/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 17:29:24,552 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 17:29:24,603 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 17:29:24,606 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 17:29:24,607 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 17:29:24,627 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 17:29:24,627 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 17:29:24,627 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 17:29:24,628 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 17:29:24,628 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 17:29:24,628 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 17:29:24,628 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 17:29:24,629 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 17:29:24,629 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 17:29:24,629 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 17:29:24,630 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 17:29:24,630 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 17:29:24,630 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 17:29:24,630 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 17:29:24,630 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 17:29:24,631 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 17:29:24,631 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 17:29:24,631 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 17:29:24,631 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 17:29:24,632 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 17:29:24,632 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 17:29:24,632 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 17:29:24,632 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 17:29:24,633 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 17:29:24,633 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 17:29:24,633 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 17:29:24,633 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 17:29:24,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:29:24,634 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 17:29:24,634 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 17:29:24,634 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 17:29:24,634 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 17:29:24,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 17:29:24,635 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 17:29:24,635 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 17:29:24,635 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 17:29:24,636 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 17:29:24,638 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 17:29:24,638 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 17:29:24,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 17:29:24,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 17:29:24,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 17:29:24,842 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 17:29:24,842 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 17:29:24,843 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label11.c [2023-12-20 17:29:25,930 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 17:29:26,292 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 17:29:26,293 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label11.c [2023-12-20 17:29:26,313 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57568d0f8/b857f11af6584057984389253a4d6f41/FLAG266b12751 [2023-12-20 17:29:26,327 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57568d0f8/b857f11af6584057984389253a4d6f41 [2023-12-20 17:29:26,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 17:29:26,330 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 17:29:26,332 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 17:29:26,332 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 17:29:26,336 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 17:29:26,336 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:29:26" (1/1) ... [2023-12-20 17:29:26,337 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d7837c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:29:26, skipping insertion in model container [2023-12-20 17:29:26,337 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:29:26" (1/1) ... [2023-12-20 17:29:26,418 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 17:29:26,598 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_label11.c[8243,8256] [2023-12-20 17:29:26,979 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:29:26,987 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 17:29:27,010 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_label11.c[8243,8256] [2023-12-20 17:29:27,207 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:29:27,221 INFO L206 MainTranslator]: Completed translation [2023-12-20 17:29:27,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:29:27 WrapperNode [2023-12-20 17:29:27,223 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 17:29:27,225 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 17:29:27,225 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 17:29:27,225 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 17:29:27,230 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:29:27" (1/1) ... [2023-12-20 17:29:27,275 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:29:27" (1/1) ... [2023-12-20 17:29:27,484 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2023-12-20 17:29:27,485 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 17:29:27,486 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 17:29:27,486 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 17:29:27,486 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 17:29:27,494 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:29:27" (1/1) ... [2023-12-20 17:29:27,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:29:27" (1/1) ... [2023-12-20 17:29:27,524 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:29:27" (1/1) ... [2023-12-20 17:29:27,694 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]. [2023-12-20 17:29:27,695 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:29:27" (1/1) ... [2023-12-20 17:29:27,695 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:29:27" (1/1) ... [2023-12-20 17:29:27,792 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:29:27" (1/1) ... [2023-12-20 17:29:27,819 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:29:27" (1/1) ... [2023-12-20 17:29:27,841 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:29:27" (1/1) ... [2023-12-20 17:29:27,855 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:29:27" (1/1) ... [2023-12-20 17:29:27,888 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 17:29:27,889 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 17:29:27,889 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 17:29:27,889 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 17:29:27,890 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:29:27" (1/1) ... [2023-12-20 17:29:27,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:29:27,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:29:27,919 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) [2023-12-20 17:29:27,932 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 [2023-12-20 17:29:27,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 17:29:27,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 17:29:27,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 17:29:27,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 17:29:28,001 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 17:29:28,003 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 17:29:30,398 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 17:29:30,428 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 17:29:30,429 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 17:29:30,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:29:30 BoogieIcfgContainer [2023-12-20 17:29:30,429 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 17:29:30,430 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 17:29:30,431 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 17:29:30,433 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 17:29:30,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 05:29:26" (1/3) ... [2023-12-20 17:29:30,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b173215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:29:30, skipping insertion in model container [2023-12-20 17:29:30,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:29:27" (2/3) ... [2023-12-20 17:29:30,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b173215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:29:30, skipping insertion in model container [2023-12-20 17:29:30,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:29:30" (3/3) ... [2023-12-20 17:29:30,435 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label11.c [2023-12-20 17:29:30,447 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 17:29:30,447 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 17:29:30,485 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 17:29:30,490 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;@9fc2a60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 17:29:30,490 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 17:29:30,496 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) [2023-12-20 17:29:30,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 17:29:30,502 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:30,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:29:30,503 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:30,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:30,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1068990856, now seen corresponding path program 1 times [2023-12-20 17:29:30,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:30,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421379073] [2023-12-20 17:29:30,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:30,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:30,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:29:30,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:30,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421379073] [2023-12-20 17:29:30,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421379073] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:29:30,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:29:30,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:29:30,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516329474] [2023-12-20 17:29:30,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:29:30,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 17:29:30,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:30,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 17:29:30,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 17:29:30,668 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 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:30,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:30,727 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2023-12-20 17:29:30,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 17:29:30,732 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-20 17:29:30,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:30,743 INFO L225 Difference]: With dead ends: 1055 [2023-12-20 17:29:30,743 INFO L226 Difference]: Without dead ends: 526 [2023-12-20 17:29:30,747 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 [2023-12-20 17:29:30,749 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 [2023-12-20 17:29:30,750 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] [2023-12-20 17:29:30,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-20 17:29:30,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2023-12-20 17:29:30,798 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) [2023-12-20 17:29:30,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2023-12-20 17:29:30,800 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 55 [2023-12-20 17:29:30,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:30,800 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2023-12-20 17:29:30,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:30,800 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2023-12-20 17:29:30,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 17:29:30,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:30,801 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:29:30,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 17:29:30,802 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:30,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:30,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1136734266, now seen corresponding path program 1 times [2023-12-20 17:29:30,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:30,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900178362] [2023-12-20 17:29:30,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:30,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:30,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:30,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:29:30,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:30,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900178362] [2023-12-20 17:29:30,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900178362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:29:30,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:29:30,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:29:30,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990927222] [2023-12-20 17:29:30,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:29:30,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:29:30,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:30,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:29:30,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:29:30,970 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:33,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:33,040 INFO L93 Difference]: Finished difference Result 1499 states and 2693 transitions. [2023-12-20 17:29:33,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:29:33,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-20 17:29:33,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:33,049 INFO L225 Difference]: With dead ends: 1499 [2023-12-20 17:29:33,049 INFO L226 Difference]: Without dead ends: 974 [2023-12-20 17:29:33,051 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 [2023-12-20 17:29:33,052 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 418 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:33,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 495 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 17:29:33,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2023-12-20 17:29:33,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 971. [2023-12-20 17:29:33,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5082474226804123) internal successors, (1463), 970 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:33,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1463 transitions. [2023-12-20 17:29:33,088 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1463 transitions. Word has length 55 [2023-12-20 17:29:33,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:33,088 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1463 transitions. [2023-12-20 17:29:33,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:33,089 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1463 transitions. [2023-12-20 17:29:33,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-20 17:29:33,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:33,091 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, 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] [2023-12-20 17:29:33,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 17:29:33,092 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:33,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:33,092 INFO L85 PathProgramCache]: Analyzing trace with hash -575186586, now seen corresponding path program 1 times [2023-12-20 17:29:33,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:33,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787623252] [2023-12-20 17:29:33,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:33,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:33,315 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:29:33,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:33,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787623252] [2023-12-20 17:29:33,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787623252] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:29:33,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:29:33,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:29:33,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803177359] [2023-12-20 17:29:33,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:29:33,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:29:33,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:33,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:29:33,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:29:33,319 INFO L87 Difference]: Start difference. First operand 971 states and 1463 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:35,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:35,311 INFO L93 Difference]: Finished difference Result 2813 states and 4241 transitions. [2023-12-20 17:29:35,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:29:35,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2023-12-20 17:29:35,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:35,318 INFO L225 Difference]: With dead ends: 2813 [2023-12-20 17:29:35,318 INFO L226 Difference]: Without dead ends: 1843 [2023-12-20 17:29:35,319 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 [2023-12-20 17:29:35,320 INFO L413 NwaCegarLoop]: 851 mSDtfsCounter, 435 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:35,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 918 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 17:29:35,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2023-12-20 17:29:35,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1841. [2023-12-20 17:29:35,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.3603260869565217) internal successors, (2503), 1840 states have internal predecessors, (2503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:35,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2503 transitions. [2023-12-20 17:29:35,345 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2503 transitions. Word has length 125 [2023-12-20 17:29:35,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:35,346 INFO L495 AbstractCegarLoop]: Abstraction has 1841 states and 2503 transitions. [2023-12-20 17:29:35,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:35,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2503 transitions. [2023-12-20 17:29:35,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-20 17:29:35,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:35,349 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, 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] [2023-12-20 17:29:35,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 17:29:35,350 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:35,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:35,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1121406025, now seen corresponding path program 1 times [2023-12-20 17:29:35,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:35,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034191726] [2023-12-20 17:29:35,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:35,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:35,479 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:29:35,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:35,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034191726] [2023-12-20 17:29:35,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034191726] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:29:35,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:29:35,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:29:35,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281933100] [2023-12-20 17:29:35,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:29:35,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:29:35,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:35,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:29:35,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:29:35,482 INFO L87 Difference]: Start difference. First operand 1841 states and 2503 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:37,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:37,224 INFO L93 Difference]: Finished difference Result 5394 states and 7325 transitions. [2023-12-20 17:29:37,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:29:37,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2023-12-20 17:29:37,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:37,239 INFO L225 Difference]: With dead ends: 5394 [2023-12-20 17:29:37,239 INFO L226 Difference]: Without dead ends: 2700 [2023-12-20 17:29:37,243 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 [2023-12-20 17:29:37,244 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 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 [2023-12-20 17:29:37,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 17:29:37,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2023-12-20 17:29:37,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 2700. [2023-12-20 17:29:37,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2700 states, 2699 states have (on average 1.1919229344201556) internal successors, (3217), 2699 states have internal predecessors, (3217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:37,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2700 states to 2700 states and 3217 transitions. [2023-12-20 17:29:37,289 INFO L78 Accepts]: Start accepts. Automaton has 2700 states and 3217 transitions. Word has length 147 [2023-12-20 17:29:37,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:37,290 INFO L495 AbstractCegarLoop]: Abstraction has 2700 states and 3217 transitions. [2023-12-20 17:29:37,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:37,290 INFO L276 IsEmpty]: Start isEmpty. Operand 2700 states and 3217 transitions. [2023-12-20 17:29:37,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-20 17:29:37,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:37,293 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, 3, 3, 3, 3, 3, 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] [2023-12-20 17:29:37,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 17:29:37,294 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:37,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:37,294 INFO L85 PathProgramCache]: Analyzing trace with hash -2101488803, now seen corresponding path program 1 times [2023-12-20 17:29:37,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:37,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093800655] [2023-12-20 17:29:37,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:37,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:37,519 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:29:37,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:37,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093800655] [2023-12-20 17:29:37,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093800655] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:29:37,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:29:37,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:29:37,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870566236] [2023-12-20 17:29:37,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:29:37,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:29:37,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:37,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:29:37,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:29:37,527 INFO L87 Difference]: Start difference. First operand 2700 states and 3217 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) [2023-12-20 17:29:39,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:39,168 INFO L93 Difference]: Finished difference Result 7107 states and 8597 transitions. [2023-12-20 17:29:39,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:29:39,169 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 207 [2023-12-20 17:29:39,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:39,182 INFO L225 Difference]: With dead ends: 7107 [2023-12-20 17:29:39,182 INFO L226 Difference]: Without dead ends: 4408 [2023-12-20 17:29:39,187 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 [2023-12-20 17:29:39,190 INFO L413 NwaCegarLoop]: 724 mSDtfsCounter, 496 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:39,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 781 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 17:29:39,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4408 states. [2023-12-20 17:29:39,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4408 to 4408. [2023-12-20 17:29:39,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4408 states, 4407 states have (on average 1.1706376219650556) internal successors, (5159), 4407 states have internal predecessors, (5159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:39,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4408 states to 4408 states and 5159 transitions. [2023-12-20 17:29:39,248 INFO L78 Accepts]: Start accepts. Automaton has 4408 states and 5159 transitions. Word has length 207 [2023-12-20 17:29:39,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:39,248 INFO L495 AbstractCegarLoop]: Abstraction has 4408 states and 5159 transitions. [2023-12-20 17:29:39,248 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) [2023-12-20 17:29:39,249 INFO L276 IsEmpty]: Start isEmpty. Operand 4408 states and 5159 transitions. [2023-12-20 17:29:39,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-20 17:29:39,252 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:39,252 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:29:39,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 17:29:39,252 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:39,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:39,253 INFO L85 PathProgramCache]: Analyzing trace with hash 876003032, now seen corresponding path program 1 times [2023-12-20 17:29:39,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:39,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076036934] [2023-12-20 17:29:39,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:39,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:39,411 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-20 17:29:39,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:39,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076036934] [2023-12-20 17:29:39,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076036934] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:29:39,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:29:39,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:29:39,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59959527] [2023-12-20 17:29:39,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:29:39,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:29:39,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:39,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:29:39,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:29:39,414 INFO L87 Difference]: Start difference. First operand 4408 states and 5159 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:41,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:41,097 INFO L93 Difference]: Finished difference Result 10935 states and 12969 transitions. [2023-12-20 17:29:41,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:29:41,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 209 [2023-12-20 17:29:41,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:41,123 INFO L225 Difference]: With dead ends: 10935 [2023-12-20 17:29:41,123 INFO L226 Difference]: Without dead ends: 6527 [2023-12-20 17:29:41,128 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 [2023-12-20 17:29:41,129 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 394 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:41,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 442 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 17:29:41,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6527 states. [2023-12-20 17:29:41,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6527 to 4381. [2023-12-20 17:29:41,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4381 states, 4380 states have (on average 1.1684931506849314) internal successors, (5118), 4380 states have internal predecessors, (5118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:41,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4381 states to 4381 states and 5118 transitions. [2023-12-20 17:29:41,201 INFO L78 Accepts]: Start accepts. Automaton has 4381 states and 5118 transitions. Word has length 209 [2023-12-20 17:29:41,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:41,201 INFO L495 AbstractCegarLoop]: Abstraction has 4381 states and 5118 transitions. [2023-12-20 17:29:41,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:41,202 INFO L276 IsEmpty]: Start isEmpty. Operand 4381 states and 5118 transitions. [2023-12-20 17:29:41,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-12-20 17:29:41,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:41,205 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:29:41,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 17:29:41,205 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:41,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:41,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1438261346, now seen corresponding path program 1 times [2023-12-20 17:29:41,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:41,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055205184] [2023-12-20 17:29:41,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:41,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:41,389 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-20 17:29:41,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:41,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055205184] [2023-12-20 17:29:41,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055205184] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:29:41,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:29:41,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:29:41,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923570138] [2023-12-20 17:29:41,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:29:41,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:29:41,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:41,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:29:41,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:29:41,391 INFO L87 Difference]: Start difference. First operand 4381 states and 5118 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:43,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:43,097 INFO L93 Difference]: Finished difference Result 10044 states and 11705 transitions. [2023-12-20 17:29:43,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:29:43,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 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 275 [2023-12-20 17:29:43,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:43,111 INFO L225 Difference]: With dead ends: 10044 [2023-12-20 17:29:43,111 INFO L226 Difference]: Without dead ends: 5664 [2023-12-20 17:29:43,116 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 [2023-12-20 17:29:43,117 INFO L413 NwaCegarLoop]: 831 mSDtfsCounter, 380 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:43,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 891 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 17:29:43,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5664 states. [2023-12-20 17:29:43,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5664 to 5233. [2023-12-20 17:29:43,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5233 states, 5232 states have (on average 1.1588302752293578) internal successors, (6063), 5232 states have internal predecessors, (6063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:43,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 6063 transitions. [2023-12-20 17:29:43,187 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 6063 transitions. Word has length 275 [2023-12-20 17:29:43,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:43,188 INFO L495 AbstractCegarLoop]: Abstraction has 5233 states and 6063 transitions. [2023-12-20 17:29:43,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:43,188 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 6063 transitions. [2023-12-20 17:29:43,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2023-12-20 17:29:43,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:43,192 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, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:29:43,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 17:29:43,192 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:43,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:43,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1891416827, now seen corresponding path program 1 times [2023-12-20 17:29:43,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:43,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067799394] [2023-12-20 17:29:43,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:43,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:43,508 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-20 17:29:43,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:43,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067799394] [2023-12-20 17:29:43,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067799394] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:29:43,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:29:43,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:29:43,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537059326] [2023-12-20 17:29:43,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:29:43,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:29:43,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:43,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:29:43,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:29:43,511 INFO L87 Difference]: Start difference. First operand 5233 states and 6063 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) [2023-12-20 17:29:45,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:45,555 INFO L93 Difference]: Finished difference Result 13048 states and 15221 transitions. [2023-12-20 17:29:45,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:29:45,557 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 [2023-12-20 17:29:45,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:45,576 INFO L225 Difference]: With dead ends: 13048 [2023-12-20 17:29:45,576 INFO L226 Difference]: Without dead ends: 6941 [2023-12-20 17:29:45,581 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 [2023-12-20 17:29:45,581 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 493 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:45,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 627 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 17:29:45,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6941 states. [2023-12-20 17:29:45,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6941 to 6511. [2023-12-20 17:29:45,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6511 states, 6510 states have (on average 1.152073732718894) internal successors, (7500), 6510 states have internal predecessors, (7500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:45,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6511 states to 6511 states and 7500 transitions. [2023-12-20 17:29:45,681 INFO L78 Accepts]: Start accepts. Automaton has 6511 states and 7500 transitions. Word has length 287 [2023-12-20 17:29:45,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:45,681 INFO L495 AbstractCegarLoop]: Abstraction has 6511 states and 7500 transitions. [2023-12-20 17:29:45,682 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) [2023-12-20 17:29:45,682 INFO L276 IsEmpty]: Start isEmpty. Operand 6511 states and 7500 transitions. [2023-12-20 17:29:45,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2023-12-20 17:29:45,685 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:45,685 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, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:29:45,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 17:29:45,685 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:45,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:45,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1122784544, now seen corresponding path program 1 times [2023-12-20 17:29:45,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:45,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884018385] [2023-12-20 17:29:45,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:45,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:45,922 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-20 17:29:45,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:45,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884018385] [2023-12-20 17:29:45,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884018385] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:29:45,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:29:45,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:29:45,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117484967] [2023-12-20 17:29:45,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:29:45,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:29:45,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:45,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:29:45,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:29:45,924 INFO L87 Difference]: Start difference. First operand 6511 states and 7500 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:47,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:47,474 INFO L93 Difference]: Finished difference Result 16009 states and 18476 transitions. [2023-12-20 17:29:47,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:29:47,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 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 310 [2023-12-20 17:29:47,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:47,490 INFO L225 Difference]: With dead ends: 16009 [2023-12-20 17:29:47,491 INFO L226 Difference]: Without dead ends: 9499 [2023-12-20 17:29:47,495 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 [2023-12-20 17:29:47,495 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 415 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:47,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 335 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 1222 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 17:29:47,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9499 states. [2023-12-20 17:29:47,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9499 to 8643. [2023-12-20 17:29:47,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8643 states, 8642 states have (on average 1.1545938440175885) internal successors, (9978), 8642 states have internal predecessors, (9978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:47,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8643 states to 8643 states and 9978 transitions. [2023-12-20 17:29:47,580 INFO L78 Accepts]: Start accepts. Automaton has 8643 states and 9978 transitions. Word has length 310 [2023-12-20 17:29:47,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:47,581 INFO L495 AbstractCegarLoop]: Abstraction has 8643 states and 9978 transitions. [2023-12-20 17:29:47,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:47,581 INFO L276 IsEmpty]: Start isEmpty. Operand 8643 states and 9978 transitions. [2023-12-20 17:29:47,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-12-20 17:29:47,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:47,584 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, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:29:47,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 17:29:47,585 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:47,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:47,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1500737059, now seen corresponding path program 1 times [2023-12-20 17:29:47,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:47,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828198957] [2023-12-20 17:29:47,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:47,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:47,962 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 314 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:29:47,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:47,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828198957] [2023-12-20 17:29:47,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828198957] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:29:47,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699633588] [2023-12-20 17:29:47,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:47,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:29:47,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:29:47,966 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) [2023-12-20 17:29:47,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 17:29:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:48,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-20 17:29:48,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:29:48,575 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 250 proven. 82 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-20 17:29:48,575 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:29:49,312 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 250 proven. 82 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-20 17:29:49,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699633588] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 17:29:49,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 17:29:49,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2023-12-20 17:29:49,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637926967] [2023-12-20 17:29:49,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 17:29:49,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 17:29:49,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:49,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 17:29:49,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:29:49,315 INFO L87 Difference]: Start difference. First operand 8643 states and 9978 transitions. Second operand has 9 states, 9 states have (on average 84.88888888888889) internal successors, (764), 9 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) [2023-12-20 17:30:01,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:01,706 INFO L93 Difference]: Finished difference Result 56144 states and 64618 transitions. [2023-12-20 17:30:01,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 17:30:01,710 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 84.88888888888889) internal successors, (764), 9 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 315 [2023-12-20 17:30:01,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:01,776 INFO L225 Difference]: With dead ends: 56144 [2023-12-20 17:30:01,776 INFO L226 Difference]: Without dead ends: 44097 [2023-12-20 17:30:01,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=327, Unknown=0, NotChecked=0, Total=462 [2023-12-20 17:30:01,790 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 9611 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 11190 mSolverCounterSat, 3002 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9611 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 14192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3002 IncrementalHoareTripleChecker+Valid, 11190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:01,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9611 Valid, 483 Invalid, 14192 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3002 Valid, 11190 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2023-12-20 17:30:01,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44097 states. [2023-12-20 17:30:02,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44097 to 37617. [2023-12-20 17:30:02,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37617 states, 37616 states have (on average 1.1386112292641428) internal successors, (42830), 37616 states have internal predecessors, (42830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:02,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37617 states to 37617 states and 42830 transitions. [2023-12-20 17:30:02,301 INFO L78 Accepts]: Start accepts. Automaton has 37617 states and 42830 transitions. Word has length 315 [2023-12-20 17:30:02,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:02,301 INFO L495 AbstractCegarLoop]: Abstraction has 37617 states and 42830 transitions. [2023-12-20 17:30:02,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 84.88888888888889) internal successors, (764), 9 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) [2023-12-20 17:30:02,301 INFO L276 IsEmpty]: Start isEmpty. Operand 37617 states and 42830 transitions. [2023-12-20 17:30:02,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2023-12-20 17:30:02,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:02,325 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, 5, 5, 5, 5, 5, 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, 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] [2023-12-20 17:30:02,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 17:30:02,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-20 17:30:02,534 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:02,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:02,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1961087356, now seen corresponding path program 1 times [2023-12-20 17:30:02,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:02,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16800122] [2023-12-20 17:30:02,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:02,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:03,286 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 541 proven. 80 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-20 17:30:03,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:03,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16800122] [2023-12-20 17:30:03,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16800122] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:30:03,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581589470] [2023-12-20 17:30:03,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:03,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:30:03,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:30:03,298 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) [2023-12-20 17:30:03,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 17:30:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:03,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 17:30:03,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:30:03,794 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 621 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-20 17:30:03,794 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:30:03,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581589470] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:30:03,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:30:03,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-20 17:30:03,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043769378] [2023-12-20 17:30:03,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:30:03,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:30:03,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:03,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:30:03,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:30:03,796 INFO L87 Difference]: Start difference. First operand 37617 states and 42830 transitions. Second operand has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:06,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:06,162 INFO L93 Difference]: Finished difference Result 82883 states and 94293 transitions. [2023-12-20 17:30:06,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:30:06,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 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 397 [2023-12-20 17:30:06,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:06,235 INFO L225 Difference]: With dead ends: 82883 [2023-12-20 17:30:06,236 INFO L226 Difference]: Without dead ends: 45692 [2023-12-20 17:30:06,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:30:06,269 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 812 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 2142 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 2478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 2142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:06,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 340 Invalid, 2478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 2142 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 17:30:06,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45692 states. [2023-12-20 17:30:06,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45692 to 44417. [2023-12-20 17:30:06,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44417 states, 44416 states have (on average 1.1227260446685878) internal successors, (49867), 44416 states have internal predecessors, (49867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:06,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44417 states to 44417 states and 49867 transitions. [2023-12-20 17:30:06,736 INFO L78 Accepts]: Start accepts. Automaton has 44417 states and 49867 transitions. Word has length 397 [2023-12-20 17:30:06,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:06,737 INFO L495 AbstractCegarLoop]: Abstraction has 44417 states and 49867 transitions. [2023-12-20 17:30:06,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:06,737 INFO L276 IsEmpty]: Start isEmpty. Operand 44417 states and 49867 transitions. [2023-12-20 17:30:06,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2023-12-20 17:30:06,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:06,871 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, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:30:06,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 17:30:07,076 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,SelfDestructingSolverStorable10 [2023-12-20 17:30:07,076 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:07,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:07,077 INFO L85 PathProgramCache]: Analyzing trace with hash -112265035, now seen corresponding path program 1 times [2023-12-20 17:30:07,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:07,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264126494] [2023-12-20 17:30:07,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:07,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:07,322 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 532 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-12-20 17:30:07,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:07,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264126494] [2023-12-20 17:30:07,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264126494] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:30:07,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:30:07,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:30:07,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484132276] [2023-12-20 17:30:07,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:30:07,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:30:07,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:07,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:30:07,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:30:07,325 INFO L87 Difference]: Start difference. First operand 44417 states and 49867 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:09,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:09,301 INFO L93 Difference]: Finished difference Result 102478 states and 115556 transitions. [2023-12-20 17:30:09,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:30:09,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 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 445 [2023-12-20 17:30:09,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:09,379 INFO L225 Difference]: With dead ends: 102478 [2023-12-20 17:30:09,379 INFO L226 Difference]: Without dead ends: 58912 [2023-12-20 17:30:09,410 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 [2023-12-20 17:30:09,411 INFO L413 NwaCegarLoop]: 769 mSDtfsCounter, 300 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:09,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 821 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 17:30:09,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58912 states. [2023-12-20 17:30:10,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58912 to 54211. [2023-12-20 17:30:10,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54211 states, 54210 states have (on average 1.1144438295517431) internal successors, (60414), 54210 states have internal predecessors, (60414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:10,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54211 states to 54211 states and 60414 transitions. [2023-12-20 17:30:10,101 INFO L78 Accepts]: Start accepts. Automaton has 54211 states and 60414 transitions. Word has length 445 [2023-12-20 17:30:10,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:10,102 INFO L495 AbstractCegarLoop]: Abstraction has 54211 states and 60414 transitions. [2023-12-20 17:30:10,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:10,102 INFO L276 IsEmpty]: Start isEmpty. Operand 54211 states and 60414 transitions. [2023-12-20 17:30:10,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2023-12-20 17:30:10,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:10,112 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, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:30:10,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 17:30:10,112 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:10,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:10,113 INFO L85 PathProgramCache]: Analyzing trace with hash -553985484, now seen corresponding path program 1 times [2023-12-20 17:30:10,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:10,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417384069] [2023-12-20 17:30:10,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:10,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:10,480 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 543 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-12-20 17:30:10,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:10,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417384069] [2023-12-20 17:30:10,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417384069] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:30:10,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:30:10,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:30:10,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549884655] [2023-12-20 17:30:10,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:30:10,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:30:10,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:10,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:30:10,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:30:10,482 INFO L87 Difference]: Start difference. First operand 54211 states and 60414 transitions. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:12,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:12,280 INFO L93 Difference]: Finished difference Result 110115 states and 123122 transitions. [2023-12-20 17:30:12,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:30:12,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 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 478 [2023-12-20 17:30:12,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:12,384 INFO L225 Difference]: With dead ends: 110115 [2023-12-20 17:30:12,384 INFO L226 Difference]: Without dead ends: 56755 [2023-12-20 17:30:12,417 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 [2023-12-20 17:30:12,419 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 278 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:12,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 789 Invalid, 1372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 17:30:12,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56755 states. [2023-12-20 17:30:13,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56755 to 56755. [2023-12-20 17:30:13,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56755 states, 56754 states have (on average 1.1015963632519294) internal successors, (62520), 56754 states have internal predecessors, (62520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:13,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56755 states to 56755 states and 62520 transitions. [2023-12-20 17:30:13,117 INFO L78 Accepts]: Start accepts. Automaton has 56755 states and 62520 transitions. Word has length 478 [2023-12-20 17:30:13,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:13,117 INFO L495 AbstractCegarLoop]: Abstraction has 56755 states and 62520 transitions. [2023-12-20 17:30:13,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:13,118 INFO L276 IsEmpty]: Start isEmpty. Operand 56755 states and 62520 transitions. [2023-12-20 17:30:13,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2023-12-20 17:30:13,126 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:13,126 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, 5, 5, 5, 5, 5, 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, 2, 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] [2023-12-20 17:30:13,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 17:30:13,126 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:13,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:13,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1819847448, now seen corresponding path program 1 times [2023-12-20 17:30:13,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:13,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843364959] [2023-12-20 17:30:13,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:13,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:13,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:13,650 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 440 proven. 82 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-20 17:30:13,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:13,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843364959] [2023-12-20 17:30:13,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843364959] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:30:13,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444101437] [2023-12-20 17:30:13,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:13,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:30:13,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:30:13,652 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) [2023-12-20 17:30:13,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 17:30:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:13,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:30:13,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:30:14,115 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 440 proven. 82 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-20 17:30:14,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:30:14,429 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 522 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-20 17:30:14,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444101437] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 17:30:14,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-20 17:30:14,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-12-20 17:30:14,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189779709] [2023-12-20 17:30:14,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:30:14,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:30:14,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:14,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:30:14,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:30:14,433 INFO L87 Difference]: Start difference. First operand 56755 states and 62520 transitions. Second operand has 4 states, 4 states have (on average 88.75) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:17,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:17,682 INFO L93 Difference]: Finished difference Result 136896 states and 150799 transitions. [2023-12-20 17:30:17,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:30:17,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 479 [2023-12-20 17:30:17,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:17,787 INFO L225 Difference]: With dead ends: 136896 [2023-12-20 17:30:17,787 INFO L226 Difference]: Without dead ends: 80139 [2023-12-20 17:30:17,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 959 GetRequests, 955 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:30:17,808 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 866 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 2862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:17,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 123 Invalid, 2862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 17:30:17,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80139 states. [2023-12-20 17:30:18,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80139 to 76733. [2023-12-20 17:30:18,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76733 states, 76732 states have (on average 1.0854011364228744) internal successors, (83285), 76732 states have internal predecessors, (83285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:18,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76733 states to 76733 states and 83285 transitions. [2023-12-20 17:30:18,618 INFO L78 Accepts]: Start accepts. Automaton has 76733 states and 83285 transitions. Word has length 479 [2023-12-20 17:30:18,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:18,618 INFO L495 AbstractCegarLoop]: Abstraction has 76733 states and 83285 transitions. [2023-12-20 17:30:18,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:18,618 INFO L276 IsEmpty]: Start isEmpty. Operand 76733 states and 83285 transitions. [2023-12-20 17:30:18,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2023-12-20 17:30:18,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:18,628 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, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1] [2023-12-20 17:30:18,635 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-20 17:30:18,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:30:18,830 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:18,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:18,830 INFO L85 PathProgramCache]: Analyzing trace with hash -440305533, now seen corresponding path program 1 times [2023-12-20 17:30:18,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:18,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946242120] [2023-12-20 17:30:18,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:18,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:19,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1046 backedges. 794 proven. 72 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-20 17:30:19,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:19,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946242120] [2023-12-20 17:30:19,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946242120] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:30:19,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832885866] [2023-12-20 17:30:19,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:19,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:30:19,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:30:19,829 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) [2023-12-20 17:30:19,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 17:30:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:19,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 17:30:19,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:30:20,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1046 backedges. 866 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-20 17:30:20,220 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:30:20,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832885866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:30:20,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:30:20,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-20 17:30:20,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430810947] [2023-12-20 17:30:20,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:30:20,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:30:20,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:20,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:30:20,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:30:20,222 INFO L87 Difference]: Start difference. First operand 76733 states and 83285 transitions. Second operand has 4 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:22,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:22,545 INFO L93 Difference]: Finished difference Result 156874 states and 170215 transitions. [2023-12-20 17:30:22,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:30:22,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 494 [2023-12-20 17:30:22,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:22,634 INFO L225 Difference]: With dead ends: 156874 [2023-12-20 17:30:22,634 INFO L226 Difference]: Without dead ends: 80992 [2023-12-20 17:30:22,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:30:22,663 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 853 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 2043 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 2319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 2043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:22,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 266 Invalid, 2319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 2043 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 17:30:22,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80992 states. [2023-12-20 17:30:23,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80992 to 80141. [2023-12-20 17:30:23,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80141 states, 80140 states have (on average 1.0832043923134516) internal successors, (86808), 80140 states have internal predecessors, (86808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:23,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80141 states to 80141 states and 86808 transitions. [2023-12-20 17:30:23,684 INFO L78 Accepts]: Start accepts. Automaton has 80141 states and 86808 transitions. Word has length 494 [2023-12-20 17:30:23,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:23,684 INFO L495 AbstractCegarLoop]: Abstraction has 80141 states and 86808 transitions. [2023-12-20 17:30:23,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:23,684 INFO L276 IsEmpty]: Start isEmpty. Operand 80141 states and 86808 transitions. [2023-12-20 17:30:23,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2023-12-20 17:30:23,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:23,696 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, 6, 6, 6, 6, 6, 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, 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] [2023-12-20 17:30:23,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 17:30:23,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-20 17:30:23,901 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:23,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:23,901 INFO L85 PathProgramCache]: Analyzing trace with hash 563707671, now seen corresponding path program 1 times [2023-12-20 17:30:23,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:23,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503976722] [2023-12-20 17:30:23,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:23,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:24,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 823 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-20 17:30:24,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:24,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503976722] [2023-12-20 17:30:24,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503976722] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:30:24,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:30:24,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:30:24,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518602113] [2023-12-20 17:30:24,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:30:24,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:30:24,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:24,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:30:24,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:30:24,444 INFO L87 Difference]: Start difference. First operand 80141 states and 86808 transitions. Second operand has 4 states, 4 states have (on average 98.5) internal successors, (394), 4 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:27,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:27,535 INFO L93 Difference]: Finished difference Result 201616 states and 218546 transitions. [2023-12-20 17:30:27,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:30:27,536 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 98.5) internal successors, (394), 4 states have internal predecessors, (394), 0 states have call successors, (0), 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 556 [2023-12-20 17:30:27,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:27,679 INFO L225 Difference]: With dead ends: 201616 [2023-12-20 17:30:27,679 INFO L226 Difference]: Without dead ends: 122326 [2023-12-20 17:30:27,723 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 [2023-12-20 17:30:27,723 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 763 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 2841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:27,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 179 Invalid, 2841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 17:30:27,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122326 states. [2023-12-20 17:30:28,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122326 to 105717. [2023-12-20 17:30:29,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105717 states, 105716 states have (on average 1.0820783987286693) internal successors, (114393), 105716 states have internal predecessors, (114393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:29,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105717 states to 105717 states and 114393 transitions. [2023-12-20 17:30:29,323 INFO L78 Accepts]: Start accepts. Automaton has 105717 states and 114393 transitions. Word has length 556 [2023-12-20 17:30:29,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:29,323 INFO L495 AbstractCegarLoop]: Abstraction has 105717 states and 114393 transitions. [2023-12-20 17:30:29,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.5) internal successors, (394), 4 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:29,324 INFO L276 IsEmpty]: Start isEmpty. Operand 105717 states and 114393 transitions. [2023-12-20 17:30:29,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2023-12-20 17:30:29,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:29,335 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, 6, 6, 6, 6, 6, 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, 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] [2023-12-20 17:30:29,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 17:30:29,335 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:29,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:29,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1192051392, now seen corresponding path program 1 times [2023-12-20 17:30:29,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:29,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070073634] [2023-12-20 17:30:29,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:29,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:29,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1061 backedges. 800 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-12-20 17:30:29,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:29,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070073634] [2023-12-20 17:30:29,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070073634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:30:29,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:30:29,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:30:29,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106326332] [2023-12-20 17:30:29,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:30:29,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:30:29,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:29,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:30:29,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:30:29,716 INFO L87 Difference]: Start difference. First operand 105717 states and 114393 transitions. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:31,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:31,626 INFO L93 Difference]: Finished difference Result 231440 states and 251217 transitions. [2023-12-20 17:30:31,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:30:31,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 558 [2023-12-20 17:30:31,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:31,807 INFO L225 Difference]: With dead ends: 231440 [2023-12-20 17:30:31,807 INFO L226 Difference]: Without dead ends: 126574 [2023-12-20 17:30:32,033 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 [2023-12-20 17:30:32,034 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 311 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 1378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:32,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 290 Invalid, 1378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 17:30:32,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126574 states. [2023-12-20 17:30:33,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126574 to 124427. [2023-12-20 17:30:33,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124427 states, 124426 states have (on average 1.0736019802935077) internal successors, (133584), 124426 states have internal predecessors, (133584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:33,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124427 states to 124427 states and 133584 transitions. [2023-12-20 17:30:33,753 INFO L78 Accepts]: Start accepts. Automaton has 124427 states and 133584 transitions. Word has length 558 [2023-12-20 17:30:33,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:33,753 INFO L495 AbstractCegarLoop]: Abstraction has 124427 states and 133584 transitions. [2023-12-20 17:30:33,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:33,753 INFO L276 IsEmpty]: Start isEmpty. Operand 124427 states and 133584 transitions. [2023-12-20 17:30:33,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2023-12-20 17:30:33,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:33,766 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, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1] [2023-12-20 17:30:33,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 17:30:33,780 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:33,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:33,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1873006250, now seen corresponding path program 1 times [2023-12-20 17:30:33,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:33,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984833579] [2023-12-20 17:30:33,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:33,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:34,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1046 backedges. 562 proven. 73 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2023-12-20 17:30:34,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:34,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984833579] [2023-12-20 17:30:34,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984833579] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:30:34,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324107129] [2023-12-20 17:30:34,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:34,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:30:34,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:30:34,288 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:30:34,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 17:30:34,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:34,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-20 17:30:34,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:30:35,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1046 backedges. 992 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-20 17:30:35,223 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:30:35,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324107129] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:30:35,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:30:35,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 7 [2023-12-20 17:30:35,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857964023] [2023-12-20 17:30:35,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:30:35,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 17:30:35,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:35,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 17:30:35,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:30:35,226 INFO L87 Difference]: Start difference. First operand 124427 states and 133584 transitions. Second operand has 5 states, 5 states have (on average 104.4) internal successors, (522), 5 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:38,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:38,716 INFO L93 Difference]: Finished difference Result 274848 states and 294615 transitions. [2023-12-20 17:30:38,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 17:30:38,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 104.4) internal successors, (522), 5 states have internal predecessors, (522), 0 states have call successors, (0), 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 575 [2023-12-20 17:30:38,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:38,907 INFO L225 Difference]: With dead ends: 274848 [2023-12-20 17:30:38,908 INFO L226 Difference]: Without dead ends: 151272 [2023-12-20 17:30:38,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:30:38,958 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 1058 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2619 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 3066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 2619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:38,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 276 Invalid, 3066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 2619 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 17:30:39,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151272 states. [2023-12-20 17:30:40,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151272 to 137651. [2023-12-20 17:30:40,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137651 states, 137650 states have (on average 1.071245913548856) internal successors, (147457), 137650 states have internal predecessors, (147457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:40,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137651 states to 137651 states and 147457 transitions. [2023-12-20 17:30:40,797 INFO L78 Accepts]: Start accepts. Automaton has 137651 states and 147457 transitions. Word has length 575 [2023-12-20 17:30:40,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:40,797 INFO L495 AbstractCegarLoop]: Abstraction has 137651 states and 147457 transitions. [2023-12-20 17:30:40,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.4) internal successors, (522), 5 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:40,797 INFO L276 IsEmpty]: Start isEmpty. Operand 137651 states and 147457 transitions. [2023-12-20 17:30:40,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2023-12-20 17:30:40,805 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:40,806 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, 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 17:30:40,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-20 17:30:41,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-20 17:30:41,007 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:41,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:41,007 INFO L85 PathProgramCache]: Analyzing trace with hash 2119902229, now seen corresponding path program 1 times [2023-12-20 17:30:41,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:41,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865157607] [2023-12-20 17:30:41,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:41,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:41,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 631 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2023-12-20 17:30:41,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:41,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865157607] [2023-12-20 17:30:41,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865157607] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:30:41,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:30:41,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:30:41,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085839466] [2023-12-20 17:30:41,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:30:41,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:30:41,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:41,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:30:41,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:30:41,528 INFO L87 Difference]: Start difference. First operand 137651 states and 147457 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:43,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:43,587 INFO L93 Difference]: Finished difference Result 280400 states and 300192 transitions. [2023-12-20 17:30:43,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:30:43,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 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 583 [2023-12-20 17:30:43,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:43,764 INFO L225 Difference]: With dead ends: 280400 [2023-12-20 17:30:43,764 INFO L226 Difference]: Without dead ends: 143175 [2023-12-20 17:30:43,827 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 [2023-12-20 17:30:43,827 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 352 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:43,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 289 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 17:30:43,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143175 states. [2023-12-20 17:30:45,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143175 to 141881. [2023-12-20 17:30:45,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141881 states, 141880 states have (on average 1.064441781787426) internal successors, (151023), 141880 states have internal predecessors, (151023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:45,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141881 states to 141881 states and 151023 transitions. [2023-12-20 17:30:45,741 INFO L78 Accepts]: Start accepts. Automaton has 141881 states and 151023 transitions. Word has length 583 [2023-12-20 17:30:45,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:45,741 INFO L495 AbstractCegarLoop]: Abstraction has 141881 states and 151023 transitions. [2023-12-20 17:30:45,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:45,741 INFO L276 IsEmpty]: Start isEmpty. Operand 141881 states and 151023 transitions. [2023-12-20 17:30:45,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2023-12-20 17:30:45,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:45,752 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, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:30:45,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 17:30:45,752 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:45,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:45,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1692442935, now seen corresponding path program 1 times [2023-12-20 17:30:45,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:45,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778346096] [2023-12-20 17:30:45,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:45,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:46,404 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 561 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-12-20 17:30:46,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:46,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778346096] [2023-12-20 17:30:46,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778346096] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:30:46,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:30:46,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:30:46,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561066014] [2023-12-20 17:30:46,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:30:46,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:30:46,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:46,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:30:46,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:30:46,406 INFO L87 Difference]: Start difference. First operand 141881 states and 151023 transitions. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:48,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:48,253 INFO L93 Difference]: Finished difference Result 282915 states and 301195 transitions. [2023-12-20 17:30:48,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:30:48,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 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 616 [2023-12-20 17:30:48,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:48,426 INFO L225 Difference]: With dead ends: 282915 [2023-12-20 17:30:48,426 INFO L226 Difference]: Without dead ends: 141885 [2023-12-20 17:30:48,492 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 [2023-12-20 17:30:48,493 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 113 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:48,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 759 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 17:30:48,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141885 states. [2023-12-20 17:30:50,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141885 to 141031. [2023-12-20 17:30:50,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141031 states, 141030 states have (on average 1.0645323689995037) internal successors, (150131), 141030 states have internal predecessors, (150131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:50,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141031 states to 141031 states and 150131 transitions. [2023-12-20 17:30:50,337 INFO L78 Accepts]: Start accepts. Automaton has 141031 states and 150131 transitions. Word has length 616 [2023-12-20 17:30:50,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:50,337 INFO L495 AbstractCegarLoop]: Abstraction has 141031 states and 150131 transitions. [2023-12-20 17:30:50,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:50,338 INFO L276 IsEmpty]: Start isEmpty. Operand 141031 states and 150131 transitions. [2023-12-20 17:30:50,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2023-12-20 17:30:50,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:50,580 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, 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, 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] [2023-12-20 17:30:50,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 17:30:50,580 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:50,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:50,580 INFO L85 PathProgramCache]: Analyzing trace with hash -2146597188, now seen corresponding path program 1 times [2023-12-20 17:30:50,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:50,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783797743] [2023-12-20 17:30:50,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:50,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:50,945 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 415 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-20 17:30:50,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:50,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783797743] [2023-12-20 17:30:50,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783797743] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:30:50,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:30:50,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:30:50,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714024896] [2023-12-20 17:30:50,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:30:50,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:30:50,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:50,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:30:50,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:30:50,947 INFO L87 Difference]: Start difference. First operand 141031 states and 150131 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) [2023-12-20 17:30:53,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:53,174 INFO L93 Difference]: Finished difference Result 289317 states and 308164 transitions. [2023-12-20 17:30:53,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:30:53,174 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 [2023-12-20 17:30:53,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:53,365 INFO L225 Difference]: With dead ends: 289317 [2023-12-20 17:30:53,366 INFO L226 Difference]: Without dead ends: 148711 [2023-12-20 17:30:53,437 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 [2023-12-20 17:30:53,438 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 440 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:53,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 212 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 17:30:53,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148711 states. [2023-12-20 17:30:54,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148711 to 142740. [2023-12-20 17:30:55,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142740 states, 142739 states have (on average 1.0640609784291608) internal successors, (151883), 142739 states have internal predecessors, (151883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:55,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142740 states to 142740 states and 151883 transitions. [2023-12-20 17:30:55,225 INFO L78 Accepts]: Start accepts. Automaton has 142740 states and 151883 transitions. Word has length 617 [2023-12-20 17:30:55,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:55,226 INFO L495 AbstractCegarLoop]: Abstraction has 142740 states and 151883 transitions. [2023-12-20 17:30:55,226 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) [2023-12-20 17:30:55,226 INFO L276 IsEmpty]: Start isEmpty. Operand 142740 states and 151883 transitions. [2023-12-20 17:30:55,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2023-12-20 17:30:55,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:55,235 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:30:55,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 17:30:55,236 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:55,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:55,236 INFO L85 PathProgramCache]: Analyzing trace with hash 422834606, now seen corresponding path program 1 times [2023-12-20 17:30:55,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:55,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717061378] [2023-12-20 17:30:55,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:55,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:55,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1603 backedges. 1143 proven. 0 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2023-12-20 17:30:55,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:55,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717061378] [2023-12-20 17:30:55,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717061378] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:30:55,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:30:55,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:30:55,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618283389] [2023-12-20 17:30:55,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:30:55,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:30:55,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:55,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:30:55,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:30:55,829 INFO L87 Difference]: Start difference. First operand 142740 states and 151883 transitions. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:58,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:58,039 INFO L93 Difference]: Finished difference Result 292287 states and 311150 transitions. [2023-12-20 17:30:58,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:30:58,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 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 620 [2023-12-20 17:30:58,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:58,378 INFO L225 Difference]: With dead ends: 292287 [2023-12-20 17:30:58,378 INFO L226 Difference]: Without dead ends: 150398 [2023-12-20 17:30:58,495 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 [2023-12-20 17:30:58,497 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 382 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:58,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 294 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 17:30:58,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150398 states. [2023-12-20 17:30:59,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150398 to 149540. [2023-12-20 17:31:00,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149540 states, 149539 states have (on average 1.0632811507365971) internal successors, (159002), 149539 states have internal predecessors, (159002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:00,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149540 states to 149540 states and 159002 transitions. [2023-12-20 17:31:00,513 INFO L78 Accepts]: Start accepts. Automaton has 149540 states and 159002 transitions. Word has length 620 [2023-12-20 17:31:00,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:31:00,513 INFO L495 AbstractCegarLoop]: Abstraction has 149540 states and 159002 transitions. [2023-12-20 17:31:00,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:00,514 INFO L276 IsEmpty]: Start isEmpty. Operand 149540 states and 159002 transitions. [2023-12-20 17:31:00,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2023-12-20 17:31:00,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:31:00,524 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:31:00,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 17:31:00,524 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:31:00,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:31:00,525 INFO L85 PathProgramCache]: Analyzing trace with hash -460242705, now seen corresponding path program 1 times [2023-12-20 17:31:00,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:31:00,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90050815] [2023-12-20 17:31:00,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:31:00,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:31:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:31:00,945 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-20 17:31:00,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:31:00,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90050815] [2023-12-20 17:31:00,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90050815] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:31:00,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:31:00,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:31:00,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100914542] [2023-12-20 17:31:00,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:31:00,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:31:00,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:31:00,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:31:00,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:31:00,947 INFO L87 Difference]: Start difference. First operand 149540 states and 159002 transitions. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 2 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:02,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:31:02,694 INFO L93 Difference]: Finished difference Result 293108 states and 311526 transitions. [2023-12-20 17:31:02,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:31:02,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 2 states have internal predecessors, (460), 0 states have call successors, (0), 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 622 [2023-12-20 17:31:02,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:31:02,870 INFO L225 Difference]: With dead ends: 293108 [2023-12-20 17:31:02,870 INFO L226 Difference]: Without dead ends: 144417 [2023-12-20 17:31:02,931 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 [2023-12-20 17:31:02,931 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 315 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:31:02,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 80 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 17:31:03,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144417 states. [2023-12-20 17:31:04,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144417 to 144397. [2023-12-20 17:31:04,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144397 states, 144396 states have (on average 1.061781489791961) internal successors, (153317), 144396 states have internal predecessors, (153317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:04,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144397 states to 144397 states and 153317 transitions. [2023-12-20 17:31:04,717 INFO L78 Accepts]: Start accepts. Automaton has 144397 states and 153317 transitions. Word has length 622 [2023-12-20 17:31:04,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:31:04,717 INFO L495 AbstractCegarLoop]: Abstraction has 144397 states and 153317 transitions. [2023-12-20 17:31:04,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 2 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:04,717 INFO L276 IsEmpty]: Start isEmpty. Operand 144397 states and 153317 transitions. [2023-12-20 17:31:04,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2023-12-20 17:31:04,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:31:04,727 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, 6, 6, 6, 6, 6, 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, 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] [2023-12-20 17:31:04,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 17:31:04,727 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:31:04,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:31:04,728 INFO L85 PathProgramCache]: Analyzing trace with hash 342829538, now seen corresponding path program 1 times [2023-12-20 17:31:04,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:31:04,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63259917] [2023-12-20 17:31:04,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:31:04,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:31:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:31:05,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1070 backedges. 753 proven. 72 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-20 17:31:05,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:31:05,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63259917] [2023-12-20 17:31:05,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63259917] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:31:05,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015173726] [2023-12-20 17:31:05,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:31:05,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:31:05,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:31:05,520 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:31:05,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 17:31:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:31:05,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-20 17:31:05,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:31:06,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1070 backedges. 585 proven. 216 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-12-20 17:31:06,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:31:06,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1070 backedges. 556 proven. 0 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2023-12-20 17:31:06,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015173726] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 17:31:06,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-20 17:31:06,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 4] total 8 [2023-12-20 17:31:06,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995447037] [2023-12-20 17:31:06,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:31:06,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:31:06,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:31:06,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:31:06,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:31:06,591 INFO L87 Difference]: Start difference. First operand 144397 states and 153317 transitions. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:08,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:31:08,929 INFO L93 Difference]: Finished difference Result 299428 states and 317781 transitions. [2023-12-20 17:31:08,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:31:08,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 638 [2023-12-20 17:31:08,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:31:09,113 INFO L225 Difference]: With dead ends: 299428 [2023-12-20 17:31:09,113 INFO L226 Difference]: Without dead ends: 155455 [2023-12-20 17:31:09,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1279 GetRequests, 1273 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:31:09,160 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 382 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:31:09,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 721 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 17:31:09,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155455 states. [2023-12-20 17:31:10,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155455 to 147349. [2023-12-20 17:31:10,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147349 states, 147348 states have (on average 1.053594212340853) internal successors, (155245), 147348 states have internal predecessors, (155245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:11,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147349 states to 147349 states and 155245 transitions. [2023-12-20 17:31:11,077 INFO L78 Accepts]: Start accepts. Automaton has 147349 states and 155245 transitions. Word has length 638 [2023-12-20 17:31:11,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:31:11,077 INFO L495 AbstractCegarLoop]: Abstraction has 147349 states and 155245 transitions. [2023-12-20 17:31:11,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:11,078 INFO L276 IsEmpty]: Start isEmpty. Operand 147349 states and 155245 transitions. [2023-12-20 17:31:11,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 740 [2023-12-20 17:31:11,092 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:31:11,093 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, 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, 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, 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] [2023-12-20 17:31:11,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 17:31:11,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:31:11,294 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:31:11,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:31:11,295 INFO L85 PathProgramCache]: Analyzing trace with hash -2021927018, now seen corresponding path program 1 times [2023-12-20 17:31:11,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:31:11,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968284107] [2023-12-20 17:31:11,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:31:11,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:31:11,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:31:12,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 1188 proven. 0 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2023-12-20 17:31:12,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:31:12,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968284107] [2023-12-20 17:31:12,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968284107] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:31:12,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:31:12,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:31:12,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603598489] [2023-12-20 17:31:12,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:31:12,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:31:12,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:31:12,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:31:12,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:31:12,237 INFO L87 Difference]: Start difference. First operand 147349 states and 155245 transitions. Second operand has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:15,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:31:15,389 INFO L93 Difference]: Finished difference Result 325782 states and 342853 transitions. [2023-12-20 17:31:15,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:31:15,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 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 739 [2023-12-20 17:31:15,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:31:15,639 INFO L225 Difference]: With dead ends: 325782 [2023-12-20 17:31:15,639 INFO L226 Difference]: Without dead ends: 179284 [2023-12-20 17:31:15,712 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 [2023-12-20 17:31:15,713 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 775 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 2290 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 2607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 2290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:31:15,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 129 Invalid, 2607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 2290 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 17:31:15,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179284 states. [2023-12-20 17:31:17,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179284 to 169493. [2023-12-20 17:31:17,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169493 states, 169492 states have (on average 1.0522030538314493) internal successors, (178340), 169492 states have internal predecessors, (178340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:17,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169493 states to 169493 states and 178340 transitions. [2023-12-20 17:31:17,783 INFO L78 Accepts]: Start accepts. Automaton has 169493 states and 178340 transitions. Word has length 739 [2023-12-20 17:31:17,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:31:17,784 INFO L495 AbstractCegarLoop]: Abstraction has 169493 states and 178340 transitions. [2023-12-20 17:31:17,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:17,784 INFO L276 IsEmpty]: Start isEmpty. Operand 169493 states and 178340 transitions. [2023-12-20 17:31:17,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2023-12-20 17:31:17,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:31:17,799 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, 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, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:31:17,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 17:31:17,799 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:31:17,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:31:17,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1582623121, now seen corresponding path program 1 times [2023-12-20 17:31:17,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:31:17,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422204133] [2023-12-20 17:31:17,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:31:17,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:31:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:31:18,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 850 proven. 194 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-20 17:31:18,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:31:18,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422204133] [2023-12-20 17:31:18,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422204133] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:31:18,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202360009] [2023-12-20 17:31:18,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:31:18,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:31:18,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:31:18,828 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:31:18,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 17:31:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:31:19,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 923 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 17:31:19,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:31:19,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 683 proven. 197 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-20 17:31:19,703 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:31:20,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 880 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-20 17:31:20,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202360009] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 17:31:20,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-20 17:31:20,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2023-12-20 17:31:20,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708331354] [2023-12-20 17:31:20,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:31:20,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 17:31:20,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:31:20,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 17:31:20,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=77, Unknown=0, NotChecked=0, Total=132 [2023-12-20 17:31:20,007 INFO L87 Difference]: Start difference. First operand 169493 states and 178340 transitions. Second operand has 5 states, 5 states have (on average 116.4) internal successors, (582), 5 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:23,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:31:23,219 INFO L93 Difference]: Finished difference Result 353874 states and 372328 transitions. [2023-12-20 17:31:23,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:31:23,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 116.4) internal successors, (582), 5 states have internal predecessors, (582), 0 states have call successors, (0), 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 744 [2023-12-20 17:31:23,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:31:23,470 INFO L225 Difference]: With dead ends: 353874 [2023-12-20 17:31:23,470 INFO L226 Difference]: Without dead ends: 184380 [2023-12-20 17:31:23,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1492 GetRequests, 1482 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=77, Unknown=0, NotChecked=0, Total=132 [2023-12-20 17:31:23,539 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 1280 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 2049 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 2767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 2049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:31:23,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1280 Valid, 94 Invalid, 2767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [718 Valid, 2049 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 17:31:23,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184380 states. [2023-12-20 17:31:25,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184380 to 169908. [2023-12-20 17:31:25,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169908 states, 169907 states have (on average 1.0499273131772087) internal successors, (178390), 169907 states have internal predecessors, (178390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:25,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169908 states to 169908 states and 178390 transitions. [2023-12-20 17:31:25,845 INFO L78 Accepts]: Start accepts. Automaton has 169908 states and 178390 transitions. Word has length 744 [2023-12-20 17:31:25,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:31:25,845 INFO L495 AbstractCegarLoop]: Abstraction has 169908 states and 178390 transitions. [2023-12-20 17:31:25,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 116.4) internal successors, (582), 5 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:25,845 INFO L276 IsEmpty]: Start isEmpty. Operand 169908 states and 178390 transitions. [2023-12-20 17:31:25,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 748 [2023-12-20 17:31:25,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:31:25,860 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:31:25,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 17:31:26,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:31:26,064 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:31:26,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:31:26,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1905451900, now seen corresponding path program 1 times [2023-12-20 17:31:26,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:31:26,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115013213] [2023-12-20 17:31:26,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:31:26,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:31:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:31:26,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 591 proven. 0 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2023-12-20 17:31:26,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:31:26,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115013213] [2023-12-20 17:31:26,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115013213] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:31:26,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:31:26,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:31:26,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738487059] [2023-12-20 17:31:26,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:31:26,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:31:26,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:31:26,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:31:26,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:31:26,295 INFO L87 Difference]: Start difference. First operand 169908 states and 178390 transitions. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:28,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:31:28,536 INFO L93 Difference]: Finished difference Result 338959 states and 355872 transitions. [2023-12-20 17:31:28,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:31:28,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 747 [2023-12-20 17:31:28,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:31:28,777 INFO L225 Difference]: With dead ends: 338959 [2023-12-20 17:31:28,777 INFO L226 Difference]: Without dead ends: 169902 [2023-12-20 17:31:28,860 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 [2023-12-20 17:31:28,860 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 484 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:31:28,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 620 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 17:31:29,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169902 states. [2023-12-20 17:31:30,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169902 to 169472. [2023-12-20 17:31:30,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169472 states, 169471 states have (on average 1.0468044680210773) internal successors, (177403), 169471 states have internal predecessors, (177403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:31,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169472 states to 169472 states and 177403 transitions. [2023-12-20 17:31:31,212 INFO L78 Accepts]: Start accepts. Automaton has 169472 states and 177403 transitions. Word has length 747 [2023-12-20 17:31:31,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:31:31,212 INFO L495 AbstractCegarLoop]: Abstraction has 169472 states and 177403 transitions. [2023-12-20 17:31:31,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:31,212 INFO L276 IsEmpty]: Start isEmpty. Operand 169472 states and 177403 transitions. [2023-12-20 17:31:31,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2023-12-20 17:31:31,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:31:31,227 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, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:31:31,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 17:31:31,227 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:31:31,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:31:31,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1573500337, now seen corresponding path program 1 times [2023-12-20 17:31:31,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:31:31,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219189694] [2023-12-20 17:31:31,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:31:31,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:31:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:31:31,989 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 543 proven. 210 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-20 17:31:31,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:31:31,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219189694] [2023-12-20 17:31:31,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219189694] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:31:31,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812059752] [2023-12-20 17:31:31,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:31:31,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:31:31,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:31:31,990 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:31:31,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 17:31:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:31:32,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 17:31:32,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:31:32,722 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 535 proven. 54 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-20 17:31:32,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:31:33,026 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 589 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-20 17:31:33,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812059752] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 17:31:33,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-20 17:31:33,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 8 [2023-12-20 17:31:33,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845349560] [2023-12-20 17:31:33,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:31:33,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:31:33,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:31:33,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:31:33,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:31:33,029 INFO L87 Difference]: Start difference. First operand 169472 states and 177403 transitions. Second operand has 4 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:35,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:31:35,575 INFO L93 Difference]: Finished difference Result 174584 states and 182615 transitions. [2023-12-20 17:31:35,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:31:35,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 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 760 [2023-12-20 17:31:35,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:31:35,767 INFO L225 Difference]: With dead ends: 174584 [2023-12-20 17:31:35,767 INFO L226 Difference]: Without dead ends: 174157 [2023-12-20 17:31:35,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1523 GetRequests, 1516 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:31:35,815 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 785 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 2024 mSolverCounterSat, 537 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 2561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 2024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:31:35,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 108 Invalid, 2561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 2024 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 17:31:35,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174157 states. [2023-12-20 17:31:37,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174157 to 169472. [2023-12-20 17:31:37,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169472 states, 169471 states have (on average 1.0467159573024294) internal successors, (177388), 169471 states have internal predecessors, (177388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:38,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169472 states to 169472 states and 177388 transitions. [2023-12-20 17:31:38,091 INFO L78 Accepts]: Start accepts. Automaton has 169472 states and 177388 transitions. Word has length 760 [2023-12-20 17:31:38,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:31:38,092 INFO L495 AbstractCegarLoop]: Abstraction has 169472 states and 177388 transitions. [2023-12-20 17:31:38,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:38,092 INFO L276 IsEmpty]: Start isEmpty. Operand 169472 states and 177388 transitions. [2023-12-20 17:31:38,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2023-12-20 17:31:38,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:31:38,113 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, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:31:38,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 17:31:38,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-20 17:31:38,316 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:31:38,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:31:38,317 INFO L85 PathProgramCache]: Analyzing trace with hash -2127864546, now seen corresponding path program 1 times [2023-12-20 17:31:38,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:31:38,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826748923] [2023-12-20 17:31:38,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:31:38,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:31:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:31:39,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 730 proven. 237 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-20 17:31:39,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:31:39,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826748923] [2023-12-20 17:31:39,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826748923] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:31:39,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839209136] [2023-12-20 17:31:39,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:31:39,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:31:39,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:31:39,549 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:31:39,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 17:31:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:31:39,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 17:31:39,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:31:46,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 622 proven. 345 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-20 17:31:46,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:31:46,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 622 proven. 345 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-20 17:31:46,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839209136] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 17:31:46,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 17:31:46,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 13 [2023-12-20 17:31:46,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990712217] [2023-12-20 17:31:46,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 17:31:46,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-20 17:31:46,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:31:46,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-20 17:31:46,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-12-20 17:31:46,965 INFO L87 Difference]: Start difference. First operand 169472 states and 177388 transitions. Second operand has 13 states, 13 states have (on average 155.6153846153846) internal successors, (2023), 13 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:59,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-20 17:32:04,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-20 17:32:09,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-20 17:32:25,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:32:25,355 INFO L93 Difference]: Finished difference Result 414739 states and 433286 transitions. [2023-12-20 17:32:25,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-20 17:32:25,356 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 155.6153846153846) internal successors, (2023), 13 states have internal predecessors, (2023), 0 states have call successors, (0), 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 811 [2023-12-20 17:32:25,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:32:25,681 INFO L225 Difference]: With dead ends: 414739 [2023-12-20 17:32:25,681 INFO L226 Difference]: Without dead ends: 241868 [2023-12-20 17:32:25,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1709 GetRequests, 1587 SyntacticMatches, 67 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1174 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=621, Invalid=2571, Unknown=0, NotChecked=0, Total=3192 [2023-12-20 17:32:25,792 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 10256 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 26098 mSolverCounterSat, 2635 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10256 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 28735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2635 IncrementalHoareTripleChecker+Valid, 26098 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:32:25,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10256 Valid, 477 Invalid, 28735 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2635 Valid, 26098 Invalid, 2 Unknown, 0 Unchecked, 35.4s Time] [2023-12-20 17:32:26,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241868 states. [2023-12-20 17:32:28,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241868 to 157545. [2023-12-20 17:32:28,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157545 states, 157544 states have (on average 1.0376783628700554) internal successors, (163480), 157544 states have internal predecessors, (163480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:32:28,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157545 states to 157545 states and 163480 transitions. [2023-12-20 17:32:28,674 INFO L78 Accepts]: Start accepts. Automaton has 157545 states and 163480 transitions. Word has length 811 [2023-12-20 17:32:28,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:32:28,675 INFO L495 AbstractCegarLoop]: Abstraction has 157545 states and 163480 transitions. [2023-12-20 17:32:28,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 155.6153846153846) internal successors, (2023), 13 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:32:28,675 INFO L276 IsEmpty]: Start isEmpty. Operand 157545 states and 163480 transitions. [2023-12-20 17:32:28,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 978 [2023-12-20 17:32:28,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:32:28,738 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:32:28,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 17:32:28,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-20 17:32:28,941 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:32:28,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:32:28,942 INFO L85 PathProgramCache]: Analyzing trace with hash -573200426, now seen corresponding path program 1 times [2023-12-20 17:32:28,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:32:28,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520655200] [2023-12-20 17:32:28,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:32:28,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:32:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:32:30,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 1240 proven. 107 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-20 17:32:30,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:32:30,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520655200] [2023-12-20 17:32:30,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520655200] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:32:30,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127733518] [2023-12-20 17:32:30,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:32:30,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:32:30,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:32:30,280 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:32:30,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 17:32:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:32:30,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 17:32:30,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:32:30,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 1097 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2023-12-20 17:32:30,838 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:32:30,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127733518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:32:30,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:32:30,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-20 17:32:30,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481272342] [2023-12-20 17:32:30,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:32:30,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:32:30,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:32:30,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:32:30,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:32:30,840 INFO L87 Difference]: Start difference. First operand 157545 states and 163480 transitions. Second operand has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:32:32,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:32:32,590 INFO L93 Difference]: Finished difference Result 314239 states and 326102 transitions. [2023-12-20 17:32:32,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:32:32,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 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 977 [2023-12-20 17:32:32,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:32:32,752 INFO L225 Difference]: With dead ends: 314239 [2023-12-20 17:32:32,752 INFO L226 Difference]: Without dead ends: 157545 [2023-12-20 17:32:32,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 982 GetRequests, 976 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:32:32,827 INFO L413 NwaCegarLoop]: 677 mSDtfsCounter, 130 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:32:32,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 711 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 17:32:32,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157545 states. [2023-12-20 17:32:34,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157545 to 155841. [2023-12-20 17:32:34,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155841 states, 155840 states have (on average 1.0378080082135523) internal successors, (161732), 155840 states have internal predecessors, (161732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:32:34,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155841 states to 155841 states and 161732 transitions. [2023-12-20 17:32:34,735 INFO L78 Accepts]: Start accepts. Automaton has 155841 states and 161732 transitions. Word has length 977 [2023-12-20 17:32:34,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:32:34,736 INFO L495 AbstractCegarLoop]: Abstraction has 155841 states and 161732 transitions. [2023-12-20 17:32:34,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:32:34,736 INFO L276 IsEmpty]: Start isEmpty. Operand 155841 states and 161732 transitions. [2023-12-20 17:32:34,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 996 [2023-12-20 17:32:34,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:32:34,775 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:32:34,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-20 17:32:34,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:32:34,976 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:32:34,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:32:34,976 INFO L85 PathProgramCache]: Analyzing trace with hash -222712954, now seen corresponding path program 1 times [2023-12-20 17:32:34,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:32:34,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575209440] [2023-12-20 17:32:34,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:32:34,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:32:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:32:35,749 INFO L134 CoverageAnalysis]: Checked inductivity of 923 backedges. 720 proven. 0 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2023-12-20 17:32:35,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:32:35,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575209440] [2023-12-20 17:32:35,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575209440] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:32:35,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:32:35,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:32:35,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986752178] [2023-12-20 17:32:35,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:32:35,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:32:35,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:32:35,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:32:35,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:32:35,751 INFO L87 Difference]: Start difference. First operand 155841 states and 161732 transitions. Second operand has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:32:37,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:32:37,874 INFO L93 Difference]: Finished difference Result 309129 states and 320827 transitions. [2023-12-20 17:32:37,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:32:37,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 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 995 [2023-12-20 17:32:37,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:32:38,057 INFO L225 Difference]: With dead ends: 309129 [2023-12-20 17:32:38,057 INFO L226 Difference]: Without dead ends: 154139 [2023-12-20 17:32:38,136 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 [2023-12-20 17:32:38,136 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 103 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:32:38,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 645 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 17:32:38,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154139 states. [2023-12-20 17:32:39,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154139 to 151163. [2023-12-20 17:32:39,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151163 states, 151162 states have (on average 1.0347971050925497) internal successors, (156422), 151162 states have internal predecessors, (156422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:32:39,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151163 states to 151163 states and 156422 transitions. [2023-12-20 17:32:39,930 INFO L78 Accepts]: Start accepts. Automaton has 151163 states and 156422 transitions. Word has length 995 [2023-12-20 17:32:39,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:32:39,931 INFO L495 AbstractCegarLoop]: Abstraction has 151163 states and 156422 transitions. [2023-12-20 17:32:39,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:32:39,931 INFO L276 IsEmpty]: Start isEmpty. Operand 151163 states and 156422 transitions. [2023-12-20 17:32:40,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1150 [2023-12-20 17:32:40,001 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:32:40,001 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, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:32:40,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-20 17:32:40,002 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:32:40,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:32:40,002 INFO L85 PathProgramCache]: Analyzing trace with hash 268533410, now seen corresponding path program 1 times [2023-12-20 17:32:40,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:32:40,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063164612] [2023-12-20 17:32:40,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:32:40,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:32:40,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:32:41,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1833 backedges. 708 proven. 73 refuted. 0 times theorem prover too weak. 1052 trivial. 0 not checked. [2023-12-20 17:32:41,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:32:41,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063164612] [2023-12-20 17:32:41,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063164612] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:32:41,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94452687] [2023-12-20 17:32:41,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:32:41,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:32:41,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:32:41,112 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:32:41,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 17:32:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:32:41,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 1346 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:32:41,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:32:41,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1833 backedges. 708 proven. 73 refuted. 0 times theorem prover too weak. 1052 trivial. 0 not checked. [2023-12-20 17:32:41,535 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:32:41,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1833 backedges. 781 proven. 0 refuted. 0 times theorem prover too weak. 1052 trivial. 0 not checked. [2023-12-20 17:32:41,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94452687] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 17:32:41,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-20 17:32:41,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-12-20 17:32:41,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169160603] [2023-12-20 17:32:41,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:32:41,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:32:41,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:32:41,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:32:41,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:32:41,710 INFO L87 Difference]: Start difference. First operand 151163 states and 156422 transitions. Second operand has 4 states, 4 states have (on average 145.75) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:32:44,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:32:44,471 INFO L93 Difference]: Finished difference Result 325326 states and 336666 transitions. [2023-12-20 17:32:44,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:32:44,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 145.75) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 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 1149 [2023-12-20 17:32:44,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:32:44,666 INFO L225 Difference]: With dead ends: 325326 [2023-12-20 17:32:44,666 INFO L226 Difference]: Without dead ends: 174589 [2023-12-20 17:32:44,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2299 GetRequests, 2295 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:32:44,940 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 778 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2156 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 2448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 2156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:32:44,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 127 Invalid, 2448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 2156 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 17:32:45,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174589 states. [2023-12-20 17:32:46,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174589 to 140109. [2023-12-20 17:32:46,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140109 states, 140108 states have (on average 1.0358366403060497) internal successors, (145129), 140108 states have internal predecessors, (145129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:32:46,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140109 states to 140109 states and 145129 transitions. [2023-12-20 17:32:46,887 INFO L78 Accepts]: Start accepts. Automaton has 140109 states and 145129 transitions. Word has length 1149 [2023-12-20 17:32:46,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:32:46,888 INFO L495 AbstractCegarLoop]: Abstraction has 140109 states and 145129 transitions. [2023-12-20 17:32:46,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.75) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:32:46,888 INFO L276 IsEmpty]: Start isEmpty. Operand 140109 states and 145129 transitions. [2023-12-20 17:32:46,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1224 [2023-12-20 17:32:46,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:32:46,953 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, 8, 8, 8, 8, 8, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:32:46,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 17:32:47,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-20 17:32:47,159 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:32:47,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:32:47,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1064145590, now seen corresponding path program 1 times [2023-12-20 17:32:47,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:32:47,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973298113] [2023-12-20 17:32:47,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:32:47,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:32:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:32:48,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2646 backedges. 1512 proven. 144 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2023-12-20 17:32:48,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:32:48,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973298113] [2023-12-20 17:32:48,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973298113] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:32:48,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116387990] [2023-12-20 17:32:48,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:32:48,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:32:48,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:32:48,573 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:32:48,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 17:32:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:32:48,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 17:32:48,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:32:49,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2646 backedges. 1548 proven. 108 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2023-12-20 17:32:49,756 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:32:51,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2646 backedges. 1512 proven. 144 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2023-12-20 17:32:51,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116387990] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 17:32:51,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 17:32:51,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-12-20 17:32:51,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798403987] [2023-12-20 17:32:51,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 17:32:51,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-20 17:32:51,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:32:51,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-20 17:32:51,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-20 17:32:51,632 INFO L87 Difference]: Start difference. First operand 140109 states and 145129 transitions. Second operand has 11 states, 11 states have (on average 149.63636363636363) internal successors, (1646), 11 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:33:00,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:33:00,592 INFO L93 Difference]: Finished difference Result 363661 states and 376433 transitions. [2023-12-20 17:33:00,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-20 17:33:00,593 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 149.63636363636363) internal successors, (1646), 11 states have internal predecessors, (1646), 0 states have call successors, (0), 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 1223 [2023-12-20 17:33:00,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:33:00,868 INFO L225 Difference]: With dead ends: 363661 [2023-12-20 17:33:00,869 INFO L226 Difference]: Without dead ends: 220153 [2023-12-20 17:33:00,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2459 GetRequests, 2445 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=151, Unknown=0, NotChecked=0, Total=240 [2023-12-20 17:33:00,938 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 7438 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 6893 mSolverCounterSat, 2278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7438 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 9171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2278 IncrementalHoareTripleChecker+Valid, 6893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:33:00,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7438 Valid, 222 Invalid, 9171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2278 Valid, 6893 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-12-20 17:33:01,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220153 states. [2023-12-20 17:33:03,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220153 to 161399. [2023-12-20 17:33:03,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161399 states, 161398 states have (on average 1.037162790121315) internal successors, (167396), 161398 states have internal predecessors, (167396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:33:03,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161399 states to 161399 states and 167396 transitions. [2023-12-20 17:33:03,383 INFO L78 Accepts]: Start accepts. Automaton has 161399 states and 167396 transitions. Word has length 1223 [2023-12-20 17:33:03,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:33:03,384 INFO L495 AbstractCegarLoop]: Abstraction has 161399 states and 167396 transitions. [2023-12-20 17:33:03,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 149.63636363636363) internal successors, (1646), 11 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:33:03,384 INFO L276 IsEmpty]: Start isEmpty. Operand 161399 states and 167396 transitions. [2023-12-20 17:33:03,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1457 [2023-12-20 17:33:03,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:33:03,762 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, 8, 8, 8, 8, 8, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:33:03,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-20 17:33:03,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-20 17:33:03,964 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:33:03,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:33:03,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1556749152, now seen corresponding path program 1 times [2023-12-20 17:33:03,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:33:03,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240654774] [2023-12-20 17:33:03,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:33:03,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:33:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:33:04,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3434 backedges. 1883 proven. 0 refuted. 0 times theorem prover too weak. 1551 trivial. 0 not checked. [2023-12-20 17:33:04,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:33:04,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240654774] [2023-12-20 17:33:04,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240654774] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:33:04,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:33:04,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:33:04,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405167323] [2023-12-20 17:33:04,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:33:04,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:33:04,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:33:04,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:33:04,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:33:04,594 INFO L87 Difference]: Start difference. First operand 161399 states and 167396 transitions. Second operand has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:33:06,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:33:06,654 INFO L93 Difference]: Finished difference Result 311700 states and 323334 transitions. [2023-12-20 17:33:06,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:33:06,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 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 1456 [2023-12-20 17:33:06,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:33:06,832 INFO L225 Difference]: With dead ends: 311700 [2023-12-20 17:33:06,832 INFO L226 Difference]: Without dead ends: 150302 [2023-12-20 17:33:07,111 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 [2023-12-20 17:33:07,111 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 473 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:33:07,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 168 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 17:33:07,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150302 states. [2023-12-20 17:33:08,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150302 to 139671. [2023-12-20 17:33:08,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139671 states, 139670 states have (on average 1.0365003221880147) internal successors, (144768), 139670 states have internal predecessors, (144768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:33:08,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139671 states to 139671 states and 144768 transitions. [2023-12-20 17:33:08,768 INFO L78 Accepts]: Start accepts. Automaton has 139671 states and 144768 transitions. Word has length 1456 [2023-12-20 17:33:08,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:33:08,769 INFO L495 AbstractCegarLoop]: Abstraction has 139671 states and 144768 transitions. [2023-12-20 17:33:08,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:33:08,769 INFO L276 IsEmpty]: Start isEmpty. Operand 139671 states and 144768 transitions. [2023-12-20 17:33:09,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1539 [2023-12-20 17:33:09,097 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:33:09,098 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, 8, 8, 8, 8, 8, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:33:09,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-20 17:33:09,098 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:33:09,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:33:09,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1740390024, now seen corresponding path program 1 times [2023-12-20 17:33:09,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:33:09,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599987627] [2023-12-20 17:33:09,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:33:09,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:33:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:33:10,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3151 backedges. 1714 proven. 0 refuted. 0 times theorem prover too weak. 1437 trivial. 0 not checked. [2023-12-20 17:33:10,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:33:10,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599987627] [2023-12-20 17:33:10,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599987627] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:33:10,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:33:10,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:33:10,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82444321] [2023-12-20 17:33:10,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:33:10,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:33:10,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:33:10,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:33:10,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:33:10,579 INFO L87 Difference]: Start difference. First operand 139671 states and 144768 transitions. Second operand has 4 states, 4 states have (on average 203.25) internal successors, (813), 4 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:33:12,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:33:12,967 INFO L93 Difference]: Finished difference Result 267415 states and 277158 transitions. [2023-12-20 17:33:12,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:33:12,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 203.25) internal successors, (813), 4 states have internal predecessors, (813), 0 states have call successors, (0), 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 1538 [2023-12-20 17:33:12,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:33:13,132 INFO L225 Difference]: With dead ends: 267415 [2023-12-20 17:33:13,132 INFO L226 Difference]: Without dead ends: 127745 [2023-12-20 17:33:13,199 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 [2023-12-20 17:33:13,199 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 442 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 2090 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 2155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:33:13,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 671 Invalid, 2155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2090 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 17:33:13,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127745 states.