/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 04:28:22,355 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 04:28:22,400 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 04:28:22,403 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 04:28:22,403 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 04:28:22,431 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 04:28:22,432 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 04:28:22,432 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 04:28:22,433 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 04:28:22,433 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 04:28:22,433 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 04:28:22,434 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 04:28:22,434 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 04:28:22,434 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 04:28:22,435 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 04:28:22,435 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 04:28:22,435 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 04:28:22,435 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 04:28:22,436 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 04:28:22,440 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 04:28:22,443 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 04:28:22,443 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 04:28:22,443 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 04:28:22,444 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 04:28:22,444 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 04:28:22,445 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 04:28:22,445 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 04:28:22,445 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 04:28:22,445 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 04:28:22,446 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 04:28:22,446 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 04:28:22,446 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 04:28:22,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 04:28:22,447 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 04:28:22,447 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 04:28:22,447 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 04:28:22,447 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 04:28:22,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 04:28:22,447 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 04:28:22,448 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 04:28:22,448 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 04:28:22,448 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 04:28:22,448 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 04:28:22,448 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 04:28:22,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 04:28:22,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 04:28:22,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 04:28:22,653 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 04:28:22,653 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 04:28:22,654 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label22.c [2023-12-19 04:28:23,818 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 04:28:24,213 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 04:28:24,214 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label22.c [2023-12-19 04:28:24,238 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43f9cd09d/78f22710633844a3a8703de0a39e1ce2/FLAG9f0b68486 [2023-12-19 04:28:24,252 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43f9cd09d/78f22710633844a3a8703de0a39e1ce2 [2023-12-19 04:28:24,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 04:28:24,257 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 04:28:24,259 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 04:28:24,260 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 04:28:24,263 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 04:28:24,263 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:28:24" (1/1) ... [2023-12-19 04:28:24,264 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@582a5a56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:28:24, skipping insertion in model container [2023-12-19 04:28:24,264 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:28:24" (1/1) ... [2023-12-19 04:28:24,332 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 04:28:24,518 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label22.c[7589,7602] [2023-12-19 04:28:25,016 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 04:28:25,026 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 04:28:25,048 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label22.c[7589,7602] [2023-12-19 04:28:25,234 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 04:28:25,247 INFO L206 MainTranslator]: Completed translation [2023-12-19 04:28:25,248 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:28:25 WrapperNode [2023-12-19 04:28:25,248 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 04:28:25,249 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 04:28:25,249 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 04:28:25,249 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 04:28:25,253 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:28:25" (1/1) ... [2023-12-19 04:28:25,304 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:28:25" (1/1) ... [2023-12-19 04:28:25,581 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2023-12-19 04:28:25,581 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 04:28:25,582 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 04:28:25,582 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 04:28:25,582 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 04:28:25,592 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:28:25" (1/1) ... [2023-12-19 04:28:25,592 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:28:25" (1/1) ... [2023-12-19 04:28:25,723 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:28:25" (1/1) ... [2023-12-19 04:28:25,854 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 04:28:25,855 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:28:25" (1/1) ... [2023-12-19 04:28:25,855 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:28:25" (1/1) ... [2023-12-19 04:28:26,002 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:28:25" (1/1) ... [2023-12-19 04:28:26,015 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:28:25" (1/1) ... [2023-12-19 04:28:26,033 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:28:25" (1/1) ... [2023-12-19 04:28:26,047 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:28:25" (1/1) ... [2023-12-19 04:28:26,077 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 04:28:26,078 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 04:28:26,078 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 04:28:26,079 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 04:28:26,079 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:28:25" (1/1) ... [2023-12-19 04:28:26,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 04:28:26,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:28:26,100 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 04:28:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 04:28:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 04:28:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 04:28:26,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 04:28:26,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 04:28:26,189 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 04:28:26,191 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 04:28:28,881 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 04:28:28,954 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 04:28:28,954 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 04:28:28,955 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:28:28 BoogieIcfgContainer [2023-12-19 04:28:28,955 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 04:28:28,958 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 04:28:28,958 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 04:28:29,005 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 04:28:29,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 04:28:24" (1/3) ... [2023-12-19 04:28:29,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58206c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:28:29, skipping insertion in model container [2023-12-19 04:28:29,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:28:25" (2/3) ... [2023-12-19 04:28:29,007 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58206c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:28:29, skipping insertion in model container [2023-12-19 04:28:29,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:28:28" (3/3) ... [2023-12-19 04:28:29,008 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label22.c [2023-12-19 04:28:29,026 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 04:28:29,026 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 04:28:29,093 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 04:28:29,099 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;@167ef1c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 04:28:29,099 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 04:28:29,105 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:29,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-19 04:28:29,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:28:29,113 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:28:29,113 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:28:29,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:28:29,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1255789717, now seen corresponding path program 1 times [2023-12-19 04:28:29,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:28:29,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115514194] [2023-12-19 04:28:29,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:28:29,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:28:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:28:29,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:28:29,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:28:29,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115514194] [2023-12-19 04:28:29,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115514194] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:28:29,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:28:29,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:28:29,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081017254] [2023-12-19 04:28:29,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:28:29,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 04:28:29,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:28:29,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 04:28:29,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 04:28:29,318 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:29,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:28:29,397 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2023-12-19 04:28:29,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 04:28:29,405 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-19 04:28:29,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:28:29,419 INFO L225 Difference]: With dead ends: 1055 [2023-12-19 04:28:29,419 INFO L226 Difference]: Without dead ends: 526 [2023-12-19 04:28:29,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 04:28:29,426 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:28:29,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 04:28:29,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-19 04:28:29,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2023-12-19 04:28:29,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:29,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2023-12-19 04:28:29,477 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 50 [2023-12-19 04:28:29,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:28:29,477 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2023-12-19 04:28:29,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:29,477 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2023-12-19 04:28:29,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-19 04:28:29,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:28:29,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:28:29,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 04:28:29,479 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:28:29,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:28:29,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1156969977, now seen corresponding path program 1 times [2023-12-19 04:28:29,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:28:29,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040440831] [2023-12-19 04:28:29,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:28:29,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:28:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:28:29,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:28:29,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:28:29,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040440831] [2023-12-19 04:28:29,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040440831] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:28:29,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:28:29,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:28:29,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711999538] [2023-12-19 04:28:29,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:28:29,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:28:29,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:28:29,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:28:29,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:28:29,671 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:31,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:28:31,764 INFO L93 Difference]: Finished difference Result 1522 states and 2728 transitions. [2023-12-19 04:28:31,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:28:31,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-19 04:28:31,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:28:31,769 INFO L225 Difference]: With dead ends: 1522 [2023-12-19 04:28:31,769 INFO L226 Difference]: Without dead ends: 997 [2023-12-19 04:28:31,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:28:31,772 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 460 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:28:31,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 239 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 04:28:31,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2023-12-19 04:28:31,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 981. [2023-12-19 04:28:31,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 980 states have (on average 1.7081632653061225) internal successors, (1674), 980 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:31,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1674 transitions. [2023-12-19 04:28:31,866 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1674 transitions. Word has length 50 [2023-12-19 04:28:31,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:28:31,866 INFO L495 AbstractCegarLoop]: Abstraction has 981 states and 1674 transitions. [2023-12-19 04:28:31,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:31,866 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1674 transitions. [2023-12-19 04:28:31,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-19 04:28:31,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:28:31,869 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:28:31,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 04:28:31,869 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:28:31,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:28:31,870 INFO L85 PathProgramCache]: Analyzing trace with hash 132996429, now seen corresponding path program 1 times [2023-12-19 04:28:31,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:28:31,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557122734] [2023-12-19 04:28:31,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:28:31,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:28:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:28:32,008 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:28:32,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:28:32,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557122734] [2023-12-19 04:28:32,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557122734] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:28:32,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:28:32,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:28:32,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216934465] [2023-12-19 04:28:32,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:28:32,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:28:32,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:28:32,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:28:32,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:28:32,013 INFO L87 Difference]: Start difference. First operand 981 states and 1674 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:33,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:28:33,792 INFO L93 Difference]: Finished difference Result 2840 states and 4880 transitions. [2023-12-19 04:28:33,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:28:33,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-19 04:28:33,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:28:33,798 INFO L225 Difference]: With dead ends: 2840 [2023-12-19 04:28:33,798 INFO L226 Difference]: Without dead ends: 1860 [2023-12-19 04:28:33,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:28:33,800 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:28:33,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 494 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 04:28:33,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2023-12-19 04:28:33,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1856. [2023-12-19 04:28:33,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1855 states have (on average 1.4549865229110512) internal successors, (2699), 1855 states have internal predecessors, (2699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:33,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 2699 transitions. [2023-12-19 04:28:33,826 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 2699 transitions. Word has length 115 [2023-12-19 04:28:33,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:28:33,826 INFO L495 AbstractCegarLoop]: Abstraction has 1856 states and 2699 transitions. [2023-12-19 04:28:33,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:33,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 2699 transitions. [2023-12-19 04:28:33,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-19 04:28:33,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:28:33,829 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:28:33,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 04:28:33,829 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:28:33,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:28:33,830 INFO L85 PathProgramCache]: Analyzing trace with hash 513240376, now seen corresponding path program 1 times [2023-12-19 04:28:33,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:28:33,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988224291] [2023-12-19 04:28:33,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:28:33,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:28:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:28:34,129 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:28:34,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:28:34,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988224291] [2023-12-19 04:28:34,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988224291] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:28:34,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:28:34,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:28:34,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242180289] [2023-12-19 04:28:34,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:28:34,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:28:34,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:28:34,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:28:34,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:28:34,132 INFO L87 Difference]: Start difference. First operand 1856 states and 2699 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:36,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:28:36,201 INFO L93 Difference]: Finished difference Result 4590 states and 6639 transitions. [2023-12-19 04:28:36,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:28:36,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2023-12-19 04:28:36,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:28:36,209 INFO L225 Difference]: With dead ends: 4590 [2023-12-19 04:28:36,209 INFO L226 Difference]: Without dead ends: 2735 [2023-12-19 04:28:36,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:28:36,212 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 352 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 1764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:28:36,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 535 Invalid, 1764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 04:28:36,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2735 states. [2023-12-19 04:28:36,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2735 to 2715. [2023-12-19 04:28:36,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2715 states, 2714 states have (on average 1.3909358879882092) internal successors, (3775), 2714 states have internal predecessors, (3775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:36,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 3775 transitions. [2023-12-19 04:28:36,246 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 3775 transitions. Word has length 155 [2023-12-19 04:28:36,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:28:36,247 INFO L495 AbstractCegarLoop]: Abstraction has 2715 states and 3775 transitions. [2023-12-19 04:28:36,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:36,247 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 3775 transitions. [2023-12-19 04:28:36,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-19 04:28:36,249 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:28:36,249 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:28:36,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 04:28:36,249 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:28:36,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:28:36,249 INFO L85 PathProgramCache]: Analyzing trace with hash -138781177, now seen corresponding path program 1 times [2023-12-19 04:28:36,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:28:36,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69412904] [2023-12-19 04:28:36,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:28:36,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:28:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:28:36,402 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:28:36,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:28:36,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69412904] [2023-12-19 04:28:36,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69412904] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:28:36,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:28:36,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:28:36,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261763186] [2023-12-19 04:28:36,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:28:36,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:28:36,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:28:36,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:28:36,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:28:36,406 INFO L87 Difference]: Start difference. First operand 2715 states and 3775 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:38,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:28:38,202 INFO L93 Difference]: Finished difference Result 6708 states and 9428 transitions. [2023-12-19 04:28:38,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:28:38,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2023-12-19 04:28:38,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:28:38,218 INFO L225 Difference]: With dead ends: 6708 [2023-12-19 04:28:38,218 INFO L226 Difference]: Without dead ends: 3994 [2023-12-19 04:28:38,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:28:38,226 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 347 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:28:38,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 04:28:38,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2023-12-19 04:28:38,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 3141. [2023-12-19 04:28:38,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3141 states, 3140 states have (on average 1.2745222929936306) internal successors, (4002), 3140 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:38,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3141 states to 3141 states and 4002 transitions. [2023-12-19 04:28:38,296 INFO L78 Accepts]: Start accepts. Automaton has 3141 states and 4002 transitions. Word has length 161 [2023-12-19 04:28:38,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:28:38,297 INFO L495 AbstractCegarLoop]: Abstraction has 3141 states and 4002 transitions. [2023-12-19 04:28:38,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:38,298 INFO L276 IsEmpty]: Start isEmpty. Operand 3141 states and 4002 transitions. [2023-12-19 04:28:38,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-19 04:28:38,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:28:38,301 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:28:38,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 04:28:38,302 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:28:38,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:28:38,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1589572620, now seen corresponding path program 1 times [2023-12-19 04:28:38,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:28:38,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291597639] [2023-12-19 04:28:38,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:28:38,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:28:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:28:38,748 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:28:38,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:28:38,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291597639] [2023-12-19 04:28:38,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291597639] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:28:38,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:28:38,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 04:28:38,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451532406] [2023-12-19 04:28:38,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:28:38,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 04:28:38,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:28:38,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 04:28:38,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:28:38,752 INFO L87 Difference]: Start difference. First operand 3141 states and 4002 transitions. Second operand has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:41,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:28:41,249 INFO L93 Difference]: Finished difference Result 8006 states and 10509 transitions. [2023-12-19 04:28:41,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:28:41,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 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 198 [2023-12-19 04:28:41,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:28:41,265 INFO L225 Difference]: With dead ends: 8006 [2023-12-19 04:28:41,266 INFO L226 Difference]: Without dead ends: 4866 [2023-12-19 04:28:41,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:28:41,272 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 1655 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 978 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1655 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 2753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 978 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:28:41,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1655 Valid, 839 Invalid, 2753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [978 Valid, 1775 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 04:28:41,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4866 states. [2023-12-19 04:28:41,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4866 to 4851. [2023-12-19 04:28:41,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4851 states, 4850 states have (on average 1.26659793814433) internal successors, (6143), 4850 states have internal predecessors, (6143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:41,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4851 states to 4851 states and 6143 transitions. [2023-12-19 04:28:41,351 INFO L78 Accepts]: Start accepts. Automaton has 4851 states and 6143 transitions. Word has length 198 [2023-12-19 04:28:41,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:28:41,352 INFO L495 AbstractCegarLoop]: Abstraction has 4851 states and 6143 transitions. [2023-12-19 04:28:41,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:41,352 INFO L276 IsEmpty]: Start isEmpty. Operand 4851 states and 6143 transitions. [2023-12-19 04:28:41,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-12-19 04:28:41,354 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:28:41,355 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:28:41,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 04:28:41,355 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:28:41,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:28:41,355 INFO L85 PathProgramCache]: Analyzing trace with hash 2115883771, now seen corresponding path program 1 times [2023-12-19 04:28:41,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:28:41,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549302916] [2023-12-19 04:28:41,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:28:41,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:28:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:28:41,507 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-19 04:28:41,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:28:41,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549302916] [2023-12-19 04:28:41,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549302916] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:28:41,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:28:41,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:28:41,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820112614] [2023-12-19 04:28:41,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:28:41,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:28:41,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:28:41,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:28:41,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:28:41,511 INFO L87 Difference]: Start difference. First operand 4851 states and 6143 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:43,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:28:43,716 INFO L93 Difference]: Finished difference Result 12248 states and 15824 transitions. [2023-12-19 04:28:43,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:28:43,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 204 [2023-12-19 04:28:43,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:28:43,737 INFO L225 Difference]: With dead ends: 12248 [2023-12-19 04:28:43,737 INFO L226 Difference]: Without dead ends: 7398 [2023-12-19 04:28:43,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:28:43,745 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 396 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 1696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:28:43,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 543 Invalid, 1696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 04:28:43,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7398 states. [2023-12-19 04:28:43,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7398 to 4825. [2023-12-19 04:28:43,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4825 states, 4824 states have (on average 1.265339966832504) internal successors, (6104), 4824 states have internal predecessors, (6104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:43,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4825 states to 4825 states and 6104 transitions. [2023-12-19 04:28:43,846 INFO L78 Accepts]: Start accepts. Automaton has 4825 states and 6104 transitions. Word has length 204 [2023-12-19 04:28:43,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:28:43,847 INFO L495 AbstractCegarLoop]: Abstraction has 4825 states and 6104 transitions. [2023-12-19 04:28:43,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:43,847 INFO L276 IsEmpty]: Start isEmpty. Operand 4825 states and 6104 transitions. [2023-12-19 04:28:43,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-19 04:28:43,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:28:43,850 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-19 04:28:43,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 04:28:43,850 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:28:43,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:28:43,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1042697993, now seen corresponding path program 1 times [2023-12-19 04:28:43,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:28:43,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854808827] [2023-12-19 04:28:43,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:28:43,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:28:43,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:28:44,196 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 75 proven. 22 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-19 04:28:44,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:28:44,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854808827] [2023-12-19 04:28:44,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854808827] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:28:44,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348106198] [2023-12-19 04:28:44,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:28:44,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:28:44,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:28:44,200 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 04:28:44,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 04:28:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:28:44,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 04:28:44,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:28:44,399 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-19 04:28:44,399 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:28:44,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348106198] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:28:44,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:28:44,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-19 04:28:44,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423048538] [2023-12-19 04:28:44,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:28:44,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:28:44,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:28:44,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:28:44,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:28:44,401 INFO L87 Difference]: Start difference. First operand 4825 states and 6104 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:46,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:28:46,506 INFO L93 Difference]: Finished difference Result 13480 states and 17130 transitions. [2023-12-19 04:28:46,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:28:46,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 217 [2023-12-19 04:28:46,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:28:46,526 INFO L225 Difference]: With dead ends: 13480 [2023-12-19 04:28:46,526 INFO L226 Difference]: Without dead ends: 8656 [2023-12-19 04:28:46,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:28:46,532 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 432 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:28:46,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 481 Invalid, 1749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 04:28:46,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8656 states. [2023-12-19 04:28:46,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8656 to 7377. [2023-12-19 04:28:46,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7377 states, 7376 states have (on average 1.247966377440347) internal successors, (9205), 7376 states have internal predecessors, (9205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:46,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7377 states to 7377 states and 9205 transitions. [2023-12-19 04:28:46,714 INFO L78 Accepts]: Start accepts. Automaton has 7377 states and 9205 transitions. Word has length 217 [2023-12-19 04:28:46,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:28:46,714 INFO L495 AbstractCegarLoop]: Abstraction has 7377 states and 9205 transitions. [2023-12-19 04:28:46,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:46,715 INFO L276 IsEmpty]: Start isEmpty. Operand 7377 states and 9205 transitions. [2023-12-19 04:28:46,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-12-19 04:28:46,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:28:46,718 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:28:46,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 04:28:46,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:28:46,925 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:28:46,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:28:46,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1292040107, now seen corresponding path program 1 times [2023-12-19 04:28:46,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:28:46,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95567333] [2023-12-19 04:28:46,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:28:46,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:28:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:28:47,154 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-19 04:28:47,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:28:47,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95567333] [2023-12-19 04:28:47,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95567333] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:28:47,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:28:47,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:28:47,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995791764] [2023-12-19 04:28:47,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:28:47,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:28:47,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:28:47,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:28:47,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:28:47,159 INFO L87 Difference]: Start difference. First operand 7377 states and 9205 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:49,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:28:49,683 INFO L93 Difference]: Finished difference Result 18606 states and 23434 transitions. [2023-12-19 04:28:49,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:28:49,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 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 266 [2023-12-19 04:28:49,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:28:49,707 INFO L225 Difference]: With dead ends: 18606 [2023-12-19 04:28:49,707 INFO L226 Difference]: Without dead ends: 10378 [2023-12-19 04:28:49,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:28:49,721 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 449 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:28:49,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 1017 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 04:28:49,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10378 states. [2023-12-19 04:28:49,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10378 to 10370. [2023-12-19 04:28:49,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10370 states, 10369 states have (on average 1.2060950911370432) internal successors, (12506), 10369 states have internal predecessors, (12506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:49,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10370 states to 10370 states and 12506 transitions. [2023-12-19 04:28:49,864 INFO L78 Accepts]: Start accepts. Automaton has 10370 states and 12506 transitions. Word has length 266 [2023-12-19 04:28:49,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:28:49,865 INFO L495 AbstractCegarLoop]: Abstraction has 10370 states and 12506 transitions. [2023-12-19 04:28:49,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:49,865 INFO L276 IsEmpty]: Start isEmpty. Operand 10370 states and 12506 transitions. [2023-12-19 04:28:49,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2023-12-19 04:28:49,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:28:49,870 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:28:49,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 04:28:49,870 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:28:49,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:28:49,870 INFO L85 PathProgramCache]: Analyzing trace with hash -225339026, now seen corresponding path program 1 times [2023-12-19 04:28:49,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:28:49,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153753714] [2023-12-19 04:28:49,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:28:49,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:28:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:28:50,251 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 236 proven. 70 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-19 04:28:50,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:28:50,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153753714] [2023-12-19 04:28:50,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153753714] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:28:50,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559574967] [2023-12-19 04:28:50,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:28:50,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:28:50,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:28:50,253 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 04:28:50,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 04:28:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:28:50,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 04:28:50,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:28:50,588 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 236 proven. 70 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-19 04:28:50,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 04:28:50,823 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 306 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-19 04:28:50,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559574967] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 04:28:50,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-19 04:28:50,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-12-19 04:28:50,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916546543] [2023-12-19 04:28:50,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:28:50,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:28:50,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:28:50,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:28:50,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:28:50,826 INFO L87 Difference]: Start difference. First operand 10370 states and 12506 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:53,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:28:53,954 INFO L93 Difference]: Finished difference Result 32690 states and 39750 transitions. [2023-12-19 04:28:53,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:28:53,955 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 274 [2023-12-19 04:28:53,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:28:54,012 INFO L225 Difference]: With dead ends: 32690 [2023-12-19 04:28:54,012 INFO L226 Difference]: Without dead ends: 21460 [2023-12-19 04:28:54,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:28:54,025 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 903 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 2320 mSolverCounterSat, 852 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 3172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 852 IncrementalHoareTripleChecker+Valid, 2320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 04:28:54,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 155 Invalid, 3172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [852 Valid, 2320 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 04:28:54,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21460 states. [2023-12-19 04:28:54,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21460 to 21458. [2023-12-19 04:28:54,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21458 states, 21457 states have (on average 1.1587826816423545) internal successors, (24864), 21457 states have internal predecessors, (24864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:54,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21458 states to 21458 states and 24864 transitions. [2023-12-19 04:28:54,226 INFO L78 Accepts]: Start accepts. Automaton has 21458 states and 24864 transitions. Word has length 274 [2023-12-19 04:28:54,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:28:54,227 INFO L495 AbstractCegarLoop]: Abstraction has 21458 states and 24864 transitions. [2023-12-19 04:28:54,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:54,227 INFO L276 IsEmpty]: Start isEmpty. Operand 21458 states and 24864 transitions. [2023-12-19 04:28:54,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2023-12-19 04:28:54,230 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:28:54,231 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:28:54,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 04:28:54,436 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,SelfDestructingSolverStorable9 [2023-12-19 04:28:54,437 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:28:54,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:28:54,437 INFO L85 PathProgramCache]: Analyzing trace with hash 898150666, now seen corresponding path program 1 times [2023-12-19 04:28:54,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:28:54,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880758012] [2023-12-19 04:28:54,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:28:54,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:28:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:28:54,585 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 289 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-19 04:28:54,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:28:54,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880758012] [2023-12-19 04:28:54,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880758012] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:28:54,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:28:54,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:28:54,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790548950] [2023-12-19 04:28:54,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:28:54,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:28:54,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:28:54,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:28:54,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:28:54,587 INFO L87 Difference]: Start difference. First operand 21458 states and 24864 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:56,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:28:56,382 INFO L93 Difference]: Finished difference Result 47591 states and 55278 transitions. [2023-12-19 04:28:56,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:28:56,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 287 [2023-12-19 04:28:56,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:28:56,429 INFO L225 Difference]: With dead ends: 47591 [2023-12-19 04:28:56,429 INFO L226 Difference]: Without dead ends: 25707 [2023-12-19 04:28:56,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:28:56,453 INFO L413 NwaCegarLoop]: 791 mSDtfsCounter, 371 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:28:56,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 857 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 04:28:56,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25707 states. [2023-12-19 04:28:56,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25707 to 25707. [2023-12-19 04:28:56,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25707 states, 25706 states have (on average 1.1349101377110402) internal successors, (29174), 25706 states have internal predecessors, (29174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:56,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25707 states to 25707 states and 29174 transitions. [2023-12-19 04:28:56,773 INFO L78 Accepts]: Start accepts. Automaton has 25707 states and 29174 transitions. Word has length 287 [2023-12-19 04:28:56,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:28:56,773 INFO L495 AbstractCegarLoop]: Abstraction has 25707 states and 29174 transitions. [2023-12-19 04:28:56,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:28:56,774 INFO L276 IsEmpty]: Start isEmpty. Operand 25707 states and 29174 transitions. [2023-12-19 04:28:56,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2023-12-19 04:28:56,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:28:56,780 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:28:56,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 04:28:56,781 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:28:56,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:28:56,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1314930607, now seen corresponding path program 1 times [2023-12-19 04:28:56,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:28:56,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766384788] [2023-12-19 04:28:56,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:28:56,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:28:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:28:57,154 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 377 proven. 73 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-19 04:28:57,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:28:57,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766384788] [2023-12-19 04:28:57,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766384788] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:28:57,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218025415] [2023-12-19 04:28:57,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:28:57,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:28:57,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:28:57,156 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 04:28:57,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 04:28:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:28:57,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 04:28:57,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:28:57,407 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 377 proven. 73 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-19 04:28:57,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 04:28:57,693 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 450 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-12-19 04:28:57,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218025415] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 04:28:57,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-19 04:28:57,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-12-19 04:28:57,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013598332] [2023-12-19 04:28:57,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:28:57,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:28:57,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:28:57,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:28:57,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:28:57,696 INFO L87 Difference]: Start difference. First operand 25707 states and 29174 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:00,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:00,414 INFO L93 Difference]: Finished difference Result 62498 states and 71198 transitions. [2023-12-19 04:29:00,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:29:00,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 348 [2023-12-19 04:29:00,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:00,458 INFO L225 Difference]: With dead ends: 62498 [2023-12-19 04:29:00,459 INFO L226 Difference]: Without dead ends: 36365 [2023-12-19 04:29:00,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 693 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:29:00,482 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 842 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 2346 mSolverCounterSat, 493 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 2839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 493 IncrementalHoareTripleChecker+Valid, 2346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:00,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 192 Invalid, 2839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [493 Valid, 2346 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 04:29:00,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36365 states. [2023-12-19 04:29:00,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36365 to 34237. [2023-12-19 04:29:00,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34237 states, 34236 states have (on average 1.1454609183315807) internal successors, (39216), 34236 states have internal predecessors, (39216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:00,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34237 states to 34237 states and 39216 transitions. [2023-12-19 04:29:00,788 INFO L78 Accepts]: Start accepts. Automaton has 34237 states and 39216 transitions. Word has length 348 [2023-12-19 04:29:00,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:00,788 INFO L495 AbstractCegarLoop]: Abstraction has 34237 states and 39216 transitions. [2023-12-19 04:29:00,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:00,789 INFO L276 IsEmpty]: Start isEmpty. Operand 34237 states and 39216 transitions. [2023-12-19 04:29:00,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2023-12-19 04:29:00,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:00,797 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:29:00,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 04:29:01,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:29:01,006 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:01,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:01,006 INFO L85 PathProgramCache]: Analyzing trace with hash 257958992, now seen corresponding path program 1 times [2023-12-19 04:29:01,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:01,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374977493] [2023-12-19 04:29:01,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:01,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:01,282 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2023-12-19 04:29:01,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:01,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374977493] [2023-12-19 04:29:01,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374977493] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:01,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:01,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:29:01,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728734397] [2023-12-19 04:29:01,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:01,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:29:01,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:01,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:29:01,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:01,286 INFO L87 Difference]: Start difference. First operand 34237 states and 39216 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:03,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:03,326 INFO L93 Difference]: Finished difference Result 80387 states and 92353 transitions. [2023-12-19 04:29:03,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:29:03,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 471 [2023-12-19 04:29:03,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:03,445 INFO L225 Difference]: With dead ends: 80387 [2023-12-19 04:29:03,445 INFO L226 Difference]: Without dead ends: 45724 [2023-12-19 04:29:03,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:03,471 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 485 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:03,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 253 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 04:29:03,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45724 states. [2023-12-19 04:29:03,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45724 to 33770. [2023-12-19 04:29:03,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33770 states, 33769 states have (on average 1.1432971068139417) internal successors, (38608), 33769 states have internal predecessors, (38608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:04,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33770 states to 33770 states and 38608 transitions. [2023-12-19 04:29:04,048 INFO L78 Accepts]: Start accepts. Automaton has 33770 states and 38608 transitions. Word has length 471 [2023-12-19 04:29:04,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:04,058 INFO L495 AbstractCegarLoop]: Abstraction has 33770 states and 38608 transitions. [2023-12-19 04:29:04,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:04,059 INFO L276 IsEmpty]: Start isEmpty. Operand 33770 states and 38608 transitions. [2023-12-19 04:29:04,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2023-12-19 04:29:04,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:04,076 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:29:04,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 04:29:04,076 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:04,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:04,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1230681176, now seen corresponding path program 1 times [2023-12-19 04:29:04,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:04,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711313962] [2023-12-19 04:29:04,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:04,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:04,471 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 364 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-19 04:29:04,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:04,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711313962] [2023-12-19 04:29:04,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711313962] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:04,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:04,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:29:04,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362015045] [2023-12-19 04:29:04,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:04,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:29:04,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:04,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:29:04,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:04,475 INFO L87 Difference]: Start difference. First operand 33770 states and 38608 transitions. Second operand has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:06,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:06,593 INFO L93 Difference]: Finished difference Result 80765 states and 92382 transitions. [2023-12-19 04:29:06,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:29:06,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 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 483 [2023-12-19 04:29:06,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:06,742 INFO L225 Difference]: With dead ends: 80765 [2023-12-19 04:29:06,742 INFO L226 Difference]: Without dead ends: 43594 [2023-12-19 04:29:06,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:06,756 INFO L413 NwaCegarLoop]: 775 mSDtfsCounter, 372 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:06,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 843 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 04:29:06,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43594 states. [2023-12-19 04:29:07,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43594 to 38897. [2023-12-19 04:29:07,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38897 states, 38896 states have (on average 1.118264088852324) internal successors, (43496), 38896 states have internal predecessors, (43496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:07,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38897 states to 38897 states and 43496 transitions. [2023-12-19 04:29:07,241 INFO L78 Accepts]: Start accepts. Automaton has 38897 states and 43496 transitions. Word has length 483 [2023-12-19 04:29:07,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:07,262 INFO L495 AbstractCegarLoop]: Abstraction has 38897 states and 43496 transitions. [2023-12-19 04:29:07,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:07,263 INFO L276 IsEmpty]: Start isEmpty. Operand 38897 states and 43496 transitions. [2023-12-19 04:29:07,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2023-12-19 04:29:07,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:07,284 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:29:07,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 04:29:07,285 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:07,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:07,285 INFO L85 PathProgramCache]: Analyzing trace with hash -431960701, now seen corresponding path program 1 times [2023-12-19 04:29:07,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:07,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669515276] [2023-12-19 04:29:07,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:07,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:07,785 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-12-19 04:29:07,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:07,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669515276] [2023-12-19 04:29:07,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669515276] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:07,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:07,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:29:07,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256966787] [2023-12-19 04:29:07,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:07,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:29:07,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:07,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:29:07,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:07,787 INFO L87 Difference]: Start difference. First operand 38897 states and 43496 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:09,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:09,592 INFO L93 Difference]: Finished difference Result 90993 states and 101593 transitions. [2023-12-19 04:29:09,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:29:09,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 485 [2023-12-19 04:29:09,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:09,653 INFO L225 Difference]: With dead ends: 90993 [2023-12-19 04:29:09,653 INFO L226 Difference]: Without dead ends: 51665 [2023-12-19 04:29:09,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:09,678 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 471 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 1538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:09,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 163 Invalid, 1538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 04:29:09,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51665 states. [2023-12-19 04:29:10,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51665 to 49094. [2023-12-19 04:29:10,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49094 states, 49093 states have (on average 1.117104271484733) internal successors, (54842), 49093 states have internal predecessors, (54842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:10,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49094 states to 49094 states and 54842 transitions. [2023-12-19 04:29:10,376 INFO L78 Accepts]: Start accepts. Automaton has 49094 states and 54842 transitions. Word has length 485 [2023-12-19 04:29:10,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:10,376 INFO L495 AbstractCegarLoop]: Abstraction has 49094 states and 54842 transitions. [2023-12-19 04:29:10,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:10,376 INFO L276 IsEmpty]: Start isEmpty. Operand 49094 states and 54842 transitions. [2023-12-19 04:29:10,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2023-12-19 04:29:10,385 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:10,385 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:29:10,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 04:29:10,385 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:10,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:10,386 INFO L85 PathProgramCache]: Analyzing trace with hash -63649556, now seen corresponding path program 1 times [2023-12-19 04:29:10,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:10,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711398281] [2023-12-19 04:29:10,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:10,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:10,823 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 456 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-12-19 04:29:10,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:10,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711398281] [2023-12-19 04:29:10,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711398281] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:10,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:10,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:29:10,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807554896] [2023-12-19 04:29:10,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:10,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:29:10,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:10,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:29:10,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:10,825 INFO L87 Difference]: Start difference. First operand 49094 states and 54842 transitions. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:12,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:12,725 INFO L93 Difference]: Finished difference Result 111374 states and 124282 transitions. [2023-12-19 04:29:12,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:29:12,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 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 493 [2023-12-19 04:29:12,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:12,829 INFO L225 Difference]: With dead ends: 111374 [2023-12-19 04:29:12,830 INFO L226 Difference]: Without dead ends: 57604 [2023-12-19 04:29:12,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:12,871 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 280 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:12,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 775 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 04:29:12,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57604 states. [2023-12-19 04:29:13,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57604 to 45662. [2023-12-19 04:29:13,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45662 states, 45661 states have (on average 1.1177810385230285) internal successors, (51039), 45661 states have internal predecessors, (51039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:13,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45662 states to 45662 states and 51039 transitions. [2023-12-19 04:29:13,622 INFO L78 Accepts]: Start accepts. Automaton has 45662 states and 51039 transitions. Word has length 493 [2023-12-19 04:29:13,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:13,623 INFO L495 AbstractCegarLoop]: Abstraction has 45662 states and 51039 transitions. [2023-12-19 04:29:13,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:13,623 INFO L276 IsEmpty]: Start isEmpty. Operand 45662 states and 51039 transitions. [2023-12-19 04:29:13,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2023-12-19 04:29:13,646 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:13,646 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:29:13,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 04:29:13,646 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:13,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:13,647 INFO L85 PathProgramCache]: Analyzing trace with hash 97402296, now seen corresponding path program 1 times [2023-12-19 04:29:13,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:13,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711094451] [2023-12-19 04:29:13,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:13,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:14,045 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 447 proven. 0 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-12-19 04:29:14,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:14,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711094451] [2023-12-19 04:29:14,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711094451] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:14,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:14,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:29:14,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702816549] [2023-12-19 04:29:14,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:14,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:29:14,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:14,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:29:14,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:14,047 INFO L87 Difference]: Start difference. First operand 45662 states and 51039 transitions. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:16,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:16,043 INFO L93 Difference]: Finished difference Result 100252 states and 111803 transitions. [2023-12-19 04:29:16,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:29:16,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 593 [2023-12-19 04:29:16,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:16,122 INFO L225 Difference]: With dead ends: 100252 [2023-12-19 04:29:16,123 INFO L226 Difference]: Without dead ends: 50757 [2023-12-19 04:29:16,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:16,138 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 493 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:16,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 700 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 04:29:16,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50757 states. [2023-12-19 04:29:16,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50757 to 49053. [2023-12-19 04:29:16,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49053 states, 49052 states have (on average 1.105031395254016) internal successors, (54204), 49052 states have internal predecessors, (54204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:16,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49053 states to 49053 states and 54204 transitions. [2023-12-19 04:29:16,783 INFO L78 Accepts]: Start accepts. Automaton has 49053 states and 54204 transitions. Word has length 593 [2023-12-19 04:29:16,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:16,784 INFO L495 AbstractCegarLoop]: Abstraction has 49053 states and 54204 transitions. [2023-12-19 04:29:16,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:16,784 INFO L276 IsEmpty]: Start isEmpty. Operand 49053 states and 54204 transitions. [2023-12-19 04:29:16,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2023-12-19 04:29:16,807 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:16,807 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:29:16,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 04:29:16,807 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:16,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:16,808 INFO L85 PathProgramCache]: Analyzing trace with hash -443582747, now seen corresponding path program 1 times [2023-12-19 04:29:16,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:16,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363083025] [2023-12-19 04:29:16,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:16,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:17,975 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-19 04:29:17,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:17,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363083025] [2023-12-19 04:29:17,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363083025] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:17,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:17,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:29:17,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470748338] [2023-12-19 04:29:17,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:17,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:29:17,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:17,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:29:17,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:17,977 INFO L87 Difference]: Start difference. First operand 49053 states and 54204 transitions. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:19,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:19,551 INFO L93 Difference]: Finished difference Result 98104 states and 108406 transitions. [2023-12-19 04:29:19,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:29:19,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 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 617 [2023-12-19 04:29:19,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:19,617 INFO L225 Difference]: With dead ends: 98104 [2023-12-19 04:29:19,617 INFO L226 Difference]: Without dead ends: 49052 [2023-12-19 04:29:19,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:19,649 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 573 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:19,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 544 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 04:29:19,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49052 states. [2023-12-19 04:29:20,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49052 to 49052. [2023-12-19 04:29:20,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49052 states, 49051 states have (on average 1.104870440969603) internal successors, (54195), 49051 states have internal predecessors, (54195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:20,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49052 states to 49052 states and 54195 transitions. [2023-12-19 04:29:20,377 INFO L78 Accepts]: Start accepts. Automaton has 49052 states and 54195 transitions. Word has length 617 [2023-12-19 04:29:20,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:20,378 INFO L495 AbstractCegarLoop]: Abstraction has 49052 states and 54195 transitions. [2023-12-19 04:29:20,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:20,378 INFO L276 IsEmpty]: Start isEmpty. Operand 49052 states and 54195 transitions. [2023-12-19 04:29:20,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 703 [2023-12-19 04:29:20,406 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:20,407 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:29:20,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 04:29:20,407 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:20,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:20,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1374365083, now seen corresponding path program 1 times [2023-12-19 04:29:20,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:20,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945452259] [2023-12-19 04:29:20,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:20,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:20,867 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2023-12-19 04:29:20,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:20,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945452259] [2023-12-19 04:29:20,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945452259] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:20,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:20,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:29:20,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086143703] [2023-12-19 04:29:20,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:20,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:29:20,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:20,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:29:20,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:20,871 INFO L87 Difference]: Start difference. First operand 49052 states and 54195 transitions. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:22,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:22,752 INFO L93 Difference]: Finished difference Result 105754 states and 116620 transitions. [2023-12-19 04:29:22,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:29:22,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 702 [2023-12-19 04:29:22,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:22,846 INFO L225 Difference]: With dead ends: 105754 [2023-12-19 04:29:22,846 INFO L226 Difference]: Without dead ends: 56274 [2023-12-19 04:29:22,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:22,882 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 427 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:22,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 284 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 04:29:22,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56274 states. [2023-12-19 04:29:23,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56274 to 52019. [2023-12-19 04:29:23,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52019 states, 52018 states have (on average 1.0968703141220346) internal successors, (57057), 52018 states have internal predecessors, (57057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:23,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52019 states to 52019 states and 57057 transitions. [2023-12-19 04:29:23,746 INFO L78 Accepts]: Start accepts. Automaton has 52019 states and 57057 transitions. Word has length 702 [2023-12-19 04:29:23,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:23,747 INFO L495 AbstractCegarLoop]: Abstraction has 52019 states and 57057 transitions. [2023-12-19 04:29:23,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:23,747 INFO L276 IsEmpty]: Start isEmpty. Operand 52019 states and 57057 transitions. [2023-12-19 04:29:23,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 807 [2023-12-19 04:29:23,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:23,786 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:29:23,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 04:29:23,787 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:23,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:23,787 INFO L85 PathProgramCache]: Analyzing trace with hash 192316438, now seen corresponding path program 1 times [2023-12-19 04:29:23,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:23,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109733523] [2023-12-19 04:29:23,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:23,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:24,739 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 523 proven. 189 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-19 04:29:24,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:24,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109733523] [2023-12-19 04:29:24,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109733523] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:29:24,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358818825] [2023-12-19 04:29:24,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:24,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:29:24,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:29:24,742 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 04:29:24,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 04:29:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:25,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 04:29:25,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:29:25,583 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 523 proven. 189 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-19 04:29:25,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 04:29:26,751 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 523 proven. 189 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-19 04:29:26,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358818825] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 04:29:26,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 04:29:26,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2023-12-19 04:29:26,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286647385] [2023-12-19 04:29:26,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 04:29:26,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 04:29:26,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:26,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 04:29:26,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:29:26,755 INFO L87 Difference]: Start difference. First operand 52019 states and 57057 transitions. Second operand has 6 states, 6 states have (on average 219.66666666666666) internal successors, (1318), 6 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:31,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:31,264 INFO L93 Difference]: Finished difference Result 111712 states and 122488 transitions. [2023-12-19 04:29:31,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 04:29:31,265 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 219.66666666666666) internal successors, (1318), 6 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 806 [2023-12-19 04:29:31,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:31,369 INFO L225 Difference]: With dead ends: 111712 [2023-12-19 04:29:31,369 INFO L226 Difference]: Without dead ends: 59266 [2023-12-19 04:29:31,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1616 GetRequests, 1610 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-19 04:29:31,409 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 837 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 4379 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 4626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 4379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:31,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 846 Invalid, 4626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 4379 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-19 04:29:31,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59266 states. [2023-12-19 04:29:32,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59266 to 52443. [2023-12-19 04:29:32,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52443 states, 52442 states have (on average 1.0909766980664353) internal successors, (57213), 52442 states have internal predecessors, (57213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:32,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52443 states to 52443 states and 57213 transitions. [2023-12-19 04:29:32,218 INFO L78 Accepts]: Start accepts. Automaton has 52443 states and 57213 transitions. Word has length 806 [2023-12-19 04:29:32,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:32,218 INFO L495 AbstractCegarLoop]: Abstraction has 52443 states and 57213 transitions. [2023-12-19 04:29:32,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 219.66666666666666) internal successors, (1318), 6 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:32,219 INFO L276 IsEmpty]: Start isEmpty. Operand 52443 states and 57213 transitions. [2023-12-19 04:29:32,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2023-12-19 04:29:32,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:32,254 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:29:32,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 04:29:32,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:29:32,462 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:32,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:32,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1660624231, now seen corresponding path program 1 times [2023-12-19 04:29:32,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:32,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570138538] [2023-12-19 04:29:32,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:32,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:33,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1258 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 1014 trivial. 0 not checked. [2023-12-19 04:29:33,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:33,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570138538] [2023-12-19 04:29:33,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570138538] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:33,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:33,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:29:33,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904691090] [2023-12-19 04:29:33,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:33,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:29:33,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:33,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:29:33,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:33,115 INFO L87 Difference]: Start difference. First operand 52443 states and 57213 transitions. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:34,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:34,687 INFO L93 Difference]: Finished difference Result 111247 states and 120834 transitions. [2023-12-19 04:29:34,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:29:34,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 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 815 [2023-12-19 04:29:34,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:34,754 INFO L225 Difference]: With dead ends: 111247 [2023-12-19 04:29:34,754 INFO L226 Difference]: Without dead ends: 55829 [2023-12-19 04:29:34,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:34,915 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 449 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:34,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 706 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 04:29:34,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55829 states. [2023-12-19 04:29:35,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55829 to 53701. [2023-12-19 04:29:35,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53701 states, 53700 states have (on average 1.0778212290502793) internal successors, (57879), 53700 states have internal predecessors, (57879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:35,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53701 states to 53701 states and 57879 transitions. [2023-12-19 04:29:35,858 INFO L78 Accepts]: Start accepts. Automaton has 53701 states and 57879 transitions. Word has length 815 [2023-12-19 04:29:35,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:35,859 INFO L495 AbstractCegarLoop]: Abstraction has 53701 states and 57879 transitions. [2023-12-19 04:29:35,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:35,859 INFO L276 IsEmpty]: Start isEmpty. Operand 53701 states and 57879 transitions. [2023-12-19 04:29:35,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2023-12-19 04:29:35,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:35,886 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:29:35,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 04:29:35,886 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:35,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:35,887 INFO L85 PathProgramCache]: Analyzing trace with hash 2106022133, now seen corresponding path program 1 times [2023-12-19 04:29:35,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:35,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862045570] [2023-12-19 04:29:35,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:35,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:36,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 1025 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-12-19 04:29:36,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:36,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862045570] [2023-12-19 04:29:36,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862045570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:36,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:36,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:29:36,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510099883] [2023-12-19 04:29:36,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:36,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:29:36,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:36,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:29:36,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:29:36,771 INFO L87 Difference]: Start difference. First operand 53701 states and 57879 transitions. Second operand has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:39,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:39,090 INFO L93 Difference]: Finished difference Result 128287 states and 138198 transitions. [2023-12-19 04:29:39,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:29:39,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 863 [2023-12-19 04:29:39,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:39,213 INFO L225 Difference]: With dead ends: 128287 [2023-12-19 04:29:39,213 INFO L226 Difference]: Without dead ends: 74587 [2023-12-19 04:29:39,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:29:39,257 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 752 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 2585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:39,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 144 Invalid, 2585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 2232 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-19 04:29:39,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74587 states. [2023-12-19 04:29:40,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74587 to 72453. [2023-12-19 04:29:40,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72453 states, 72452 states have (on average 1.0766852536851985) internal successors, (78008), 72452 states have internal predecessors, (78008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:40,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72453 states to 72453 states and 78008 transitions. [2023-12-19 04:29:40,312 INFO L78 Accepts]: Start accepts. Automaton has 72453 states and 78008 transitions. Word has length 863 [2023-12-19 04:29:40,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:40,312 INFO L495 AbstractCegarLoop]: Abstraction has 72453 states and 78008 transitions. [2023-12-19 04:29:40,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:40,313 INFO L276 IsEmpty]: Start isEmpty. Operand 72453 states and 78008 transitions. [2023-12-19 04:29:40,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 935 [2023-12-19 04:29:40,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:40,350 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:29:40,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 04:29:40,350 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:40,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:40,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1969837545, now seen corresponding path program 1 times [2023-12-19 04:29:40,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:40,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213099003] [2023-12-19 04:29:40,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:40,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:41,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1478 backedges. 1147 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2023-12-19 04:29:41,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:41,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213099003] [2023-12-19 04:29:41,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213099003] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:41,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:41,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:29:41,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252702881] [2023-12-19 04:29:41,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:41,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:29:41,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:41,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:29:41,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:29:41,365 INFO L87 Difference]: Start difference. First operand 72453 states and 78008 transitions. Second operand has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:44,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:44,131 INFO L93 Difference]: Finished difference Result 156820 states and 168565 transitions. [2023-12-19 04:29:44,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:29:44,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 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 934 [2023-12-19 04:29:44,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:44,237 INFO L225 Difference]: With dead ends: 156820 [2023-12-19 04:29:44,238 INFO L226 Difference]: Without dead ends: 84368 [2023-12-19 04:29:44,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:29:44,284 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 608 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 2731 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 2979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 2731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:44,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 329 Invalid, 2979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 2731 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 04:29:44,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84368 states. [2023-12-19 04:29:45,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84368 to 80538. [2023-12-19 04:29:45,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80538 states, 80537 states have (on average 1.0741646696549412) internal successors, (86510), 80537 states have internal predecessors, (86510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:45,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80538 states to 80538 states and 86510 transitions. [2023-12-19 04:29:45,386 INFO L78 Accepts]: Start accepts. Automaton has 80538 states and 86510 transitions. Word has length 934 [2023-12-19 04:29:45,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:45,386 INFO L495 AbstractCegarLoop]: Abstraction has 80538 states and 86510 transitions. [2023-12-19 04:29:45,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:45,386 INFO L276 IsEmpty]: Start isEmpty. Operand 80538 states and 86510 transitions. [2023-12-19 04:29:45,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 936 [2023-12-19 04:29:45,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:45,426 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:29:45,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 04:29:45,427 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:45,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:45,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1235608853, now seen corresponding path program 1 times [2023-12-19 04:29:45,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:45,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056650892] [2023-12-19 04:29:45,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:45,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:45,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1509 backedges. 900 proven. 0 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2023-12-19 04:29:45,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:45,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056650892] [2023-12-19 04:29:45,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056650892] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:45,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:45,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:29:45,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65885245] [2023-12-19 04:29:45,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:45,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:29:45,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:45,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:29:45,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:45,860 INFO L87 Difference]: Start difference. First operand 80538 states and 86510 transitions. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:47,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:47,669 INFO L93 Difference]: Finished difference Result 166184 states and 178504 transitions. [2023-12-19 04:29:47,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:29:47,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 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 935 [2023-12-19 04:29:47,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:47,764 INFO L225 Difference]: With dead ends: 166184 [2023-12-19 04:29:47,764 INFO L226 Difference]: Without dead ends: 85647 [2023-12-19 04:29:47,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:47,810 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 484 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:47,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 204 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 04:29:47,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85647 states. [2023-12-19 04:29:49,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85647 to 81387. [2023-12-19 04:29:49,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81387 states, 81386 states have (on average 1.0720639913498635) internal successors, (87251), 81386 states have internal predecessors, (87251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:49,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81387 states to 81387 states and 87251 transitions. [2023-12-19 04:29:49,201 INFO L78 Accepts]: Start accepts. Automaton has 81387 states and 87251 transitions. Word has length 935 [2023-12-19 04:29:49,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:49,201 INFO L495 AbstractCegarLoop]: Abstraction has 81387 states and 87251 transitions. [2023-12-19 04:29:49,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:49,201 INFO L276 IsEmpty]: Start isEmpty. Operand 81387 states and 87251 transitions. [2023-12-19 04:29:49,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 967 [2023-12-19 04:29:49,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:49,240 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:29:49,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 04:29:49,240 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:49,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:49,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1579401761, now seen corresponding path program 1 times [2023-12-19 04:29:49,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:49,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840813657] [2023-12-19 04:29:49,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:49,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:49,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1808 backedges. 1530 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2023-12-19 04:29:49,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:49,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840813657] [2023-12-19 04:29:49,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840813657] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:49,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:49,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:29:49,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485568622] [2023-12-19 04:29:49,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:49,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:29:49,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:49,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:29:49,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:29:49,977 INFO L87 Difference]: Start difference. First operand 81387 states and 87251 transitions. Second operand has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:52,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:52,871 INFO L93 Difference]: Finished difference Result 192147 states and 205626 transitions. [2023-12-19 04:29:52,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:29:52,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 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 966 [2023-12-19 04:29:52,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:53,063 INFO L225 Difference]: With dead ends: 192147 [2023-12-19 04:29:53,064 INFO L226 Difference]: Without dead ends: 109911 [2023-12-19 04:29:53,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:29:53,128 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 521 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2293 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 2628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 2293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:53,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 178 Invalid, 2628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 2293 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 04:29:53,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109911 states. [2023-12-19 04:29:54,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109911 to 103956. [2023-12-19 04:29:54,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103956 states, 103955 states have (on average 1.0664806887595595) internal successors, (110866), 103955 states have internal predecessors, (110866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:54,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103956 states to 103956 states and 110866 transitions. [2023-12-19 04:29:54,653 INFO L78 Accepts]: Start accepts. Automaton has 103956 states and 110866 transitions. Word has length 966 [2023-12-19 04:29:54,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:54,654 INFO L495 AbstractCegarLoop]: Abstraction has 103956 states and 110866 transitions. [2023-12-19 04:29:54,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:54,654 INFO L276 IsEmpty]: Start isEmpty. Operand 103956 states and 110866 transitions. [2023-12-19 04:29:54,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 972 [2023-12-19 04:29:54,720 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:54,721 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:29:54,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 04:29:54,721 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:54,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:54,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1964852965, now seen corresponding path program 1 times [2023-12-19 04:29:54,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:54,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33011767] [2023-12-19 04:29:54,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:54,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:55,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:55,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1833 backedges. 1545 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-19 04:29:55,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:55,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33011767] [2023-12-19 04:29:55,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33011767] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:55,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:55,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:29:55,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568439964] [2023-12-19 04:29:55,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:55,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:29:55,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:55,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:29:55,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:29:55,675 INFO L87 Difference]: Start difference. First operand 103956 states and 110866 transitions. Second operand has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:58,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:58,808 INFO L93 Difference]: Finished difference Result 232171 states and 247510 transitions. [2023-12-19 04:29:58,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:29:58,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 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 971 [2023-12-19 04:29:58,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:58,976 INFO L225 Difference]: With dead ends: 232171 [2023-12-19 04:29:58,976 INFO L226 Difference]: Without dead ends: 128216 [2023-12-19 04:29:59,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:29:59,028 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 539 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 2169 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 2583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 2169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:59,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 155 Invalid, 2583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 2169 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 04:29:59,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128216 states. [2023-12-19 04:30:00,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128216 to 103531. [2023-12-19 04:30:00,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103531 states, 103530 states have (on average 1.0676808654496281) internal successors, (110537), 103530 states have internal predecessors, (110537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:00,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103531 states to 103531 states and 110537 transitions. [2023-12-19 04:30:00,701 INFO L78 Accepts]: Start accepts. Automaton has 103531 states and 110537 transitions. Word has length 971 [2023-12-19 04:30:00,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:00,702 INFO L495 AbstractCegarLoop]: Abstraction has 103531 states and 110537 transitions. [2023-12-19 04:30:00,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:00,702 INFO L276 IsEmpty]: Start isEmpty. Operand 103531 states and 110537 transitions. [2023-12-19 04:30:01,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1059 [2023-12-19 04:30:01,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:01,049 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:30:01,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 04:30:01,049 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:01,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:01,050 INFO L85 PathProgramCache]: Analyzing trace with hash 355765621, now seen corresponding path program 1 times [2023-12-19 04:30:01,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:01,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928752841] [2023-12-19 04:30:01,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:01,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:02,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2119 backedges. 1765 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2023-12-19 04:30:02,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:02,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928752841] [2023-12-19 04:30:02,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928752841] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:30:02,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:30:02,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 04:30:02,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783234843] [2023-12-19 04:30:02,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:02,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 04:30:02,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:02,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 04:30:02,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:30:02,199 INFO L87 Difference]: Start difference. First operand 103531 states and 110537 transitions. Second operand has 5 states, 5 states have (on average 157.8) internal successors, (789), 5 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:06,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:30:06,052 INFO L93 Difference]: Finished difference Result 241980 states and 258524 transitions. [2023-12-19 04:30:06,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 04:30:06,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 157.8) internal successors, (789), 5 states have internal predecessors, (789), 0 states have call successors, (0), 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 1058 [2023-12-19 04:30:06,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:30:06,509 INFO L225 Difference]: With dead ends: 241980 [2023-12-19 04:30:06,509 INFO L226 Difference]: Without dead ends: 138450 [2023-12-19 04:30:06,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:30:06,565 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 1276 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2648 mSolverCounterSat, 495 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1276 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 3143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 495 IncrementalHoareTripleChecker+Valid, 2648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:30:06,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1276 Valid, 169 Invalid, 3143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [495 Valid, 2648 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 04:30:06,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138450 states. [2023-12-19 04:30:08,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138450 to 106935. [2023-12-19 04:30:08,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106935 states, 106934 states have (on average 1.0675743916808498) internal successors, (114160), 106934 states have internal predecessors, (114160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:08,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106935 states to 106935 states and 114160 transitions. [2023-12-19 04:30:08,270 INFO L78 Accepts]: Start accepts. Automaton has 106935 states and 114160 transitions. Word has length 1058 [2023-12-19 04:30:08,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:08,271 INFO L495 AbstractCegarLoop]: Abstraction has 106935 states and 114160 transitions. [2023-12-19 04:30:08,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 157.8) internal successors, (789), 5 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:08,271 INFO L276 IsEmpty]: Start isEmpty. Operand 106935 states and 114160 transitions. [2023-12-19 04:30:08,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1065 [2023-12-19 04:30:08,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:08,339 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:30:08,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-19 04:30:08,339 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:08,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:08,340 INFO L85 PathProgramCache]: Analyzing trace with hash 551452795, now seen corresponding path program 1 times [2023-12-19 04:30:08,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:08,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655739585] [2023-12-19 04:30:08,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:08,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:09,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2030 backedges. 1194 proven. 0 refuted. 0 times theorem prover too weak. 836 trivial. 0 not checked. [2023-12-19 04:30:09,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:09,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655739585] [2023-12-19 04:30:09,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655739585] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:30:09,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:30:09,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:30:09,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504957483] [2023-12-19 04:30:09,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:09,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:30:09,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:09,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:30:09,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:30:09,204 INFO L87 Difference]: Start difference. First operand 106935 states and 114160 transitions. Second operand has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 2 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:10,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:30:10,382 INFO L93 Difference]: Finished difference Result 194258 states and 207126 transitions. [2023-12-19 04:30:10,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:30:10,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 2 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1064 [2023-12-19 04:30:10,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:30:10,686 INFO L225 Difference]: With dead ends: 194258 [2023-12-19 04:30:10,687 INFO L226 Difference]: Without dead ends: 87749 [2023-12-19 04:30:10,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:30:10,721 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 463 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:30:10,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 67 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 04:30:10,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87749 states. [2023-12-19 04:30:11,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87749 to 86897. [2023-12-19 04:30:11,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86897 states, 86896 states have (on average 1.0646519977904623) internal successors, (92514), 86896 states have internal predecessors, (92514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:11,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86897 states to 86897 states and 92514 transitions. [2023-12-19 04:30:11,804 INFO L78 Accepts]: Start accepts. Automaton has 86897 states and 92514 transitions. Word has length 1064 [2023-12-19 04:30:11,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:11,805 INFO L495 AbstractCegarLoop]: Abstraction has 86897 states and 92514 transitions. [2023-12-19 04:30:11,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 2 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:11,805 INFO L276 IsEmpty]: Start isEmpty. Operand 86897 states and 92514 transitions. [2023-12-19 04:30:12,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1151 [2023-12-19 04:30:12,108 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:12,109 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:30:12,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-19 04:30:12,109 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:12,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:12,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1772877476, now seen corresponding path program 1 times [2023-12-19 04:30:12,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:12,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559446363] [2023-12-19 04:30:12,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:12,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:12,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2618 backedges. 1702 proven. 0 refuted. 0 times theorem prover too weak. 916 trivial. 0 not checked. [2023-12-19 04:30:12,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:12,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559446363] [2023-12-19 04:30:12,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559446363] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:30:12,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:30:12,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:30:12,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076570354] [2023-12-19 04:30:12,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:12,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:30:12,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:12,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:30:12,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:30:12,874 INFO L87 Difference]: Start difference. First operand 86897 states and 92514 transitions. Second operand has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:14,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:30:14,612 INFO L93 Difference]: Finished difference Result 181466 states and 193205 transitions. [2023-12-19 04:30:14,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:30:14,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 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 1150 [2023-12-19 04:30:14,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:30:14,731 INFO L225 Difference]: With dead ends: 181466 [2023-12-19 04:30:14,731 INFO L226 Difference]: Without dead ends: 94995 [2023-12-19 04:30:14,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:30:14,798 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 318 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:30:14,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 193 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 04:30:14,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94995 states. [2023-12-19 04:30:15,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94995 to 93291. [2023-12-19 04:30:15,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93291 states, 93290 states have (on average 1.0635545074498876) internal successors, (99219), 93290 states have internal predecessors, (99219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:16,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93291 states to 93291 states and 99219 transitions. [2023-12-19 04:30:16,107 INFO L78 Accepts]: Start accepts. Automaton has 93291 states and 99219 transitions. Word has length 1150 [2023-12-19 04:30:16,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:16,108 INFO L495 AbstractCegarLoop]: Abstraction has 93291 states and 99219 transitions. [2023-12-19 04:30:16,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:16,108 INFO L276 IsEmpty]: Start isEmpty. Operand 93291 states and 99219 transitions. [2023-12-19 04:30:16,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1254 [2023-12-19 04:30:16,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:16,201 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:30:16,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-19 04:30:16,201 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:16,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:16,202 INFO L85 PathProgramCache]: Analyzing trace with hash 2075727584, now seen corresponding path program 1 times [2023-12-19 04:30:16,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:16,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336058668] [2023-12-19 04:30:16,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:16,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:17,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2636 backedges. 1557 proven. 0 refuted. 0 times theorem prover too weak. 1079 trivial. 0 not checked. [2023-12-19 04:30:17,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:17,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336058668] [2023-12-19 04:30:17,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336058668] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:30:17,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:30:17,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:30:17,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063164743] [2023-12-19 04:30:17,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:17,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:30:17,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:17,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:30:17,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:30:17,283 INFO L87 Difference]: Start difference. First operand 93291 states and 99219 transitions. Second operand has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:19,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:30:19,210 INFO L93 Difference]: Finished difference Result 201504 states and 214156 transitions. [2023-12-19 04:30:19,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:30:19,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 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 1253 [2023-12-19 04:30:19,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:30:19,346 INFO L225 Difference]: With dead ends: 201504 [2023-12-19 04:30:19,347 INFO L226 Difference]: Without dead ends: 108639 [2023-12-19 04:30:19,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:30:19,403 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 325 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:30:19,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 654 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 04:30:19,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108639 states. [2023-12-19 04:30:20,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108639 to 105199. [2023-12-19 04:30:20,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105199 states, 105198 states have (on average 1.0589459875663036) internal successors, (111399), 105198 states have internal predecessors, (111399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:20,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105199 states to 105199 states and 111399 transitions. [2023-12-19 04:30:20,779 INFO L78 Accepts]: Start accepts. Automaton has 105199 states and 111399 transitions. Word has length 1253 [2023-12-19 04:30:20,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:20,779 INFO L495 AbstractCegarLoop]: Abstraction has 105199 states and 111399 transitions. [2023-12-19 04:30:20,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:20,780 INFO L276 IsEmpty]: Start isEmpty. Operand 105199 states and 111399 transitions. [2023-12-19 04:30:21,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1257 [2023-12-19 04:30:21,082 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:21,083 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:30:21,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-19 04:30:21,083 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:21,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:21,093 INFO L85 PathProgramCache]: Analyzing trace with hash 749882944, now seen corresponding path program 1 times [2023-12-19 04:30:21,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:21,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091779491] [2023-12-19 04:30:21,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:21,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:22,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2208 backedges. 1178 proven. 0 refuted. 0 times theorem prover too weak. 1030 trivial. 0 not checked. [2023-12-19 04:30:22,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:22,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091779491] [2023-12-19 04:30:22,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091779491] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:30:22,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:30:22,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:30:22,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242170806] [2023-12-19 04:30:22,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:22,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:30:22,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:22,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:30:22,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:30:22,210 INFO L87 Difference]: Start difference. First operand 105199 states and 111399 transitions. Second operand has 4 states, 4 states have (on average 173.25) internal successors, (693), 4 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:25,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:30:25,341 INFO L93 Difference]: Finished difference Result 228717 states and 241780 transitions. [2023-12-19 04:30:25,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:30:25,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 173.25) internal successors, (693), 4 states have internal predecessors, (693), 0 states have call successors, (0), 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 1256 [2023-12-19 04:30:25,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:30:25,505 INFO L225 Difference]: With dead ends: 228717 [2023-12-19 04:30:25,505 INFO L226 Difference]: Without dead ends: 122669 [2023-12-19 04:30:25,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:30:25,563 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 576 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 2225 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 2652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 2225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:30:25,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 96 Invalid, 2652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 2225 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 04:30:25,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122669 states. [2023-12-19 04:30:26,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122669 to 92001. [2023-12-19 04:30:26,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92001 states, 92000 states have (on average 1.0582608695652174) internal successors, (97360), 92000 states have internal predecessors, (97360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:26,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92001 states to 92001 states and 97360 transitions. [2023-12-19 04:30:26,934 INFO L78 Accepts]: Start accepts. Automaton has 92001 states and 97360 transitions. Word has length 1256 [2023-12-19 04:30:26,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:26,934 INFO L495 AbstractCegarLoop]: Abstraction has 92001 states and 97360 transitions. [2023-12-19 04:30:26,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.25) internal successors, (693), 4 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:26,935 INFO L276 IsEmpty]: Start isEmpty. Operand 92001 states and 97360 transitions. [2023-12-19 04:30:27,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1369 [2023-12-19 04:30:27,000 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:27,001 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:30:27,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-19 04:30:27,002 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:27,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:27,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1767938796, now seen corresponding path program 1 times [2023-12-19 04:30:27,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:27,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976647182] [2023-12-19 04:30:27,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:27,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:28,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3397 backedges. 1835 proven. 0 refuted. 0 times theorem prover too weak. 1562 trivial. 0 not checked. [2023-12-19 04:30:28,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:28,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976647182] [2023-12-19 04:30:28,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976647182] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:30:28,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:30:28,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:30:28,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867192616] [2023-12-19 04:30:28,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:28,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:30:28,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:28,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:30:28,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:30:28,163 INFO L87 Difference]: Start difference. First operand 92001 states and 97360 transitions. Second operand has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:30,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:30:30,175 INFO L93 Difference]: Finished difference Result 177616 states and 187387 transitions. [2023-12-19 04:30:30,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:30:30,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1368 [2023-12-19 04:30:30,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:30:30,176 INFO L225 Difference]: With dead ends: 177616 [2023-12-19 04:30:30,177 INFO L226 Difference]: Without dead ends: 0 [2023-12-19 04:30:30,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:30:30,243 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 338 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 1301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:30:30,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 602 Invalid, 1301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 04:30:30,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-19 04:30:30,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-19 04:30:30,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:30,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-19 04:30:30,247 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1368 [2023-12-19 04:30:30,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:30,249 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-19 04:30:30,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:30,250 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-19 04:30:30,250 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-19 04:30:30,252 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 04:30:30,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-19 04:30:30,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.