-12-16 06:04:20,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3251 to 959. [2023-12-16 06:04:20,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 958 states have (on average 1.592901878914405) internal successors, (1526), 958 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:20,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1526 transitions. [2023-12-16 06:04:20,041 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1526 transitions. Word has length 74 [2023-12-16 06:04:20,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:04:20,042 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 1526 transitions. [2023-12-16 06:04:20,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:20,042 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1526 transitions. [2023-12-16 06:04:20,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 06:04:20,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:04:20,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:04:20,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 06:04:20,044 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:04:20,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:04:20,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1989045912, now seen corresponding path program 1 times [2023-12-16 06:04:20,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:04:20,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856979656] [2023-12-16 06:04:20,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:20,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:04:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:20,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:04:20,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:04:20,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856979656] [2023-12-16 06:04:20,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856979656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:04:20,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:04:20,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:04:20,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272852372] [2023-12-16 06:04:20,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:04:20,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:04:20,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:04:20,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:04:20,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:04:20,321 INFO L87 Difference]: Start difference. First operand 959 states and 1526 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:20,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:04:20,364 INFO L93 Difference]: Finished difference Result 1009 states and 1591 transitions. [2023-12-16 06:04:20,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:04:20,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-16 06:04:20,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:04:20,367 INFO L225 Difference]: With dead ends: 1009 [2023-12-16 06:04:20,368 INFO L226 Difference]: Without dead ends: 1007 [2023-12-16 06:04:20,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:04:20,373 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 1 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:04:20,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 467 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:04:20,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2023-12-16 06:04:20,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 991. [2023-12-16 06:04:20,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 990 states have (on average 1.5737373737373737) internal successors, (1558), 990 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:20,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1558 transitions. [2023-12-16 06:04:20,412 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1558 transitions. Word has length 75 [2023-12-16 06:04:20,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:04:20,414 INFO L495 AbstractCegarLoop]: Abstraction has 991 states and 1558 transitions. [2023-12-16 06:04:20,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:20,414 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1558 transitions. [2023-12-16 06:04:20,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-16 06:04:20,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:04:20,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:04:20,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 06:04:20,418 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:04:20,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:04:20,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1531882991, now seen corresponding path program 1 times [2023-12-16 06:04:20,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:04:20,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130557247] [2023-12-16 06:04:20,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:20,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:04:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:20,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:04:20,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:04:20,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130557247] [2023-12-16 06:04:20,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130557247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:04:20,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:04:20,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:04:20,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918173633] [2023-12-16 06:04:20,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:04:20,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:04:20,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:04:20,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:04:20,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:04:20,528 INFO L87 Difference]: Start difference. First operand 991 states and 1558 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:20,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:04:20,573 INFO L93 Difference]: Finished difference Result 2771 states and 4392 transitions. [2023-12-16 06:04:20,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:04:20,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-16 06:04:20,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:04:20,579 INFO L225 Difference]: With dead ends: 2771 [2023-12-16 06:04:20,579 INFO L226 Difference]: Without dead ends: 1825 [2023-12-16 06:04:20,580 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 [2023-12-16 06:04:20,583 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 77 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:04:20,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 267 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:04:20,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1825 states. [2023-12-16 06:04:20,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1825 to 1807. [2023-12-16 06:04:20,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1807 states, 1806 states have (on average 1.566998892580288) internal successors, (2830), 1806 states have internal predecessors, (2830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:20,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 2830 transitions. [2023-12-16 06:04:20,639 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 2830 transitions. Word has length 76 [2023-12-16 06:04:20,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:04:20,639 INFO L495 AbstractCegarLoop]: Abstraction has 1807 states and 2830 transitions. [2023-12-16 06:04:20,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:20,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 2830 transitions. [2023-12-16 06:04:20,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-16 06:04:20,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:04:20,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:04:20,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 06:04:20,642 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:04:20,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:04:20,643 INFO L85 PathProgramCache]: Analyzing trace with hash -446375905, now seen corresponding path program 1 times [2023-12-16 06:04:20,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:04:20,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854704829] [2023-12-16 06:04:20,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:20,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:04:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:20,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:04:20,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:04:20,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854704829] [2023-12-16 06:04:20,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854704829] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:04:20,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:04:20,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:04:20,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070404075] [2023-12-16 06:04:20,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:04:20,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:04:20,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:04:20,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:04:20,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:04:20,710 INFO L87 Difference]: Start difference. First operand 1807 states and 2830 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:20,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:04:20,769 INFO L93 Difference]: Finished difference Result 5075 states and 7952 transitions. [2023-12-16 06:04:20,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:04:20,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-16 06:04:20,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:04:20,780 INFO L225 Difference]: With dead ends: 5075 [2023-12-16 06:04:20,780 INFO L226 Difference]: Without dead ends: 3313 [2023-12-16 06:04:20,784 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 [2023-12-16 06:04:20,785 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 93 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:04:20,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 339 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:04:20,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3313 states. [2023-12-16 06:04:20,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3313 to 3311. [2023-12-16 06:04:20,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3311 states, 3310 states have (on average 1.5510574018126888) internal successors, (5134), 3310 states have internal predecessors, (5134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:20,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3311 states to 3311 states and 5134 transitions. [2023-12-16 06:04:20,889 INFO L78 Accepts]: Start accepts. Automaton has 3311 states and 5134 transitions. Word has length 77 [2023-12-16 06:04:20,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:04:20,890 INFO L495 AbstractCegarLoop]: Abstraction has 3311 states and 5134 transitions. [2023-12-16 06:04:20,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:20,890 INFO L276 IsEmpty]: Start isEmpty. Operand 3311 states and 5134 transitions. [2023-12-16 06:04:20,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-16 06:04:20,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:04:20,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:04:20,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 06:04:20,893 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:04:20,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:04:20,893 INFO L85 PathProgramCache]: Analyzing trace with hash 925708607, now seen corresponding path program 1 times [2023-12-16 06:04:20,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:04:20,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270832077] [2023-12-16 06:04:20,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:20,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:04:20,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:20,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:04:20,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:04:20,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270832077] [2023-12-16 06:04:20,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270832077] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:04:20,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:04:20,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:04:20,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930798879] [2023-12-16 06:04:20,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:04:20,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:04:20,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:04:20,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:04:20,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:04:20,949 INFO L87 Difference]: Start difference. First operand 3311 states and 5134 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:21,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:04:21,038 INFO L93 Difference]: Finished difference Result 9331 states and 14416 transitions. [2023-12-16 06:04:21,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:04:21,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-16 06:04:21,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:04:21,052 INFO L225 Difference]: With dead ends: 9331 [2023-12-16 06:04:21,053 INFO L226 Difference]: Without dead ends: 6065 [2023-12-16 06:04:21,059 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 [2023-12-16 06:04:21,060 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 97 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:04:21,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 352 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:04:21,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6065 states. [2023-12-16 06:04:21,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6065 to 6063. [2023-12-16 06:04:21,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6063 states, 6062 states have (on average 1.5278785879247774) internal successors, (9262), 6062 states have internal predecessors, (9262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:21,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6063 states to 6063 states and 9262 transitions. [2023-12-16 06:04:21,197 INFO L78 Accepts]: Start accepts. Automaton has 6063 states and 9262 transitions. Word has length 77 [2023-12-16 06:04:21,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:04:21,197 INFO L495 AbstractCegarLoop]: Abstraction has 6063 states and 9262 transitions. [2023-12-16 06:04:21,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:21,197 INFO L276 IsEmpty]: Start isEmpty. Operand 6063 states and 9262 transitions. [2023-12-16 06:04:21,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-16 06:04:21,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:04:21,198 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:04:21,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 06:04:21,198 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:04:21,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:04:21,198 INFO L85 PathProgramCache]: Analyzing trace with hash 537132629, now seen corresponding path program 1 times [2023-12-16 06:04:21,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:04:21,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934504326] [2023-12-16 06:04:21,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:21,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:04:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:21,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:04:21,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:04:21,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934504326] [2023-12-16 06:04:21,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934504326] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:04:21,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:04:21,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:04:21,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897381540] [2023-12-16 06:04:21,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:04:21,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:04:21,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:04:21,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:04:21,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:04:21,237 INFO L87 Difference]: Start difference. First operand 6063 states and 9262 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:21,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:04:21,398 INFO L93 Difference]: Finished difference Result 11958 states and 18356 transitions. [2023-12-16 06:04:21,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:04:21,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-16 06:04:21,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:04:21,435 INFO L225 Difference]: With dead ends: 11958 [2023-12-16 06:04:21,435 INFO L226 Difference]: Without dead ends: 8691 [2023-12-16 06:04:21,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:04:21,439 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 102 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:04:21,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 364 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:04:21,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8691 states. [2023-12-16 06:04:21,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8691 to 8689. [2023-12-16 06:04:21,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8689 states, 8688 states have (on average 1.5193370165745856) internal successors, (13200), 8688 states have internal predecessors, (13200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:21,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8689 states to 8689 states and 13200 transitions. [2023-12-16 06:04:21,648 INFO L78 Accepts]: Start accepts. Automaton has 8689 states and 13200 transitions. Word has length 78 [2023-12-16 06:04:21,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:04:21,648 INFO L495 AbstractCegarLoop]: Abstraction has 8689 states and 13200 transitions. [2023-12-16 06:04:21,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:21,648 INFO L276 IsEmpty]: Start isEmpty. Operand 8689 states and 13200 transitions. [2023-12-16 06:04:21,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-16 06:04:21,652 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:04:21,652 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:04:21,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 06:04:21,652 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:04:21,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:04:21,653 INFO L85 PathProgramCache]: Analyzing trace with hash 2110410325, now seen corresponding path program 1 times [2023-12-16 06:04:21,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:04:21,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957584306] [2023-12-16 06:04:21,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:21,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:04:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:21,808 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 06:04:21,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:04:21,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957584306] [2023-12-16 06:04:21,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957584306] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:04:21,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:04:21,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 06:04:21,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952628046] [2023-12-16 06:04:21,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:04:21,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 06:04:21,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:04:21,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 06:04:21,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:04:21,809 INFO L87 Difference]: Start difference. First operand 8689 states and 13200 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:22,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:04:22,370 INFO L93 Difference]: Finished difference Result 33343 states and 51207 transitions. [2023-12-16 06:04:22,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 06:04:22,371 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-12-16 06:04:22,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:04:22,414 INFO L225 Difference]: With dead ends: 33343 [2023-12-16 06:04:22,415 INFO L226 Difference]: Without dead ends: 28989 [2023-12-16 06:04:22,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-16 06:04:22,424 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 1467 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:04:22,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 1344 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:04:22,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28989 states. [2023-12-16 06:04:22,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28989 to 12977. [2023-12-16 06:04:22,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12977 states, 12976 states have (on average 1.5191122071516645) internal successors, (19712), 12976 states have internal predecessors, (19712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:22,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12977 states to 12977 states and 19712 transitions. [2023-12-16 06:04:22,853 INFO L78 Accepts]: Start accepts. Automaton has 12977 states and 19712 transitions. Word has length 107 [2023-12-16 06:04:22,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:04:22,853 INFO L495 AbstractCegarLoop]: Abstraction has 12977 states and 19712 transitions. [2023-12-16 06:04:22,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:22,854 INFO L276 IsEmpty]: Start isEmpty. Operand 12977 states and 19712 transitions. [2023-12-16 06:04:22,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-16 06:04:22,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:04:22,858 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:04:22,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 06:04:22,858 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:04:22,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:04:22,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1034416659, now seen corresponding path program 1 times [2023-12-16 06:04:22,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:04:22,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797432222] [2023-12-16 06:04:22,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:22,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:04:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:23,040 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-16 06:04:23,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:04:23,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797432222] [2023-12-16 06:04:23,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797432222] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:04:23,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:04:23,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 06:04:23,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304342034] [2023-12-16 06:04:23,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:04:23,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 06:04:23,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:04:23,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 06:04:23,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:04:23,042 INFO L87 Difference]: Start difference. First operand 12977 states and 19712 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:23,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:04:23,677 INFO L93 Difference]: Finished difference Result 37631 states and 57719 transitions. [2023-12-16 06:04:23,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 06:04:23,677 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-12-16 06:04:23,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:04:23,735 INFO L225 Difference]: With dead ends: 37631 [2023-12-16 06:04:23,735 INFO L226 Difference]: Without dead ends: 33277 [2023-12-16 06:04:23,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-16 06:04:23,752 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 1564 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 1358 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:04:23,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1564 Valid, 1358 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:04:23,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33277 states. [2023-12-16 06:04:24,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33277 to 17265. [2023-12-16 06:04:24,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17265 states, 17264 states have (on average 1.5189990732159406) internal successors, (26224), 17264 states have internal predecessors, (26224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:24,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17265 states to 17265 states and 26224 transitions. [2023-12-16 06:04:24,311 INFO L78 Accepts]: Start accepts. Automaton has 17265 states and 26224 transitions. Word has length 107 [2023-12-16 06:04:24,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:04:24,311 INFO L495 AbstractCegarLoop]: Abstraction has 17265 states and 26224 transitions. [2023-12-16 06:04:24,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:24,311 INFO L276 IsEmpty]: Start isEmpty. Operand 17265 states and 26224 transitions. [2023-12-16 06:04:24,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-16 06:04:24,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:04:24,316 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:04:24,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 06:04:24,316 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:04:24,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:04:24,316 INFO L85 PathProgramCache]: Analyzing trace with hash 409916945, now seen corresponding path program 1 times [2023-12-16 06:04:24,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:04:24,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611134068] [2023-12-16 06:04:24,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:24,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:04:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:24,512 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-16 06:04:24,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:04:24,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611134068] [2023-12-16 06:04:24,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611134068] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:04:24,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:04:24,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 06:04:24,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040641240] [2023-12-16 06:04:24,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:04:24,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 06:04:24,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:04:24,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 06:04:24,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:04:24,514 INFO L87 Difference]: Start difference. First operand 17265 states and 26224 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:25,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:04:25,182 INFO L93 Difference]: Finished difference Result 41919 states and 64231 transitions. [2023-12-16 06:04:25,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 06:04:25,182 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-12-16 06:04:25,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:04:25,236 INFO L225 Difference]: With dead ends: 41919 [2023-12-16 06:04:25,236 INFO L226 Difference]: Without dead ends: 37565 [2023-12-16 06:04:25,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-16 06:04:25,246 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 1441 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:04:25,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1441 Valid, 1382 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:04:25,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37565 states. [2023-12-16 06:04:25,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37565 to 21553. [2023-12-16 06:04:25,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21553 states, 21552 states have (on average 1.5189309576837418) internal successors, (32736), 21552 states have internal predecessors, (32736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:25,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21553 states to 21553 states and 32736 transitions. [2023-12-16 06:04:25,809 INFO L78 Accepts]: Start accepts. Automaton has 21553 states and 32736 transitions. Word has length 107 [2023-12-16 06:04:25,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:04:25,809 INFO L495 AbstractCegarLoop]: Abstraction has 21553 states and 32736 transitions. [2023-12-16 06:04:25,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:25,810 INFO L276 IsEmpty]: Start isEmpty. Operand 21553 states and 32736 transitions. [2023-12-16 06:04:25,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-16 06:04:25,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:04:25,817 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:04:25,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 06:04:25,817 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:04:25,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:04:25,818 INFO L85 PathProgramCache]: Analyzing trace with hash -59114348, now seen corresponding path program 1 times [2023-12-16 06:04:25,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:04:25,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497694307] [2023-12-16 06:04:25,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:25,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:04:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:25,963 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 06:04:25,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:04:25,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497694307] [2023-12-16 06:04:25,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497694307] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:04:25,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:04:25,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 06:04:25,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548233296] [2023-12-16 06:04:25,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:04:25,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 06:04:25,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:04:25,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 06:04:25,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:04:25,964 INFO L87 Difference]: Start difference. First operand 21553 states and 32736 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:26,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:04:26,686 INFO L93 Difference]: Finished difference Result 46207 states and 70743 transitions. [2023-12-16 06:04:26,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 06:04:26,686 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-12-16 06:04:26,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:04:26,750 INFO L225 Difference]: With dead ends: 46207 [2023-12-16 06:04:26,751 INFO L226 Difference]: Without dead ends: 41853 [2023-12-16 06:04:26,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-16 06:04:26,761 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 1276 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1276 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:04:26,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1276 Valid, 1534 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:04:26,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41853 states. [2023-12-16 06:04:27,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41853 to 25841. [2023-12-16 06:04:27,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25841 states, 25840 states have (on average 1.5188854489164088) internal successors, (39248), 25840 states have internal predecessors, (39248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:27,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25841 states to 25841 states and 39248 transitions. [2023-12-16 06:04:27,450 INFO L78 Accepts]: Start accepts. Automaton has 25841 states and 39248 transitions. Word has length 107 [2023-12-16 06:04:27,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:04:27,450 INFO L495 AbstractCegarLoop]: Abstraction has 25841 states and 39248 transitions. [2023-12-16 06:04:27,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:27,451 INFO L276 IsEmpty]: Start isEmpty. Operand 25841 states and 39248 transitions. [2023-12-16 06:04:27,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-16 06:04:27,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:04:27,461 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:04:27,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 06:04:27,462 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:04:27,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:04:27,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1312970164, now seen corresponding path program 1 times [2023-12-16 06:04:27,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:04:27,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324042174] [2023-12-16 06:04:27,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:27,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:04:27,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:27,680 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 06:04:27,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:04:27,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324042174] [2023-12-16 06:04:27,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324042174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:04:27,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:04:27,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 06:04:27,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414518682] [2023-12-16 06:04:27,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:04:27,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 06:04:27,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:04:27,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 06:04:27,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:04:27,681 INFO L87 Difference]: Start difference. First operand 25841 states and 39248 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:28,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:04:28,539 INFO L93 Difference]: Finished difference Result 50495 states and 77255 transitions. [2023-12-16 06:04:28,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 06:04:28,540 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-12-16 06:04:28,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:04:28,616 INFO L225 Difference]: With dead ends: 50495 [2023-12-16 06:04:28,616 INFO L226 Difference]: Without dead ends: 46141 [2023-12-16 06:04:28,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-16 06:04:28,628 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 1313 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1313 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:04:28,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1313 Valid, 1525 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:04:28,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46141 states. [2023-12-16 06:04:29,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46141 to 30129. [2023-12-16 06:04:29,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30129 states, 30128 states have (on average 1.5188528943175783) internal successors, (45760), 30128 states have internal predecessors, (45760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:29,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30129 states to 30129 states and 45760 transitions. [2023-12-16 06:04:29,330 INFO L78 Accepts]: Start accepts. Automaton has 30129 states and 45760 transitions. Word has length 107 [2023-12-16 06:04:29,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:04:29,331 INFO L495 AbstractCegarLoop]: Abstraction has 30129 states and 45760 transitions. [2023-12-16 06:04:29,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:29,331 INFO L276 IsEmpty]: Start isEmpty. Operand 30129 states and 45760 transitions. [2023-12-16 06:04:29,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-16 06:04:29,493 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:04:29,493 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:04:29,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 06:04:29,494 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:04:29,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:04:29,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1733612164, now seen corresponding path program 1 times [2023-12-16 06:04:29,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:04:29,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090837867] [2023-12-16 06:04:29,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:29,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:04:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:29,566 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:04:29,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:04:29,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090837867] [2023-12-16 06:04:29,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090837867] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:04:29,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:04:29,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:04:29,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192428886] [2023-12-16 06:04:29,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:04:29,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:04:29,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:04:29,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:04:29,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:04:29,568 INFO L87 Difference]: Start difference. First operand 30129 states and 45760 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:30,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:04:30,130 INFO L93 Difference]: Finished difference Result 60213 states and 91474 transitions. [2023-12-16 06:04:30,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:04:30,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2023-12-16 06:04:30,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:04:30,169 INFO L225 Difference]: With dead ends: 60213 [2023-12-16 06:04:30,169 INFO L226 Difference]: Without dead ends: 30131 [2023-12-16 06:04:30,194 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 [2023-12-16 06:04:30,195 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 81 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:04:30,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 355 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:04:30,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30131 states. [2023-12-16 06:04:30,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30131 to 30129. [2023-12-16 06:04:30,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30129 states, 30128 states have (on average 1.507700477960701) internal successors, (45424), 30128 states have internal predecessors, (45424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:30,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30129 states to 30129 states and 45424 transitions. [2023-12-16 06:04:30,996 INFO L78 Accepts]: Start accepts. Automaton has 30129 states and 45424 transitions. Word has length 108 [2023-12-16 06:04:30,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:04:30,996 INFO L495 AbstractCegarLoop]: Abstraction has 30129 states and 45424 transitions. [2023-12-16 06:04:30,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:30,996 INFO L276 IsEmpty]: Start isEmpty. Operand 30129 states and 45424 transitions. [2023-12-16 06:04:31,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-16 06:04:31,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:04:31,032 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:04:31,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 06:04:31,033 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:04:31,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:04:31,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1162383707, now seen corresponding path program 1 times [2023-12-16 06:04:31,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:04:31,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65869146] [2023-12-16 06:04:31,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:31,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:04:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:31,132 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:04:31,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:04:31,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65869146] [2023-12-16 06:04:31,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65869146] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:04:31,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:04:31,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:04:31,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469246960] [2023-12-16 06:04:31,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:04:31,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:04:31,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:04:31,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:04:31,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:04:31,134 INFO L87 Difference]: Start difference. First operand 30129 states and 45424 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:31,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:04:31,470 INFO L93 Difference]: Finished difference Result 45173 states and 68114 transitions. [2023-12-16 06:04:31,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:04:31,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2023-12-16 06:04:31,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:04:31,486 INFO L225 Difference]: With dead ends: 45173 [2023-12-16 06:04:31,487 INFO L226 Difference]: Without dead ends: 15091 [2023-12-16 06:04:31,502 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 [2023-12-16 06:04:31,502 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 75 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:04:31,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 336 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:04:31,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15091 states. [2023-12-16 06:04:31,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15091 to 15089. [2023-12-16 06:04:31,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15089 states, 15088 states have (on average 1.4957582184517497) internal successors, (22568), 15088 states have internal predecessors, (22568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:31,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15089 states to 15089 states and 22568 transitions. [2023-12-16 06:04:31,899 INFO L78 Accepts]: Start accepts. Automaton has 15089 states and 22568 transitions. Word has length 108 [2023-12-16 06:04:31,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:04:31,899 INFO L495 AbstractCegarLoop]: Abstraction has 15089 states and 22568 transitions. [2023-12-16 06:04:31,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:31,899 INFO L276 IsEmpty]: Start isEmpty. Operand 15089 states and 22568 transitions. [2023-12-16 06:04:31,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-16 06:04:31,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:04:31,903 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:04:31,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 06:04:31,903 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:04:31,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:04:31,904 INFO L85 PathProgramCache]: Analyzing trace with hash 960971590, now seen corresponding path program 1 times [2023-12-16 06:04:31,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:04:31,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152108566] [2023-12-16 06:04:31,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:31,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:04:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:32,952 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:04:32,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:04:32,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152108566] [2023-12-16 06:04:32,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152108566] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:04:32,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780436968] [2023-12-16 06:04:32,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:32,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:04:32,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:04:32,981 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) [2023-12-16 06:04:32,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 06:04:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:33,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 06:04:33,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:04:33,242 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 06:04:33,242 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:04:33,397 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 06:04:33,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780436968] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:04:33,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:04:33,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 16 [2023-12-16 06:04:33,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947140612] [2023-12-16 06:04:33,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:04:33,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 06:04:33,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:04:33,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 06:04:33,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-12-16 06:04:33,398 INFO L87 Difference]: Start difference. First operand 15089 states and 22568 transitions. Second operand has 16 states, 16 states have (on average 19.5625) internal successors, (313), 16 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:38,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:04:38,710 INFO L93 Difference]: Finished difference Result 136503 states and 201615 transitions. [2023-12-16 06:04:38,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-16 06:04:38,715 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 19.5625) internal successors, (313), 16 states have internal predecessors, (313), 0 states have call successors, (0), 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 108 [2023-12-16 06:04:38,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:04:38,867 INFO L225 Difference]: With dead ends: 136503 [2023-12-16 06:04:38,867 INFO L226 Difference]: Without dead ends: 126197 [2023-12-16 06:04:38,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1930 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=927, Invalid=4925, Unknown=0, NotChecked=0, Total=5852 [2023-12-16 06:04:38,887 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 6864 mSDsluCounter, 1969 mSDsCounter, 0 mSdLazyCounter, 1789 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6864 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 1903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 06:04:38,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6864 Valid, 2200 Invalid, 1903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1789 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 06:04:38,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126197 states. [2023-12-16 06:04:41,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126197 to 95397. [2023-12-16 06:04:41,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95397 states, 95396 states have (on average 1.4740659985743636) internal successors, (140620), 95396 states have internal predecessors, (140620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:41,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95397 states to 95397 states and 140620 transitions. [2023-12-16 06:04:41,249 INFO L78 Accepts]: Start accepts. Automaton has 95397 states and 140620 transitions. Word has length 108 [2023-12-16 06:04:41,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:04:41,250 INFO L495 AbstractCegarLoop]: Abstraction has 95397 states and 140620 transitions. [2023-12-16 06:04:41,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.5625) internal successors, (313), 16 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:41,250 INFO L276 IsEmpty]: Start isEmpty. Operand 95397 states and 140620 transitions. [2023-12-16 06:04:41,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-16 06:04:41,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:04:41,254 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:04:41,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 06:04:41,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-16 06:04:41,460 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:04:41,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:04:41,460 INFO L85 PathProgramCache]: Analyzing trace with hash -94093581, now seen corresponding path program 1 times [2023-12-16 06:04:41,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:04:41,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749819288] [2023-12-16 06:04:41,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:41,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:04:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:41,590 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 06:04:41,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:04:41,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749819288] [2023-12-16 06:04:41,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749819288] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:04:41,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:04:41,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 06:04:41,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666806757] [2023-12-16 06:04:41,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:04:41,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 06:04:41,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:04:41,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 06:04:41,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:04:41,592 INFO L87 Difference]: Start difference. First operand 95397 states and 140620 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:44,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:04:44,473 INFO L93 Difference]: Finished difference Result 172727 states and 256053 transitions. [2023-12-16 06:04:44,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 06:04:44,474 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2023-12-16 06:04:44,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:04:44,702 INFO L225 Difference]: With dead ends: 172727 [2023-12-16 06:04:44,703 INFO L226 Difference]: Without dead ends: 161637 [2023-12-16 06:04:44,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-16 06:04:44,748 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 1167 mSDsluCounter, 1775 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 2065 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:04:44,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1167 Valid, 2065 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:04:44,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161637 states. [2023-12-16 06:04:47,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161637 to 107229. [2023-12-16 06:04:47,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107229 states, 107228 states have (on average 1.473439773193569) internal successors, (157994), 107228 states have internal predecessors, (157994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:47,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107229 states to 107229 states and 157994 transitions. [2023-12-16 06:04:47,719 INFO L78 Accepts]: Start accepts. Automaton has 107229 states and 157994 transitions. Word has length 109 [2023-12-16 06:04:47,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:04:47,719 INFO L495 AbstractCegarLoop]: Abstraction has 107229 states and 157994 transitions. [2023-12-16 06:04:47,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:47,719 INFO L276 IsEmpty]: Start isEmpty. Operand 107229 states and 157994 transitions. [2023-12-16 06:04:47,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-16 06:04:47,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:04:47,723 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:04:47,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 06:04:47,723 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:04:47,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:04:47,724 INFO L85 PathProgramCache]: Analyzing trace with hash -734798986, now seen corresponding path program 1 times [2023-12-16 06:04:47,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:04:47,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559131916] [2023-12-16 06:04:47,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:47,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:04:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:48,010 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:04:48,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:04:48,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559131916] [2023-12-16 06:04:48,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559131916] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:04:48,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:04:48,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:04:48,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827067379] [2023-12-16 06:04:48,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:04:48,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:04:48,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:04:48,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:04:48,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:04:48,013 INFO L87 Difference]: Start difference. First operand 107229 states and 157994 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:49,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:04:49,065 INFO L93 Difference]: Finished difference Result 149300 states and 219720 transitions. [2023-12-16 06:04:49,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:04:49,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2023-12-16 06:04:49,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:04:49,118 INFO L225 Difference]: With dead ends: 149300 [2023-12-16 06:04:49,118 INFO L226 Difference]: Without dead ends: 42118 [2023-12-16 06:04:49,161 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 [2023-12-16 06:04:49,162 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 63 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:04:49,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 326 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:04:49,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42118 states. [2023-12-16 06:04:50,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42118 to 42116. [2023-12-16 06:04:50,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42116 states, 42115 states have (on average 1.4532114448533777) internal successors, (61202), 42115 states have internal predecessors, (61202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:50,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42116 states to 42116 states and 61202 transitions. [2023-12-16 06:04:50,284 INFO L78 Accepts]: Start accepts. Automaton has 42116 states and 61202 transitions. Word has length 110 [2023-12-16 06:04:50,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:04:50,284 INFO L495 AbstractCegarLoop]: Abstraction has 42116 states and 61202 transitions. [2023-12-16 06:04:50,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:50,284 INFO L276 IsEmpty]: Start isEmpty. Operand 42116 states and 61202 transitions. [2023-12-16 06:04:50,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-16 06:04:50,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:04:50,302 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:04:50,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 06:04:50,302 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:04:50,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:04:50,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1351270500, now seen corresponding path program 1 times [2023-12-16 06:04:50,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:04:50,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807054485] [2023-12-16 06:04:50,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:50,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:04:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:50,583 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:04:50,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:04:50,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807054485] [2023-12-16 06:04:50,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807054485] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:04:50,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536632272] [2023-12-16 06:04:50,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:50,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:04:50,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:04:50,584 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) [2023-12-16 06:04:50,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 06:04:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:50,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 06:04:50,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:04:51,291 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:04:51,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:04:52,304 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:04:52,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536632272] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:04:52,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:04:52,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-12-16 06:04:52,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815977193] [2023-12-16 06:04:52,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:04:52,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-16 06:04:52,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:04:52,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-16 06:04:52,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-12-16 06:04:52,306 INFO L87 Difference]: Start difference. First operand 42116 states and 61202 transitions. Second operand has 20 states, 20 states have (on average 14.1) internal successors, (282), 19 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:54,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:04:54,622 INFO L93 Difference]: Finished difference Result 127914 states and 185636 transitions. [2023-12-16 06:04:54,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-16 06:04:54,623 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 14.1) internal successors, (282), 19 states have internal predecessors, (282), 0 states have call successors, (0), 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 112 [2023-12-16 06:04:54,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:04:54,718 INFO L225 Difference]: With dead ends: 127914 [2023-12-16 06:04:54,719 INFO L226 Difference]: Without dead ends: 90342 [2023-12-16 06:04:54,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=385, Invalid=1337, Unknown=0, NotChecked=0, Total=1722 [2023-12-16 06:04:54,738 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 2464 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2464 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 06:04:54,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2464 Valid, 1396 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 06:04:54,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90342 states. [2023-12-16 06:04:56,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90342 to 46078. [2023-12-16 06:04:56,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46078 states, 46077 states have (on average 1.451548494910693) internal successors, (66883), 46077 states have internal predecessors, (66883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:56,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46078 states to 46078 states and 66883 transitions. [2023-12-16 06:04:56,359 INFO L78 Accepts]: Start accepts. Automaton has 46078 states and 66883 transitions. Word has length 112 [2023-12-16 06:04:56,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:04:56,359 INFO L495 AbstractCegarLoop]: Abstraction has 46078 states and 66883 transitions. [2023-12-16 06:04:56,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 14.1) internal successors, (282), 19 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:56,360 INFO L276 IsEmpty]: Start isEmpty. Operand 46078 states and 66883 transitions. [2023-12-16 06:04:56,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-16 06:04:56,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:04:56,362 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:04:56,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-16 06:04:56,569 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,SelfDestructingSolverStorable20 [2023-12-16 06:04:56,570 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:04:56,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:04:56,570 INFO L85 PathProgramCache]: Analyzing trace with hash -964475461, now seen corresponding path program 1 times [2023-12-16 06:04:56,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:04:56,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716878005] [2023-12-16 06:04:56,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:56,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:04:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:56,638 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:04:56,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:04:56,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716878005] [2023-12-16 06:04:56,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716878005] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:04:56,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:04:56,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:04:56,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436416553] [2023-12-16 06:04:56,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:04:56,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:04:56,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:04:56,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:04:56,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:04:56,640 INFO L87 Difference]: Start difference. First operand 46078 states and 66883 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:57,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:04:57,189 INFO L93 Difference]: Finished difference Result 66476 states and 96557 transitions. [2023-12-16 06:04:57,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:04:57,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2023-12-16 06:04:57,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:04:57,214 INFO L225 Difference]: With dead ends: 66476 [2023-12-16 06:04:57,214 INFO L226 Difference]: Without dead ends: 23552 [2023-12-16 06:04:57,222 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 [2023-12-16 06:04:57,222 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 57 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:04:57,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 295 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:04:57,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23552 states. [2023-12-16 06:04:57,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23552 to 23196. [2023-12-16 06:04:57,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23196 states, 23195 states have (on average 1.4362147014442768) internal successors, (33313), 23195 states have internal predecessors, (33313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:57,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23196 states to 23196 states and 33313 transitions. [2023-12-16 06:04:57,880 INFO L78 Accepts]: Start accepts. Automaton has 23196 states and 33313 transitions. Word has length 112 [2023-12-16 06:04:57,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:04:57,880 INFO L495 AbstractCegarLoop]: Abstraction has 23196 states and 33313 transitions. [2023-12-16 06:04:57,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:57,880 INFO L276 IsEmpty]: Start isEmpty. Operand 23196 states and 33313 transitions. [2023-12-16 06:04:57,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-16 06:04:57,882 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:04:57,882 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:04:57,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-16 06:04:57,882 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:04:57,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:04:57,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1417262484, now seen corresponding path program 1 times [2023-12-16 06:04:57,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:04:57,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343609287] [2023-12-16 06:04:57,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:57,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:04:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:58,890 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:04:58,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:04:58,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343609287] [2023-12-16 06:04:58,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343609287] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:04:58,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950072117] [2023-12-16 06:04:58,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:58,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:04:58,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:04:58,894 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) [2023-12-16 06:04:58,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 06:04:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:59,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 06:04:59,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:04:59,572 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:04:59,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:05:00,303 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:05:00,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950072117] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:05:00,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:05:00,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 25 [2023-12-16 06:05:00,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871817564] [2023-12-16 06:05:00,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:05:00,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 06:05:00,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:05:00,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 06:05:00,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2023-12-16 06:05:00,305 INFO L87 Difference]: Start difference. First operand 23196 states and 33313 transitions. Second operand has 26 states, 26 states have (on average 11.615384615384615) internal successors, (302), 25 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:05:07,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:05:07,467 INFO L93 Difference]: Finished difference Result 242471 states and 344828 transitions. [2023-12-16 06:05:07,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-12-16 06:05:07,468 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.615384615384615) internal successors, (302), 25 states have internal predecessors, (302), 0 states have call successors, (0), 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 112 [2023-12-16 06:05:07,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:05:07,776 INFO L225 Difference]: With dead ends: 242471 [2023-12-16 06:05:07,776 INFO L226 Difference]: Without dead ends: 220046 [2023-12-16 06:05:07,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3192 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1680, Invalid=9032, Unknown=0, NotChecked=0, Total=10712 [2023-12-16 06:05:07,825 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 8547 mSDsluCounter, 2743 mSDsCounter, 0 mSdLazyCounter, 3107 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8547 SdHoareTripleChecker+Valid, 2980 SdHoareTripleChecker+Invalid, 3160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 3107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 06:05:07,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8547 Valid, 2980 Invalid, 3160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 3107 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 06:05:07,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220046 states. [2023-12-16 06:05:11,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220046 to 114153. [2023-12-16 06:05:11,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114153 states, 114152 states have (on average 1.4191253766907281) internal successors, (161996), 114152 states have internal predecessors, (161996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:05:11,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114153 states to 114153 states and 161996 transitions. [2023-12-16 06:05:11,612 INFO L78 Accepts]: Start accepts. Automaton has 114153 states and 161996 transitions. Word has length 112 [2023-12-16 06:05:11,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:05:11,612 INFO L495 AbstractCegarLoop]: Abstraction has 114153 states and 161996 transitions. [2023-12-16 06:05:11,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.615384615384615) internal successors, (302), 25 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:05:11,612 INFO L276 IsEmpty]: Start isEmpty. Operand 114153 states and 161996 transitions. [2023-12-16 06:05:11,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-16 06:05:11,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:05:11,616 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:05:11,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 06:05:11,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:05:11,822 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:05:11,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:05:11,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1527852569, now seen corresponding path program 1 times [2023-12-16 06:05:11,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:05:11,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822764877] [2023-12-16 06:05:11,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:05:11,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:05:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:05:11,879 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:05:11,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:05:11,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822764877] [2023-12-16 06:05:11,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822764877] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:05:11,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:05:11,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:05:11,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270776136] [2023-12-16 06:05:11,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:05:11,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:05:11,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:05:11,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:05:11,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:05:11,881 INFO L87 Difference]: Start difference. First operand 114153 states and 161996 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:05:13,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:05:13,614 INFO L93 Difference]: Finished difference Result 173120 states and 245201 transitions. [2023-12-16 06:05:13,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:05:13,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2023-12-16 06:05:13,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:05:13,698 INFO L225 Difference]: With dead ends: 173120 [2023-12-16 06:05:13,698 INFO L226 Difference]: Without dead ends: 70088 [2023-12-16 06:05:13,730 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 [2023-12-16 06:05:13,742 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 50 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:05:13,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 282 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:05:13,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70088 states. [2023-12-16 06:05:15,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70088 to 70086. [2023-12-16 06:05:15,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70086 states, 70085 states have (on average 1.397560105586074) internal successors, (97948), 70085 states have internal predecessors, (97948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:05:15,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70086 states to 70086 states and 97948 transitions. [2023-12-16 06:05:15,615 INFO L78 Accepts]: Start accepts. Automaton has 70086 states and 97948 transitions. Word has length 112 [2023-12-16 06:05:15,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:05:15,615 INFO L495 AbstractCegarLoop]: Abstraction has 70086 states and 97948 transitions. [2023-12-16 06:05:15,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:05:15,615 INFO L276 IsEmpty]: Start isEmpty. Operand 70086 states and 97948 transitions. [2023-12-16 06:05:15,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-16 06:05:15,618 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:05:15,619 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:05:15,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-16 06:05:15,619 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:05:15,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:05:15,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1622448631, now seen corresponding path program 1 times [2023-12-16 06:05:15,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:05:15,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064369892] [2023-12-16 06:05:15,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:05:15,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:05:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:05:15,674 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:05:15,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:05:15,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064369892] [2023-12-16 06:05:15,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064369892] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:05:15,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:05:15,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:05:15,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316225869] [2023-12-16 06:05:15,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:05:15,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:05:15,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:05:15,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:05:15,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:05:15,676 INFO L87 Difference]: Start difference. First operand 70086 states and 97948 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:05:16,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:05:16,533 INFO L93 Difference]: Finished difference Result 108776 states and 151736 transitions. [2023-12-16 06:05:16,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:05:16,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2023-12-16 06:05:16,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:05:16,587 INFO L225 Difference]: With dead ends: 108776 [2023-12-16 06:05:16,587 INFO L226 Difference]: Without dead ends: 44702 [2023-12-16 06:05:16,615 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 [2023-12-16 06:05:16,615 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 35 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:05:16,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 275 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:05:16,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44702 states. Received shutdown request... [2023-12-16 06:05:17,224 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 06:05:17,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44702 to 44700. [2023-12-16 06:05:17,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44700 states, 44699 states have (on average 1.3733416854963199) internal successors, (61387), 44699 states have internal predecessors, (61387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:05:17,726 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 06:05:17,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-16 06:05:17,727 WARN L619 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2023-12-16 06:05:17,730 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:05:17,732 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 06:05:17,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:05:17 BoogieIcfgContainer [2023-12-16 06:05:17,734 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 06:05:17,734 INFO L158 Benchmark]: Toolchain (without parser) took 60372.76ms. Allocated memory was 261.1MB in the beginning and 7.7GB in the end (delta: 7.4GB). Free memory was 219.9MB in the beginning and 4.8GB in the end (delta: -4.6GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. [2023-12-16 06:05:17,734 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 182.5MB. Free memory is still 134.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 06:05:17,734 INFO L158 Benchmark]: CACSL2BoogieTranslator took 333.21ms. Allocated memory is still 261.1MB. Free memory was 219.4MB in the beginning and 202.0MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-16 06:05:17,734 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.33ms. Allocated memory is still 261.1MB. Free memory was 202.0MB in the beginning and 198.5MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 06:05:17,735 INFO L158 Benchmark]: Boogie Preprocessor took 80.74ms. Allocated memory is still 261.1MB. Free memory was 198.5MB in the beginning and 194.7MB in the end (delta: 3.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 06:05:17,735 INFO L158 Benchmark]: RCFGBuilder took 701.63ms. Allocated memory is still 261.1MB. Free memory was 194.7MB in the beginning and 227.2MB in the end (delta: -32.5MB). Peak memory consumption was 40.4MB. Max. memory is 8.0GB. [2023-12-16 06:05:17,735 INFO L158 Benchmark]: TraceAbstraction took 59205.27ms. Allocated memory was 261.1MB in the beginning and 7.7GB in the end (delta: 7.4GB). Free memory was 226.7MB in the beginning and 4.8GB in the end (delta: -4.6GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. [2023-12-16 06:05:17,736 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 182.5MB. Free memory is still 134.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 333.21ms. Allocated memory is still 261.1MB. Free memory was 219.4MB in the beginning and 202.0MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.33ms. Allocated memory is still 261.1MB. Free memory was 202.0MB in the beginning and 198.5MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 80.74ms. Allocated memory is still 261.1MB. Free memory was 198.5MB in the beginning and 194.7MB in the end (delta: 3.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 701.63ms. Allocated memory is still 261.1MB. Free memory was 194.7MB in the beginning and 227.2MB in the end (delta: -32.5MB). Peak memory consumption was 40.4MB. Max. memory is 8.0GB. * TraceAbstraction took 59205.27ms. Allocated memory was 261.1MB in the beginning and 7.7GB in the end (delta: 7.4GB). Free memory was 226.7MB in the beginning and 4.8GB in the end (delta: -4.6GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 566]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 566). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 118 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 59.2s, OverallIterations: 25, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 28.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28790 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28790 mSDsluCounter, 22408 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17040 mSDsCounter, 244 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6881 IncrementalHoareTripleChecker+Invalid, 7125 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 244 mSolverCounterUnsat, 5368 mSDtfsCounter, 6881 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 987 GetRequests, 676 SyntacticMatches, 0 SemanticMatches, 311 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5506 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114153occurred in iteration=23, InterpolantAutomatonStates: 279, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 20.3s AutomataMinimizationTime, 25 MinimizatonAttempts, 318127 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 2683 NumberOfCodeBlocks, 2683 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 2984 ConstructedInterpolants, 0 QuantifiedInterpolants, 23261 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1219 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 31 InterpolantComputations, 22 PerfectInterpolantSequences, 285/381 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown