/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_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 17:38:58,317 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 17:38:58,380 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 17:38:58,384 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 17:38:58,384 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 17:38:58,405 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 17:38:58,405 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 17:38:58,406 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 17:38:58,406 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 17:38:58,409 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 17:38:58,409 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 17:38:58,410 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 17:38:58,410 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 17:38:58,411 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 17:38:58,411 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 17:38:58,411 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 17:38:58,411 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 17:38:58,411 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 17:38:58,411 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 17:38:58,412 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 17:38:58,412 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 17:38:58,412 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 17:38:58,412 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 17:38:58,412 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 17:38:58,412 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 17:38:58,413 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 17:38:58,413 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 17:38:58,413 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 17:38:58,413 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 17:38:58,413 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 17:38:58,414 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 17:38:58,414 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 17:38:58,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:38:58,414 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 17:38:58,414 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 17:38:58,415 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 17:38:58,415 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 17:38:58,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 17:38:58,415 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 17:38:58,415 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 17:38:58,415 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 17:38:58,415 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 17:38:58,415 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 17:38:58,415 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 17:38:58,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 17:38:58,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 17:38:58,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 17:38:58,633 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 17:38:58,633 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 17:38:58,634 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label52.c [2023-12-20 17:38:59,711 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 17:39:00,009 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 17:39:00,010 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label52.c [2023-12-20 17:39:00,030 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5f090004/6fd115403dc54194902114999d813540/FLAGdb5016265 [2023-12-20 17:39:00,041 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5f090004/6fd115403dc54194902114999d813540 [2023-12-20 17:39:00,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 17:39:00,044 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 17:39:00,046 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 17:39:00,046 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 17:39:00,049 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 17:39:00,049 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:39:00" (1/1) ... [2023-12-20 17:39:00,050 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43635d2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:39:00, skipping insertion in model container [2023-12-20 17:39:00,050 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:39:00" (1/1) ... [2023-12-20 17:39:00,112 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 17:39:00,258 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_label52.c[1111,1124] [2023-12-20 17:39:00,692 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:39:00,699 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 17:39:00,709 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_label52.c[1111,1124] [2023-12-20 17:39:00,890 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:39:00,903 INFO L206 MainTranslator]: Completed translation [2023-12-20 17:39:00,903 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:39:00 WrapperNode [2023-12-20 17:39:00,903 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 17:39:00,904 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 17:39:00,904 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 17:39:00,904 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 17:39:00,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:39:00" (1/1) ... [2023-12-20 17:39:00,941 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:39:00" (1/1) ... [2023-12-20 17:39:01,113 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2023-12-20 17:39:01,113 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 17:39:01,114 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 17:39:01,114 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 17:39:01,114 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 17:39:01,121 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:39:00" (1/1) ... [2023-12-20 17:39:01,121 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:39:00" (1/1) ... [2023-12-20 17:39:01,146 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:39:00" (1/1) ... [2023-12-20 17:39:01,219 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 17:39:01,219 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:39:00" (1/1) ... [2023-12-20 17:39:01,220 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:39:00" (1/1) ... [2023-12-20 17:39:01,382 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:39:00" (1/1) ... [2023-12-20 17:39:01,421 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:39:00" (1/1) ... [2023-12-20 17:39:01,452 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:39:00" (1/1) ... [2023-12-20 17:39:01,468 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:39:00" (1/1) ... [2023-12-20 17:39:01,505 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 17:39:01,506 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 17:39:01,506 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 17:39:01,506 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 17:39:01,507 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:39:00" (1/1) ... [2023-12-20 17:39:01,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:39:01,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:39:01,529 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 17:39:01,531 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 17:39:01,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 17:39:01,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 17:39:01,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 17:39:01,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 17:39:01,598 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 17:39:01,599 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 17:39:03,813 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 17:39:03,849 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 17:39:03,850 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 17:39:03,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:39:03 BoogieIcfgContainer [2023-12-20 17:39:03,850 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 17:39:03,852 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 17:39:03,852 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 17:39:03,854 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 17:39:03,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 05:39:00" (1/3) ... [2023-12-20 17:39:03,855 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417aecc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:39:03, skipping insertion in model container [2023-12-20 17:39:03,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:39:00" (2/3) ... [2023-12-20 17:39:03,855 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417aecc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:39:03, skipping insertion in model container [2023-12-20 17:39:03,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:39:03" (3/3) ... [2023-12-20 17:39:03,856 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label52.c [2023-12-20 17:39:03,867 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 17:39:03,868 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 17:39:03,918 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 17:39:03,923 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;@4707606b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 17:39:03,923 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 17:39:03,929 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 17:39:03,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-20 17:39:03,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:39:03,935 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-20 17:39:03,935 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:39:03,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:39:03,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1802040430, now seen corresponding path program 1 times [2023-12-20 17:39:03,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:39:03,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035653577] [2023-12-20 17:39:03,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:39:03,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:39:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:39:04,063 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 17:39:04,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:39:04,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035653577] [2023-12-20 17:39:04,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035653577] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:39:04,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:39:04,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:39:04,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364137757] [2023-12-20 17:39:04,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:39:04,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:39:04,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:39:04,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:39:04,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:39:04,095 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 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 17:39:06,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:39:06,283 INFO L93 Difference]: Finished difference Result 1507 states and 2892 transitions. [2023-12-20 17:39:06,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:39:06,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2023-12-20 17:39:06,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:39:06,299 INFO L225 Difference]: With dead ends: 1507 [2023-12-20 17:39:06,300 INFO L226 Difference]: Without dead ends: 976 [2023-12-20 17:39:06,303 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 17:39:06,305 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 468 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:39:06,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 450 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1400 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 17:39:06,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2023-12-20 17:39:06,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 970. [2023-12-20 17:39:06,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 969 states have (on average 1.5541795665634675) internal successors, (1506), 969 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states 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 17:39:06,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1506 transitions. [2023-12-20 17:39:06,380 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1506 transitions. Word has length 5 [2023-12-20 17:39:06,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:39:06,380 INFO L495 AbstractCegarLoop]: Abstraction has 970 states and 1506 transitions. [2023-12-20 17:39:06,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 17:39:06,380 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1506 transitions. [2023-12-20 17:39:06,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-20 17:39:06,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:39:06,382 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 17:39:06,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 17:39:06,383 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:39:06,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:39:06,383 INFO L85 PathProgramCache]: Analyzing trace with hash -494884230, now seen corresponding path program 1 times [2023-12-20 17:39:06,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:39:06,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164300616] [2023-12-20 17:39:06,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:39:06,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:39:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:39:06,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:39:06,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:39:06,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164300616] [2023-12-20 17:39:06,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164300616] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:39:06,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:39:06,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:39:06,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489828388] [2023-12-20 17:39:06,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:39:06,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:39:06,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:39:06,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:39:06,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:39:06,578 INFO L87 Difference]: Start difference. First operand 970 states and 1506 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 17:39:08,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:39:08,569 INFO L93 Difference]: Finished difference Result 2814 states and 4381 transitions. [2023-12-20 17:39:08,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:39:08,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2023-12-20 17:39:08,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:39:08,575 INFO L225 Difference]: With dead ends: 2814 [2023-12-20 17:39:08,575 INFO L226 Difference]: Without dead ends: 1845 [2023-12-20 17:39:08,576 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 17:39:08,577 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:39:08,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 578 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 17:39:08,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1845 states. [2023-12-20 17:39:08,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1845 to 1840. [2023-12-20 17:39:08,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 1.3507340946166395) internal successors, (2484), 1839 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states 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 17:39:08,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 2484 transitions. [2023-12-20 17:39:08,605 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 2484 transitions. Word has length 72 [2023-12-20 17:39:08,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:39:08,605 INFO L495 AbstractCegarLoop]: Abstraction has 1840 states and 2484 transitions. [2023-12-20 17:39:08,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 17:39:08,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 2484 transitions. [2023-12-20 17:39:08,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-20 17:39:08,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:39:08,607 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 17:39:08,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 17:39:08,607 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:39:08,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:39:08,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1383423266, now seen corresponding path program 1 times [2023-12-20 17:39:08,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:39:08,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502232451] [2023-12-20 17:39:08,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:39:08,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:39:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:39:08,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:39:08,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:39:08,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502232451] [2023-12-20 17:39:08,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502232451] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:39:08,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:39:08,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:39:08,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029420566] [2023-12-20 17:39:08,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:39:08,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:39:08,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:39:08,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:39:08,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:39:08,763 INFO L87 Difference]: Start difference. First operand 1840 states and 2484 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:39:10,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:39:10,464 INFO L93 Difference]: Finished difference Result 4551 states and 6284 transitions. [2023-12-20 17:39:10,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:39:10,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-20 17:39:10,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:39:10,472 INFO L225 Difference]: With dead ends: 4551 [2023-12-20 17:39:10,472 INFO L226 Difference]: Without dead ends: 2712 [2023-12-20 17:39:10,474 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 17:39:10,475 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 501 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:39:10,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 883 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 17:39:10,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2712 states. [2023-12-20 17:39:10,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2712 to 2710. [2023-12-20 17:39:10,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2710 states, 2709 states have (on average 1.3008490217792543) internal successors, (3524), 2709 states have internal predecessors, (3524), 0 states have call successors, (0), 0 states 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 17:39:10,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2710 states to 2710 states and 3524 transitions. [2023-12-20 17:39:10,504 INFO L78 Accepts]: Start accepts. Automaton has 2710 states and 3524 transitions. Word has length 75 [2023-12-20 17:39:10,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:39:10,504 INFO L495 AbstractCegarLoop]: Abstraction has 2710 states and 3524 transitions. [2023-12-20 17:39:10,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:39:10,504 INFO L276 IsEmpty]: Start isEmpty. Operand 2710 states and 3524 transitions. [2023-12-20 17:39:10,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-20 17:39:10,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:39:10,506 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-12-20 17:39:10,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 17:39:10,507 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:39:10,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:39:10,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1840463593, now seen corresponding path program 1 times [2023-12-20 17:39:10,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:39:10,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415139159] [2023-12-20 17:39:10,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:39:10,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:39:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:39:10,680 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-20 17:39:10,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:39:10,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415139159] [2023-12-20 17:39:10,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415139159] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:39:10,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:39:10,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:39:10,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408162631] [2023-12-20 17:39:10,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:39:10,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:39:10,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:39:10,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:39:10,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:39:10,682 INFO L87 Difference]: Start difference. First operand 2710 states and 3524 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:39:12,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:39:12,258 INFO L93 Difference]: Finished difference Result 7983 states and 10363 transitions. [2023-12-20 17:39:12,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:39:12,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2023-12-20 17:39:12,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:39:12,271 INFO L225 Difference]: With dead ends: 7983 [2023-12-20 17:39:12,272 INFO L226 Difference]: Without dead ends: 4420 [2023-12-20 17:39:12,275 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 17:39:12,276 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 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, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:39:12,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 17:39:12,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4420 states. [2023-12-20 17:39:12,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4420 to 3565. [2023-12-20 17:39:12,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3565 states, 3564 states have (on average 1.1778900112233446) internal successors, (4198), 3564 states have internal predecessors, (4198), 0 states have call successors, (0), 0 states 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 17:39:12,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3565 states to 3565 states and 4198 transitions. [2023-12-20 17:39:12,323 INFO L78 Accepts]: Start accepts. Automaton has 3565 states and 4198 transitions. Word has length 144 [2023-12-20 17:39:12,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:39:12,323 INFO L495 AbstractCegarLoop]: Abstraction has 3565 states and 4198 transitions. [2023-12-20 17:39:12,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:39:12,323 INFO L276 IsEmpty]: Start isEmpty. Operand 3565 states and 4198 transitions. [2023-12-20 17:39:12,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-20 17:39:12,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:39:12,325 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:39:12,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 17:39:12,325 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:39:12,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:39:12,325 INFO L85 PathProgramCache]: Analyzing trace with hash -557637259, now seen corresponding path program 1 times [2023-12-20 17:39:12,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:39:12,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771360271] [2023-12-20 17:39:12,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:39:12,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:39:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:39:12,438 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:39:12,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:39:12,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771360271] [2023-12-20 17:39:12,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771360271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:39:12,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:39:12,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:39:12,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898854840] [2023-12-20 17:39:12,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:39:12,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:39:12,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:39:12,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:39:12,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:39:12,440 INFO L87 Difference]: Start difference. First operand 3565 states and 4198 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 17:39:13,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:39:13,847 INFO L93 Difference]: Finished difference Result 9262 states and 11077 transitions. [2023-12-20 17:39:13,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:39:13,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 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 157 [2023-12-20 17:39:13,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:39:13,859 INFO L225 Difference]: With dead ends: 9262 [2023-12-20 17:39:13,859 INFO L226 Difference]: Without dead ends: 5698 [2023-12-20 17:39:13,862 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 17:39:13,863 INFO L413 NwaCegarLoop]: 724 mSDtfsCounter, 496 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:39:13,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 781 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 17:39:13,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5698 states. [2023-12-20 17:39:13,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5698 to 5698. [2023-12-20 17:39:13,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5698 states, 5697 states have (on average 1.1597331929085484) internal successors, (6607), 5697 states have internal predecessors, (6607), 0 states have call successors, (0), 0 states 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 17:39:13,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5698 states to 5698 states and 6607 transitions. [2023-12-20 17:39:13,919 INFO L78 Accepts]: Start accepts. Automaton has 5698 states and 6607 transitions. Word has length 157 [2023-12-20 17:39:13,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:39:13,919 INFO L495 AbstractCegarLoop]: Abstraction has 5698 states and 6607 transitions. [2023-12-20 17:39:13,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 17:39:13,920 INFO L276 IsEmpty]: Start isEmpty. Operand 5698 states and 6607 transitions. [2023-12-20 17:39:13,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-20 17:39:13,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:39:13,921 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:39:13,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 17:39:13,921 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:39:13,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:39:13,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1430572624, now seen corresponding path program 1 times [2023-12-20 17:39:13,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:39:13,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647961330] [2023-12-20 17:39:13,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:39:13,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:39:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:39:14,100 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 7 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:39:14,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:39:14,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647961330] [2023-12-20 17:39:14,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647961330] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:39:14,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114203055] [2023-12-20 17:39:14,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:39:14,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:39:14,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:39:14,103 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 17:39:14,128 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 17:39:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:39:14,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:39:14,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:39:14,348 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 7 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:39:14,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:39:14,532 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:39:14,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114203055] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 17:39:14,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-20 17:39:14,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-12-20 17:39:14,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243331966] [2023-12-20 17:39:14,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:39:14,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:39:14,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:39:14,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:39:14,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:39:14,534 INFO L87 Difference]: Start difference. First operand 5698 states and 6607 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states 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 17:39:17,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:39:17,196 INFO L93 Difference]: Finished difference Result 16960 states and 19952 transitions. [2023-12-20 17:39:17,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:39:17,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 159 [2023-12-20 17:39:17,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:39:17,224 INFO L225 Difference]: With dead ends: 16960 [2023-12-20 17:39:17,224 INFO L226 Difference]: Without dead ends: 10383 [2023-12-20 17:39:17,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 315 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 17:39:17,236 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 1048 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2184 mSolverCounterSat, 1043 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 3227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1043 IncrementalHoareTripleChecker+Valid, 2184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:39:17,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 149 Invalid, 3227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1043 Valid, 2184 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 17:39:17,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10383 states. [2023-12-20 17:39:17,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10383 to 10378. [2023-12-20 17:39:17,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10378 states, 10377 states have (on average 1.1553435482316663) internal successors, (11989), 10377 states have internal predecessors, (11989), 0 states have call successors, (0), 0 states 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 17:39:17,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10378 states to 10378 states and 11989 transitions. [2023-12-20 17:39:17,381 INFO L78 Accepts]: Start accepts. Automaton has 10378 states and 11989 transitions. Word has length 159 [2023-12-20 17:39:17,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:39:17,382 INFO L495 AbstractCegarLoop]: Abstraction has 10378 states and 11989 transitions. [2023-12-20 17:39:17,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states 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 17:39:17,382 INFO L276 IsEmpty]: Start isEmpty. Operand 10378 states and 11989 transitions. [2023-12-20 17:39:17,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-12-20 17:39:17,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:39:17,385 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:39:17,394 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 17:39:17,589 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,SelfDestructingSolverStorable5 [2023-12-20 17:39:17,590 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:39:17,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:39:17,591 INFO L85 PathProgramCache]: Analyzing trace with hash 143293806, now seen corresponding path program 1 times [2023-12-20 17:39:17,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:39:17,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035286975] [2023-12-20 17:39:17,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:39:17,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:39:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:39:17,903 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 11 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:39:17,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:39:17,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035286975] [2023-12-20 17:39:17,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035286975] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:39:17,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739525360] [2023-12-20 17:39:17,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:39:17,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:39:17,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:39:17,905 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 17:39:17,932 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 17:39:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:39:17,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:39:18,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:39:18,138 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 148 proven. 73 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 17:39:18,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:39:18,320 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 17:39:18,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739525360] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 17:39:18,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-20 17:39:18,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 6 [2023-12-20 17:39:18,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743792562] [2023-12-20 17:39:18,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:39:18,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:39:18,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:39:18,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:39:18,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:39:18,322 INFO L87 Difference]: Start difference. First operand 10378 states and 11989 transitions. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states 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 17:39:20,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:39:20,782 INFO L93 Difference]: Finished difference Result 28864 states and 33387 transitions. [2023-12-20 17:39:20,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:39:20,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 233 [2023-12-20 17:39:20,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:39:20,822 INFO L225 Difference]: With dead ends: 28864 [2023-12-20 17:39:20,822 INFO L226 Difference]: Without dead ends: 18487 [2023-12-20 17:39:20,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:39:20,834 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 839 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 2269 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 2781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 2269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:39:20,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 183 Invalid, 2781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [512 Valid, 2269 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 17:39:20,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18487 states. [2023-12-20 17:39:21,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18487 to 18481. [2023-12-20 17:39:21,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18481 states, 18480 states have (on average 1.1429112554112555) internal successors, (21121), 18480 states have internal predecessors, (21121), 0 states have call successors, (0), 0 states 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 17:39:21,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18481 states to 18481 states and 21121 transitions. [2023-12-20 17:39:21,066 INFO L78 Accepts]: Start accepts. Automaton has 18481 states and 21121 transitions. Word has length 233 [2023-12-20 17:39:21,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:39:21,067 INFO L495 AbstractCegarLoop]: Abstraction has 18481 states and 21121 transitions. [2023-12-20 17:39:21,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states 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 17:39:21,067 INFO L276 IsEmpty]: Start isEmpty. Operand 18481 states and 21121 transitions. [2023-12-20 17:39:21,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2023-12-20 17:39:21,071 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:39:21,071 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:39:21,077 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 17:39:21,276 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,SelfDestructingSolverStorable6 [2023-12-20 17:39:21,277 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:39:21,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:39:21,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1706038196, now seen corresponding path program 1 times [2023-12-20 17:39:21,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:39:21,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349890017] [2023-12-20 17:39:21,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:39:21,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:39:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:39:21,585 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 370 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-12-20 17:39:21,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:39:21,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349890017] [2023-12-20 17:39:21,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349890017] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:39:21,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:39:21,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:39:21,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471724657] [2023-12-20 17:39:21,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:39:21,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:39:21,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:39:21,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:39:21,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:39:21,587 INFO L87 Difference]: Start difference. First operand 18481 states and 21121 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states 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 17:39:23,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:39:23,445 INFO L93 Difference]: Finished difference Result 50635 states and 57338 transitions. [2023-12-20 17:39:23,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:39:23,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 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 338 [2023-12-20 17:39:23,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:39:23,489 INFO L225 Difference]: With dead ends: 50635 [2023-12-20 17:39:23,490 INFO L226 Difference]: Without dead ends: 32155 [2023-12-20 17:39:23,506 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 17:39:23,507 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 426 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1298 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 1499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:39:23,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 666 Invalid, 1499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1298 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 17:39:23,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32155 states. [2023-12-20 17:39:23,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32155 to 29569. [2023-12-20 17:39:23,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29569 states, 29568 states have (on average 1.1311214826839826) internal successors, (33445), 29568 states have internal predecessors, (33445), 0 states have call successors, (0), 0 states 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 17:39:23,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29569 states to 29569 states and 33445 transitions. [2023-12-20 17:39:23,796 INFO L78 Accepts]: Start accepts. Automaton has 29569 states and 33445 transitions. Word has length 338 [2023-12-20 17:39:23,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:39:23,796 INFO L495 AbstractCegarLoop]: Abstraction has 29569 states and 33445 transitions. [2023-12-20 17:39:23,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states 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 17:39:23,796 INFO L276 IsEmpty]: Start isEmpty. Operand 29569 states and 33445 transitions. [2023-12-20 17:39:23,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2023-12-20 17:39:23,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:39:23,800 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-20 17:39:23,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 17:39:23,800 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:39:23,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:39:23,801 INFO L85 PathProgramCache]: Analyzing trace with hash 388524497, now seen corresponding path program 1 times [2023-12-20 17:39:23,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:39:23,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547322140] [2023-12-20 17:39:23,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:39:23,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:39:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:39:24,026 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 387 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-12-20 17:39:24,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:39:24,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547322140] [2023-12-20 17:39:24,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547322140] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:39:24,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:39:24,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:39:24,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311764053] [2023-12-20 17:39:24,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:39:24,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:39:24,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:39:24,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:39:24,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:39:24,028 INFO L87 Difference]: Start difference. First operand 29569 states and 33445 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states 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 17:39:26,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:39:26,026 INFO L93 Difference]: Finished difference Result 68518 states and 77906 transitions. [2023-12-20 17:39:26,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:39:26,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 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 339 [2023-12-20 17:39:26,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:39:26,077 INFO L225 Difference]: With dead ends: 68518 [2023-12-20 17:39:26,077 INFO L226 Difference]: Without dead ends: 38949 [2023-12-20 17:39:26,101 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 17:39:26,101 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 436 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:39:26,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 638 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 17:39:26,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38949 states. [2023-12-20 17:39:26,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38949 to 36817. [2023-12-20 17:39:26,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36817 states, 36816 states have (on average 1.1341264667535853) internal successors, (41754), 36816 states have internal predecessors, (41754), 0 states have call successors, (0), 0 states 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 17:39:26,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36817 states to 36817 states and 41754 transitions. [2023-12-20 17:39:26,522 INFO L78 Accepts]: Start accepts. Automaton has 36817 states and 41754 transitions. Word has length 339 [2023-12-20 17:39:26,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:39:26,522 INFO L495 AbstractCegarLoop]: Abstraction has 36817 states and 41754 transitions. [2023-12-20 17:39:26,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states 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 17:39:26,522 INFO L276 IsEmpty]: Start isEmpty. Operand 36817 states and 41754 transitions. [2023-12-20 17:39:26,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2023-12-20 17:39:26,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:39:26,531 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-20 17:39:26,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 17:39:26,531 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:39:26,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:39:26,531 INFO L85 PathProgramCache]: Analyzing trace with hash 502578760, now seen corresponding path program 1 times [2023-12-20 17:39:26,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:39:26,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077698842] [2023-12-20 17:39:26,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:39:26,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:39:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:39:26,948 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 462 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 17:39:26,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:39:26,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077698842] [2023-12-20 17:39:26,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077698842] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:39:26,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:39:26,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:39:26,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715098300] [2023-12-20 17:39:26,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:39:26,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:39:26,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:39:26,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:39:26,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:39:26,950 INFO L87 Difference]: Start difference. First operand 36817 states and 41754 transitions. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states 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 17:39:29,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:39:29,965 INFO L93 Difference]: Finished difference Result 99667 states and 112881 transitions. [2023-12-20 17:39:29,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:39:29,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 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 343 [2023-12-20 17:39:29,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:39:30,048 INFO L225 Difference]: With dead ends: 99667 [2023-12-20 17:39:30,048 INFO L226 Difference]: Without dead ends: 62851 [2023-12-20 17:39:30,062 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 17:39:30,063 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 826 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 2312 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 2755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 2312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:39:30,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 189 Invalid, 2755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 2312 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 17:39:30,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62851 states. [2023-12-20 17:39:30,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62851 to 57735. [2023-12-20 17:39:30,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57735 states, 57734 states have (on average 1.1359684068313298) internal successors, (65584), 57734 states have internal predecessors, (65584), 0 states have call successors, (0), 0 states 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 17:39:30,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57735 states to 57735 states and 65584 transitions. [2023-12-20 17:39:30,861 INFO L78 Accepts]: Start accepts. Automaton has 57735 states and 65584 transitions. Word has length 343 [2023-12-20 17:39:30,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:39:30,861 INFO L495 AbstractCegarLoop]: Abstraction has 57735 states and 65584 transitions. [2023-12-20 17:39:30,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states 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 17:39:30,861 INFO L276 IsEmpty]: Start isEmpty. Operand 57735 states and 65584 transitions. [2023-12-20 17:39:30,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2023-12-20 17:39:30,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:39:30,865 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:39:30,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 17:39:30,866 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:39:30,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:39:30,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1943948952, now seen corresponding path program 1 times [2023-12-20 17:39:30,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:39:30,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245113601] [2023-12-20 17:39:30,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:39:30,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:39:31,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:39:31,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:39:31,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:39:31,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245113601] [2023-12-20 17:39:31,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245113601] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:39:31,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:39:31,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:39:31,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746359489] [2023-12-20 17:39:31,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:39:31,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:39:31,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:39:31,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:39:31,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:39:31,193 INFO L87 Difference]: Start difference. First operand 57735 states and 65584 transitions. Second operand has 4 states, 4 states have (on average 86.0) internal successors, (344), 3 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 17:39:34,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:39:34,113 INFO L93 Difference]: Finished difference Result 138522 states and 157086 transitions. [2023-12-20 17:39:34,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:39:34,114 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 3 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 344 [2023-12-20 17:39:34,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:39:34,199 INFO L225 Difference]: With dead ends: 138522 [2023-12-20 17:39:34,199 INFO L226 Difference]: Without dead ends: 79086 [2023-12-20 17:39:34,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:39:34,219 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 567 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2719 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 2892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 2719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:39:34,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 398 Invalid, 2892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 2719 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 17:39:34,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79086 states. [2023-12-20 17:39:35,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79086 to 77771. [2023-12-20 17:39:35,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77771 states, 77770 states have (on average 1.1287643050019287) internal successors, (87784), 77770 states have internal predecessors, (87784), 0 states have call successors, (0), 0 states 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 17:39:35,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77771 states to 77771 states and 87784 transitions. [2023-12-20 17:39:35,309 INFO L78 Accepts]: Start accepts. Automaton has 77771 states and 87784 transitions. Word has length 344 [2023-12-20 17:39:35,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:39:35,310 INFO L495 AbstractCegarLoop]: Abstraction has 77771 states and 87784 transitions. [2023-12-20 17:39:35,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 3 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 17:39:35,310 INFO L276 IsEmpty]: Start isEmpty. Operand 77771 states and 87784 transitions. [2023-12-20 17:39:35,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2023-12-20 17:39:35,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:39:35,315 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:39:35,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 17:39:35,315 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:39:35,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:39:35,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1216748226, now seen corresponding path program 1 times [2023-12-20 17:39:35,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:39:35,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125627297] [2023-12-20 17:39:35,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:39:35,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:39:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:39:35,788 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 223 proven. 4 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-12-20 17:39:35,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:39:35,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125627297] [2023-12-20 17:39:35,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125627297] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:39:35,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748261302] [2023-12-20 17:39:35,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:39:35,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:39:35,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:39:35,790 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 17:39:35,791 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 17:39:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:39:35,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:39:35,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:39:36,017 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 223 proven. 4 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-12-20 17:39:36,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:39:36,319 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2023-12-20 17:39:36,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748261302] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 17:39:36,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-20 17:39:36,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-12-20 17:39:36,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497142121] [2023-12-20 17:39:36,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:39:36,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:39:36,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:39:36,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:39:36,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:39:36,321 INFO L87 Difference]: Start difference. First operand 77771 states and 87784 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 17:39:38,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:39:38,219 INFO L93 Difference]: Finished difference Result 157648 states and 177843 transitions. [2023-12-20 17:39:38,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:39:38,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 358 [2023-12-20 17:39:38,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:39:38,312 INFO L225 Difference]: With dead ends: 157648 [2023-12-20 17:39:38,312 INFO L226 Difference]: Without dead ends: 79871 [2023-12-20 17:39:38,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 718 GetRequests, 714 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:39:38,358 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 485 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:39:38,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 706 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 17:39:38,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79871 states. [2023-12-20 17:39:39,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79871 to 79405. [2023-12-20 17:39:39,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79405 states, 79404 states have (on average 1.1147045488892247) internal successors, (88512), 79404 states have internal predecessors, (88512), 0 states have call successors, (0), 0 states 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 17:39:39,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79405 states to 79405 states and 88512 transitions. [2023-12-20 17:39:39,768 INFO L78 Accepts]: Start accepts. Automaton has 79405 states and 88512 transitions. Word has length 358 [2023-12-20 17:39:39,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:39:39,768 INFO L495 AbstractCegarLoop]: Abstraction has 79405 states and 88512 transitions. [2023-12-20 17:39:39,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 17:39:39,768 INFO L276 IsEmpty]: Start isEmpty. Operand 79405 states and 88512 transitions. [2023-12-20 17:39:39,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2023-12-20 17:39:39,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:39:39,794 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:39:39,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 17:39:40,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:39:40,004 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:39:40,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:39:40,005 INFO L85 PathProgramCache]: Analyzing trace with hash 222867881, now seen corresponding path program 1 times [2023-12-20 17:39:40,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:39:40,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444395669] [2023-12-20 17:39:40,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:39:40,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:39:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:39:40,455 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2023-12-20 17:39:40,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:39:40,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444395669] [2023-12-20 17:39:40,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444395669] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:39:40,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:39:40,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:39:40,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039323013] [2023-12-20 17:39:40,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:39:40,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:39:40,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:39:40,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:39:40,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:39:40,459 INFO L87 Difference]: Start difference. First operand 79405 states and 88512 transitions. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states 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 17:39:42,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:39:42,588 INFO L93 Difference]: Finished difference Result 169038 states and 187932 transitions. [2023-12-20 17:39:42,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:39:42,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 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 571 [2023-12-20 17:39:42,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:39:42,696 INFO L225 Difference]: With dead ends: 169038 [2023-12-20 17:39:42,696 INFO L226 Difference]: Without dead ends: 88359 [2023-12-20 17:39:42,737 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 17:39:42,738 INFO L413 NwaCegarLoop]: 757 mSDtfsCounter, 444 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:39:42,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 811 Invalid, 1361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1277 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 17:39:42,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88359 states. [2023-12-20 17:39:43,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88359 to 87486. [2023-12-20 17:39:43,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87486 states, 87485 states have (on average 1.1064182431273932) internal successors, (96795), 87485 states have internal predecessors, (96795), 0 states have call successors, (0), 0 states 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 17:39:43,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87486 states to 87486 states and 96795 transitions. [2023-12-20 17:39:43,864 INFO L78 Accepts]: Start accepts. Automaton has 87486 states and 96795 transitions. Word has length 571 [2023-12-20 17:39:43,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:39:43,865 INFO L495 AbstractCegarLoop]: Abstraction has 87486 states and 96795 transitions. [2023-12-20 17:39:43,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states 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 17:39:43,865 INFO L276 IsEmpty]: Start isEmpty. Operand 87486 states and 96795 transitions. [2023-12-20 17:39:43,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2023-12-20 17:39:43,884 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:39:43,885 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:39:43,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 17:39:43,885 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:39:43,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:39:43,885 INFO L85 PathProgramCache]: Analyzing trace with hash 2052356115, now seen corresponding path program 1 times [2023-12-20 17:39:43,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:39:43,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157625491] [2023-12-20 17:39:43,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:39:43,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:39:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:39:44,071 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 346 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-12-20 17:39:44,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:39:44,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157625491] [2023-12-20 17:39:44,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157625491] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:39:44,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:39:44,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:39:44,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054259520] [2023-12-20 17:39:44,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:39:44,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:39:44,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:39:44,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:39:44,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:39:44,157 INFO L87 Difference]: Start difference. First operand 87486 states and 96795 transitions. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states 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 17:39:45,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:39:45,901 INFO L93 Difference]: Finished difference Result 183051 states and 202756 transitions. [2023-12-20 17:39:45,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:39:45,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 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 582 [2023-12-20 17:39:45,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:39:46,024 INFO L225 Difference]: With dead ends: 183051 [2023-12-20 17:39:46,024 INFO L226 Difference]: Without dead ends: 95991 [2023-12-20 17:39:46,069 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 17:39:46,069 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 497 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:39:46,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 679 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 17:39:46,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95991 states. [2023-12-20 17:39:47,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95991 to 95562. [2023-12-20 17:39:47,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95562 states, 95561 states have (on average 1.1002814955892048) internal successors, (105144), 95561 states have internal predecessors, (105144), 0 states have call successors, (0), 0 states 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 17:39:47,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95562 states to 95562 states and 105144 transitions. [2023-12-20 17:39:47,411 INFO L78 Accepts]: Start accepts. Automaton has 95562 states and 105144 transitions. Word has length 582 [2023-12-20 17:39:47,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:39:47,411 INFO L495 AbstractCegarLoop]: Abstraction has 95562 states and 105144 transitions. [2023-12-20 17:39:47,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states 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 17:39:47,412 INFO L276 IsEmpty]: Start isEmpty. Operand 95562 states and 105144 transitions. [2023-12-20 17:39:47,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2023-12-20 17:39:47,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:39:47,430 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 17:39:47,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 17:39:47,430 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:39:47,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:39:47,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1642705036, now seen corresponding path program 1 times [2023-12-20 17:39:47,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:39:47,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254834263] [2023-12-20 17:39:47,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:39:47,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:39:47,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:39:48,204 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2023-12-20 17:39:48,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:39:48,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254834263] [2023-12-20 17:39:48,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254834263] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:39:48,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:39:48,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:39:48,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966625538] [2023-12-20 17:39:48,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:39:48,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:39:48,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:39:48,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:39:48,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:39:48,208 INFO L87 Difference]: Start difference. First operand 95562 states and 105144 transitions. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states 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 17:39:49,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:39:49,766 INFO L93 Difference]: Finished difference Result 190695 states and 209857 transitions. [2023-12-20 17:39:49,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:39:49,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 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 596 [2023-12-20 17:39:49,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:39:49,855 INFO L225 Difference]: With dead ends: 190695 [2023-12-20 17:39:49,855 INFO L226 Difference]: Without dead ends: 95559 [2023-12-20 17:39:49,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 17:39:49,887 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 625 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:39:49,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 546 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 17:39:49,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95559 states. [2023-12-20 17:39:50,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95559 to 95132. [2023-12-20 17:39:50,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95132 states, 95131 states have (on average 1.1003037916136695) internal successors, (104673), 95131 states have internal predecessors, (104673), 0 states have call successors, (0), 0 states 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 17:39:50,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95132 states to 95132 states and 104673 transitions. [2023-12-20 17:39:50,983 INFO L78 Accepts]: Start accepts. Automaton has 95132 states and 104673 transitions. Word has length 596 [2023-12-20 17:39:50,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:39:50,984 INFO L495 AbstractCegarLoop]: Abstraction has 95132 states and 104673 transitions. [2023-12-20 17:39:50,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states 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 17:39:50,984 INFO L276 IsEmpty]: Start isEmpty. Operand 95132 states and 104673 transitions. [2023-12-20 17:39:51,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2023-12-20 17:39:51,001 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:39:51,002 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:39:51,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 17:39:51,002 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:39:51,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:39:51,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1216983569, now seen corresponding path program 1 times [2023-12-20 17:39:51,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:39:51,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497737270] [2023-12-20 17:39:51,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:39:51,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:39:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:39:51,897 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-20 17:39:51,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:39:51,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497737270] [2023-12-20 17:39:51,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497737270] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:39:51,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:39:51,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:39:51,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100322099] [2023-12-20 17:39:51,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:39:51,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:39:51,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:39:51,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:39:51,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:39:51,899 INFO L87 Difference]: Start difference. First operand 95132 states and 104673 transitions. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states 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 17:39:53,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:39:53,817 INFO L93 Difference]: Finished difference Result 201341 states and 221865 transitions. [2023-12-20 17:39:53,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:39:53,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 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 601 [2023-12-20 17:39:53,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:39:53,952 INFO L225 Difference]: With dead ends: 201341 [2023-12-20 17:39:53,952 INFO L226 Difference]: Without dead ends: 106635 [2023-12-20 17:39:53,999 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 17:39:54,000 INFO L413 NwaCegarLoop]: 701 mSDtfsCounter, 104 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:39:54,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 759 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 17:39:54,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106635 states. [2023-12-20 17:39:55,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106635 to 102799. [2023-12-20 17:39:55,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102799 states, 102798 states have (on average 1.0987081460728807) internal successors, (112945), 102798 states have internal predecessors, (112945), 0 states have call successors, (0), 0 states 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 17:39:55,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102799 states to 102799 states and 112945 transitions. [2023-12-20 17:39:55,715 INFO L78 Accepts]: Start accepts. Automaton has 102799 states and 112945 transitions. Word has length 601 [2023-12-20 17:39:55,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:39:55,715 INFO L495 AbstractCegarLoop]: Abstraction has 102799 states and 112945 transitions. [2023-12-20 17:39:55,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states 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 17:39:55,715 INFO L276 IsEmpty]: Start isEmpty. Operand 102799 states and 112945 transitions. [2023-12-20 17:39:55,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2023-12-20 17:39:55,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:39:55,731 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:39:55,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 17:39:55,732 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:39:55,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:39:55,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1628016253, now seen corresponding path program 1 times [2023-12-20 17:39:55,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:39:55,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373732652] [2023-12-20 17:39:55,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:39:55,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:39:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:39:56,207 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-20 17:39:56,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:39:56,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373732652] [2023-12-20 17:39:56,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373732652] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:39:56,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:39:56,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:39:56,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786203355] [2023-12-20 17:39:56,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:39:56,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:39:56,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:39:56,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:39:56,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:39:56,209 INFO L87 Difference]: Start difference. First operand 102799 states and 112945 transitions. Second operand has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states 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 17:39:58,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:39:58,067 INFO L93 Difference]: Finished difference Result 214542 states and 235818 transitions. [2023-12-20 17:39:58,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:39:58,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 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 629 [2023-12-20 17:39:58,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:39:58,184 INFO L225 Difference]: With dead ends: 214542 [2023-12-20 17:39:58,184 INFO L226 Difference]: Without dead ends: 112169 [2023-12-20 17:39:58,231 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 17:39:58,232 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 117 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:39:58,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 334 Invalid, 1372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 17:39:58,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112169 states. [2023-12-20 17:39:59,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112169 to 109608. [2023-12-20 17:39:59,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109608 states, 109607 states have (on average 1.097156203527147) internal successors, (120256), 109607 states have internal predecessors, (120256), 0 states have call successors, (0), 0 states 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 17:39:59,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109608 states to 109608 states and 120256 transitions. [2023-12-20 17:39:59,913 INFO L78 Accepts]: Start accepts. Automaton has 109608 states and 120256 transitions. Word has length 629 [2023-12-20 17:39:59,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:39:59,913 INFO L495 AbstractCegarLoop]: Abstraction has 109608 states and 120256 transitions. [2023-12-20 17:39:59,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states 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 17:39:59,913 INFO L276 IsEmpty]: Start isEmpty. Operand 109608 states and 120256 transitions. [2023-12-20 17:39:59,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2023-12-20 17:39:59,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:39:59,942 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 17:39:59,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 17:39:59,942 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:39:59,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:39:59,942 INFO L85 PathProgramCache]: Analyzing trace with hash 628797413, now seen corresponding path program 1 times [2023-12-20 17:39:59,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:39:59,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585182327] [2023-12-20 17:39:59,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:39:59,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:40:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:00,171 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2023-12-20 17:40:00,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:40:00,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585182327] [2023-12-20 17:40:00,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585182327] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:40:00,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:40:00,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:40:00,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174864787] [2023-12-20 17:40:00,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:40:00,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:40:00,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:40:00,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:40:00,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:40:00,292 INFO L87 Difference]: Start difference. First operand 109608 states and 120256 transitions. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states 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 17:40:02,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:40:02,216 INFO L93 Difference]: Finished difference Result 221789 states and 243236 transitions. [2023-12-20 17:40:02,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:40:02,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 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 688 [2023-12-20 17:40:02,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:40:02,369 INFO L225 Difference]: With dead ends: 221789 [2023-12-20 17:40:02,369 INFO L226 Difference]: Without dead ends: 111326 [2023-12-20 17:40:02,418 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 17:40:02,419 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 443 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:40:02,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 773 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 17:40:02,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111326 states. [2023-12-20 17:40:03,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111326 to 106623. [2023-12-20 17:40:03,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106623 states, 106622 states have (on average 1.0976721502129017) internal successors, (117036), 106622 states have internal predecessors, (117036), 0 states have call successors, (0), 0 states 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 17:40:03,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106623 states to 106623 states and 117036 transitions. [2023-12-20 17:40:03,839 INFO L78 Accepts]: Start accepts. Automaton has 106623 states and 117036 transitions. Word has length 688 [2023-12-20 17:40:03,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:40:03,840 INFO L495 AbstractCegarLoop]: Abstraction has 106623 states and 117036 transitions. [2023-12-20 17:40:03,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states 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 17:40:03,840 INFO L276 IsEmpty]: Start isEmpty. Operand 106623 states and 117036 transitions. [2023-12-20 17:40:03,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2023-12-20 17:40:03,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:40:03,866 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:40:03,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 17:40:03,866 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:40:03,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:40:03,867 INFO L85 PathProgramCache]: Analyzing trace with hash 551277713, now seen corresponding path program 1 times [2023-12-20 17:40:03,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:40:03,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913534184] [2023-12-20 17:40:03,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:03,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:40:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:04,582 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-20 17:40:04,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:40:04,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913534184] [2023-12-20 17:40:04,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913534184] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:40:04,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:40:04,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:40:04,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350584492] [2023-12-20 17:40:04,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:40:04,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:40:04,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:40:04,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:40:04,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:40:04,584 INFO L87 Difference]: Start difference. First operand 106623 states and 117036 transitions. Second operand has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states 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 17:40:06,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:40:06,629 INFO L93 Difference]: Finished difference Result 224329 states and 246269 transitions. [2023-12-20 17:40:06,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:40:06,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 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 692 [2023-12-20 17:40:06,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:40:06,789 INFO L225 Difference]: With dead ends: 224329 [2023-12-20 17:40:06,789 INFO L226 Difference]: Without dead ends: 117704 [2023-12-20 17:40:06,851 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 17:40:06,851 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 125 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:40:06,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 298 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 17:40:06,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117704 states. [2023-12-20 17:40:08,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117704 to 106199. [2023-12-20 17:40:08,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106199 states, 106198 states have (on average 1.090255937023296) internal successors, (115783), 106198 states have internal predecessors, (115783), 0 states have call successors, (0), 0 states 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 17:40:08,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106199 states to 106199 states and 115783 transitions. [2023-12-20 17:40:08,479 INFO L78 Accepts]: Start accepts. Automaton has 106199 states and 115783 transitions. Word has length 692 [2023-12-20 17:40:08,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:40:08,479 INFO L495 AbstractCegarLoop]: Abstraction has 106199 states and 115783 transitions. [2023-12-20 17:40:08,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states 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 17:40:08,479 INFO L276 IsEmpty]: Start isEmpty. Operand 106199 states and 115783 transitions. [2023-12-20 17:40:08,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2023-12-20 17:40:08,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:40:08,506 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:40:08,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 17:40:08,507 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:40:08,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:40:08,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1728273095, now seen corresponding path program 1 times [2023-12-20 17:40:08,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:40:08,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670179890] [2023-12-20 17:40:08,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:08,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:40:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:09,029 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 386 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-12-20 17:40:09,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:40:09,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670179890] [2023-12-20 17:40:09,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670179890] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:40:09,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:40:09,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:40:09,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33654157] [2023-12-20 17:40:09,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:40:09,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:40:09,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:40:09,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:40:09,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:40:09,032 INFO L87 Difference]: Start difference. First operand 106199 states and 115783 transitions. Second operand has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:11,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:40:11,764 INFO L93 Difference]: Finished difference Result 237094 states and 258600 transitions. [2023-12-20 17:40:11,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:40:11,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 744 [2023-12-20 17:40:11,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:40:11,913 INFO L225 Difference]: With dead ends: 237094 [2023-12-20 17:40:11,913 INFO L226 Difference]: Without dead ends: 131321 [2023-12-20 17:40:11,966 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 17:40:11,966 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 587 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 2347 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 2659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 2347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:40:11,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 283 Invalid, 2659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 2347 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 17:40:12,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131321 states. [2023-12-20 17:40:13,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131321 to 118943. [2023-12-20 17:40:13,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118943 states, 118942 states have (on average 1.0804593835650989) internal successors, (128512), 118942 states have internal predecessors, (128512), 0 states have call successors, (0), 0 states 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 17:40:13,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118943 states to 118943 states and 128512 transitions. [2023-12-20 17:40:13,774 INFO L78 Accepts]: Start accepts. Automaton has 118943 states and 128512 transitions. Word has length 744 [2023-12-20 17:40:13,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:40:13,775 INFO L495 AbstractCegarLoop]: Abstraction has 118943 states and 128512 transitions. [2023-12-20 17:40:13,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:13,775 INFO L276 IsEmpty]: Start isEmpty. Operand 118943 states and 128512 transitions. [2023-12-20 17:40:13,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2023-12-20 17:40:13,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:40:13,804 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-20 17:40:13,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 17:40:13,805 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:40:13,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:40:13,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1393541060, now seen corresponding path program 1 times [2023-12-20 17:40:13,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:40:13,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10638564] [2023-12-20 17:40:13,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:13,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:40:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 392 proven. 0 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2023-12-20 17:40:14,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:40:14,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10638564] [2023-12-20 17:40:14,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10638564] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:40:14,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:40:14,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:40:14,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595293533] [2023-12-20 17:40:14,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:40:14,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:40:14,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:40:14,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:40:14,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:40:14,330 INFO L87 Difference]: Start difference. First operand 118943 states and 128512 transitions. Second operand has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:17,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:40:17,221 INFO L93 Difference]: Finished difference Result 247699 states and 267250 transitions. [2023-12-20 17:40:17,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:40:17,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 750 [2023-12-20 17:40:17,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:40:17,370 INFO L225 Difference]: With dead ends: 247699 [2023-12-20 17:40:17,370 INFO L226 Difference]: Without dead ends: 129182 [2023-12-20 17:40:17,418 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 17:40:17,418 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 590 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 2330 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 2583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 2330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:40:17,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 282 Invalid, 2583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 2330 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 17:40:17,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129182 states. [2023-12-20 17:40:18,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129182 to 118943. [2023-12-20 17:40:18,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118943 states, 118942 states have (on average 1.0800894553647997) internal successors, (128468), 118942 states have internal predecessors, (128468), 0 states have call successors, (0), 0 states 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 17:40:18,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118943 states to 118943 states and 128468 transitions. [2023-12-20 17:40:18,854 INFO L78 Accepts]: Start accepts. Automaton has 118943 states and 128468 transitions. Word has length 750 [2023-12-20 17:40:18,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:40:18,855 INFO L495 AbstractCegarLoop]: Abstraction has 118943 states and 128468 transitions. [2023-12-20 17:40:18,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:18,855 INFO L276 IsEmpty]: Start isEmpty. Operand 118943 states and 128468 transitions. [2023-12-20 17:40:19,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2023-12-20 17:40:19,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:40:19,063 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:40:19,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 17:40:19,063 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:40:19,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:40:19,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1011777862, now seen corresponding path program 1 times [2023-12-20 17:40:19,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:40:19,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317192174] [2023-12-20 17:40:19,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:19,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:40:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:20,506 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 661 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 17:40:20,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:40:20,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317192174] [2023-12-20 17:40:20,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317192174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:40:20,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:40:20,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 17:40:20,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360678271] [2023-12-20 17:40:20,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:40:20,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 17:40:20,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:40:20,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 17:40:20,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:40:20,509 INFO L87 Difference]: Start difference. First operand 118943 states and 128468 transitions. Second operand has 6 states, 6 states have (on average 128.83333333333334) internal successors, (773), 5 states have internal predecessors, (773), 0 states have call successors, (0), 0 states 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 17:40:23,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:40:23,630 INFO L93 Difference]: Finished difference Result 235040 states and 253714 transitions. [2023-12-20 17:40:23,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 17:40:23,631 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 128.83333333333334) internal successors, (773), 5 states have internal predecessors, (773), 0 states have call successors, (0), 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 776 [2023-12-20 17:40:23,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:40:23,763 INFO L225 Difference]: With dead ends: 235040 [2023-12-20 17:40:23,764 INFO L226 Difference]: Without dead ends: 116523 [2023-12-20 17:40:23,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:40:23,812 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 1462 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 3679 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 4005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 3679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:40:23,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1462 Valid, 235 Invalid, 4005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 3679 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 17:40:23,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116523 states. [2023-12-20 17:40:25,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116523 to 114240. [2023-12-20 17:40:25,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114240 states, 114239 states have (on average 1.0788609844273847) internal successors, (123248), 114239 states have internal predecessors, (123248), 0 states have call successors, (0), 0 states 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 17:40:25,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114240 states to 114240 states and 123248 transitions. [2023-12-20 17:40:25,293 INFO L78 Accepts]: Start accepts. Automaton has 114240 states and 123248 transitions. Word has length 776 [2023-12-20 17:40:25,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:40:25,294 INFO L495 AbstractCegarLoop]: Abstraction has 114240 states and 123248 transitions. [2023-12-20 17:40:25,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.83333333333334) internal successors, (773), 5 states have internal predecessors, (773), 0 states have call successors, (0), 0 states 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 17:40:25,294 INFO L276 IsEmpty]: Start isEmpty. Operand 114240 states and 123248 transitions. [2023-12-20 17:40:25,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2023-12-20 17:40:25,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:40:25,333 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:40:25,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 17:40:25,333 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:40:25,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:40:25,334 INFO L85 PathProgramCache]: Analyzing trace with hash 790103370, now seen corresponding path program 1 times [2023-12-20 17:40:25,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:40:25,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287616184] [2023-12-20 17:40:25,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:25,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:40:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:25,926 INFO L134 CoverageAnalysis]: Checked inductivity of 996 backedges. 767 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-12-20 17:40:25,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:40:25,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287616184] [2023-12-20 17:40:25,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287616184] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:40:25,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:40:25,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:40:25,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731108934] [2023-12-20 17:40:25,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:40:25,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:40:25,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:40:25,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:40:25,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:40:25,929 INFO L87 Difference]: Start difference. First operand 114240 states and 123248 transitions. Second operand has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 17:40:28,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:40:28,873 INFO L93 Difference]: Finished difference Result 256595 states and 276394 transitions. [2023-12-20 17:40:28,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:40:28,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 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 838 [2023-12-20 17:40:28,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:40:29,013 INFO L225 Difference]: With dead ends: 256595 [2023-12-20 17:40:29,014 INFO L226 Difference]: Without dead ends: 141931 [2023-12-20 17:40:29,037 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 17:40:29,040 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 433 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 2283 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 2703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 2283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:40:29,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 216 Invalid, 2703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 2283 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 17:40:29,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141931 states. [2023-12-20 17:40:30,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141931 to 136820. [2023-12-20 17:40:30,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136820 states, 136819 states have (on average 1.0744633420796819) internal successors, (147007), 136819 states have internal predecessors, (147007), 0 states have call successors, (0), 0 states 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 17:40:30,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136820 states to 136820 states and 147007 transitions. [2023-12-20 17:40:30,838 INFO L78 Accepts]: Start accepts. Automaton has 136820 states and 147007 transitions. Word has length 838 [2023-12-20 17:40:30,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:40:30,838 INFO L495 AbstractCegarLoop]: Abstraction has 136820 states and 147007 transitions. [2023-12-20 17:40:30,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 17:40:30,839 INFO L276 IsEmpty]: Start isEmpty. Operand 136820 states and 147007 transitions. [2023-12-20 17:40:30,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 842 [2023-12-20 17:40:30,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:40:30,893 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2023-12-20 17:40:30,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 17:40:30,893 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:40:30,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:40:30,893 INFO L85 PathProgramCache]: Analyzing trace with hash -293870813, now seen corresponding path program 1 times [2023-12-20 17:40:30,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:40:30,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373540256] [2023-12-20 17:40:30,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:30,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:40:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:31,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 786 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-12-20 17:40:31,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:40:31,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373540256] [2023-12-20 17:40:31,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373540256] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:40:31,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:40:31,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:40:31,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361093178] [2023-12-20 17:40:31,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:40:31,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:40:31,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:40:31,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:40:31,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:40:31,454 INFO L87 Difference]: Start difference. First operand 136820 states and 147007 transitions. Second operand has 3 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states 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 17:40:33,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:40:33,510 INFO L93 Difference]: Finished difference Result 286011 states and 307471 transitions. [2023-12-20 17:40:33,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:40:33,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 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 841 [2023-12-20 17:40:33,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:40:33,692 INFO L225 Difference]: With dead ends: 286011 [2023-12-20 17:40:33,692 INFO L226 Difference]: Without dead ends: 149617 [2023-12-20 17:40:33,752 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 17:40:33,752 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 436 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:40:33,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 237 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 17:40:33,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149617 states. [2023-12-20 17:40:35,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149617 to 145761. [2023-12-20 17:40:35,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145761 states, 145760 states have (on average 1.073593578485181) internal successors, (156487), 145760 states have internal predecessors, (156487), 0 states have call successors, (0), 0 states 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 17:40:35,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145761 states to 145761 states and 156487 transitions. [2023-12-20 17:40:35,851 INFO L78 Accepts]: Start accepts. Automaton has 145761 states and 156487 transitions. Word has length 841 [2023-12-20 17:40:35,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:40:35,852 INFO L495 AbstractCegarLoop]: Abstraction has 145761 states and 156487 transitions. [2023-12-20 17:40:35,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states 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 17:40:35,852 INFO L276 IsEmpty]: Start isEmpty. Operand 145761 states and 156487 transitions. [2023-12-20 17:40:35,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 850 [2023-12-20 17:40:35,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:40:35,893 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:40:35,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 17:40:35,893 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:40:35,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:40:35,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1170111579, now seen corresponding path program 1 times [2023-12-20 17:40:35,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:40:35,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109542508] [2023-12-20 17:40:35,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:35,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:40:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:36,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 905 proven. 105 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-20 17:40:36,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:40:36,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109542508] [2023-12-20 17:40:36,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109542508] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:40:36,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143743565] [2023-12-20 17:40:36,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:36,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:40:36,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:40:36,736 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 17:40:36,737 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 17:40:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:37,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:40:37,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:40:37,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 947 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-20 17:40:37,587 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:40:37,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143743565] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:40:37,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:40:37,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-12-20 17:40:37,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767653856] [2023-12-20 17:40:37,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:40:37,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 17:40:37,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:40:37,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 17:40:37,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:40:37,590 INFO L87 Difference]: Start difference. First operand 145761 states and 156487 transitions. Second operand has 5 states, 5 states have (on average 141.2) internal successors, (706), 5 states have internal predecessors, (706), 0 states have call successors, (0), 0 states 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 17:40:41,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:40:41,848 INFO L93 Difference]: Finished difference Result 306905 states and 329161 transitions. [2023-12-20 17:40:41,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 17:40:41,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 141.2) internal successors, (706), 5 states have internal predecessors, (706), 0 states have call successors, (0), 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 849 [2023-12-20 17:40:41,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:40:42,035 INFO L225 Difference]: With dead ends: 306905 [2023-12-20 17:40:42,035 INFO L226 Difference]: Without dead ends: 161570 [2023-12-20 17:40:42,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 853 GetRequests, 847 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:40:42,097 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 1213 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 4024 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 4390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 4024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:40:42,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1213 Valid, 345 Invalid, 4390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 4024 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-20 17:40:42,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161570 states. [2023-12-20 17:40:43,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161570 to 156422. [2023-12-20 17:40:43,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156422 states, 156421 states have (on average 1.0680343432147856) internal successors, (167063), 156421 states have internal predecessors, (167063), 0 states have call successors, (0), 0 states 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 17:40:44,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156422 states to 156422 states and 167063 transitions. [2023-12-20 17:40:44,030 INFO L78 Accepts]: Start accepts. Automaton has 156422 states and 167063 transitions. Word has length 849 [2023-12-20 17:40:44,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:40:44,030 INFO L495 AbstractCegarLoop]: Abstraction has 156422 states and 167063 transitions. [2023-12-20 17:40:44,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 141.2) internal successors, (706), 5 states have internal predecessors, (706), 0 states have call successors, (0), 0 states 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 17:40:44,031 INFO L276 IsEmpty]: Start isEmpty. Operand 156422 states and 167063 transitions. [2023-12-20 17:40:44,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 862 [2023-12-20 17:40:44,071 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:40:44,071 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-20 17:40:44,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-20 17:40:44,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:40:44,277 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:40:44,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:40:44,277 INFO L85 PathProgramCache]: Analyzing trace with hash 133903682, now seen corresponding path program 1 times [2023-12-20 17:40:44,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:40:44,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233098637] [2023-12-20 17:40:44,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:44,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:40:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:44,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 545 proven. 0 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2023-12-20 17:40:44,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:40:44,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233098637] [2023-12-20 17:40:44,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233098637] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:40:44,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:40:44,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:40:44,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309336134] [2023-12-20 17:40:44,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:40:44,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:40:44,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:40:44,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:40:44,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:40:44,856 INFO L87 Difference]: Start difference. First operand 156422 states and 167063 transitions. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states 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 17:40:47,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:40:47,313 INFO L93 Difference]: Finished difference Result 321387 states and 343046 transitions. [2023-12-20 17:40:47,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:40:47,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 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 861 [2023-12-20 17:40:47,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:40:47,511 INFO L225 Difference]: With dead ends: 321387 [2023-12-20 17:40:47,511 INFO L226 Difference]: Without dead ends: 165391 [2023-12-20 17:40:47,579 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 17:40:47,580 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 490 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:40:47,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 235 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 17:40:47,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165391 states. [2023-12-20 17:40:49,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165391 to 143620. [2023-12-20 17:40:49,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143620 states, 143619 states have (on average 1.0637171961927043) internal successors, (152770), 143619 states have internal predecessors, (152770), 0 states have call successors, (0), 0 states 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 17:40:49,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143620 states to 143620 states and 152770 transitions. [2023-12-20 17:40:49,407 INFO L78 Accepts]: Start accepts. Automaton has 143620 states and 152770 transitions. Word has length 861 [2023-12-20 17:40:49,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:40:49,407 INFO L495 AbstractCegarLoop]: Abstraction has 143620 states and 152770 transitions. [2023-12-20 17:40:49,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states 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 17:40:49,407 INFO L276 IsEmpty]: Start isEmpty. Operand 143620 states and 152770 transitions. [2023-12-20 17:40:49,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 906 [2023-12-20 17:40:49,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:40:49,458 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-20 17:40:49,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 17:40:49,458 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:40:49,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:40:49,459 INFO L85 PathProgramCache]: Analyzing trace with hash 2014588017, now seen corresponding path program 1 times [2023-12-20 17:40:49,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:40:49,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853266134] [2023-12-20 17:40:49,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:49,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:40:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:50,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 920 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-12-20 17:40:50,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:40:50,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853266134] [2023-12-20 17:40:50,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853266134] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:40:50,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:40:50,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 17:40:50,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471804357] [2023-12-20 17:40:50,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:40:50,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 17:40:50,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:40:50,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 17:40:50,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 17:40:50,243 INFO L87 Difference]: Start difference. First operand 143620 states and 152770 transitions. Second operand has 5 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 17:40:53,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:40:53,677 INFO L93 Difference]: Finished difference Result 332799 states and 353685 transitions. [2023-12-20 17:40:53,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 17:40:53,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 0 states have call successors, (0), 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 905 [2023-12-20 17:40:53,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:40:54,149 INFO L225 Difference]: With dead ends: 332799 [2023-12-20 17:40:54,149 INFO L226 Difference]: Without dead ends: 188755 [2023-12-20 17:40:54,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 17:40:54,216 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 957 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 2709 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 3224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 2709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:40:54,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 207 Invalid, 3224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 2709 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 17:40:54,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188755 states. [2023-12-20 17:40:55,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188755 to 167022. [2023-12-20 17:40:56,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167022 states, 167021 states have (on average 1.0571844259105143) internal successors, (176572), 167021 states have internal predecessors, (176572), 0 states have call successors, (0), 0 states 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 17:40:56,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167022 states to 167022 states and 176572 transitions. [2023-12-20 17:40:56,287 INFO L78 Accepts]: Start accepts. Automaton has 167022 states and 176572 transitions. Word has length 905 [2023-12-20 17:40:56,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:40:56,288 INFO L495 AbstractCegarLoop]: Abstraction has 167022 states and 176572 transitions. [2023-12-20 17:40:56,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 17:40:56,288 INFO L276 IsEmpty]: Start isEmpty. Operand 167022 states and 176572 transitions. [2023-12-20 17:40:56,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 912 [2023-12-20 17:40:56,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:40:56,345 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-20 17:40:56,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 17:40:56,345 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:40:56,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:40:56,346 INFO L85 PathProgramCache]: Analyzing trace with hash 2034588430, now seen corresponding path program 1 times [2023-12-20 17:40:56,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:40:56,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464740781] [2023-12-20 17:40:56,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:56,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:40:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:57,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 755 proven. 160 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-12-20 17:40:57,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:40:57,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464740781] [2023-12-20 17:40:57,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464740781] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:40:57,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318822259] [2023-12-20 17:40:57,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:57,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:40:57,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:40:57,422 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 17:40:57,423 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 17:40:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:57,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-20 17:40:57,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:40:58,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 707 proven. 82 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2023-12-20 17:40:58,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:40:59,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 707 proven. 82 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2023-12-20 17:40:59,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318822259] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 17:40:59,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 17:40:59,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-12-20 17:40:59,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213860512] [2023-12-20 17:40:59,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 17:40:59,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 17:40:59,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:40:59,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 17:40:59,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:40:59,074 INFO L87 Difference]: Start difference. First operand 167022 states and 176572 transitions. Second operand has 8 states, 8 states have (on average 199.75) internal successors, (1598), 8 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states 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 17:41:07,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:41:07,867 INFO L93 Difference]: Finished difference Result 389421 states and 412290 transitions. [2023-12-20 17:41:07,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 17:41:07,867 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 199.75) internal successors, (1598), 8 states have internal predecessors, (1598), 0 states have call successors, (0), 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 911 [2023-12-20 17:41:07,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:41:08,154 INFO L225 Difference]: With dead ends: 389421 [2023-12-20 17:41:08,154 INFO L226 Difference]: Without dead ends: 222824 [2023-12-20 17:41:08,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1840 GetRequests, 1826 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2023-12-20 17:41:08,251 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 5287 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 9601 mSolverCounterSat, 1351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5287 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 10952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1351 IncrementalHoareTripleChecker+Valid, 9601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:41:08,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5287 Valid, 330 Invalid, 10952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1351 Valid, 9601 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-12-20 17:41:08,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222824 states. [2023-12-20 17:41:10,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222824 to 195147. [2023-12-20 17:41:10,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195147 states, 195146 states have (on average 1.0581103379008536) internal successors, (206486), 195146 states have internal predecessors, (206486), 0 states have call successors, (0), 0 states 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 17:41:10,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195147 states to 195147 states and 206486 transitions. [2023-12-20 17:41:10,971 INFO L78 Accepts]: Start accepts. Automaton has 195147 states and 206486 transitions. Word has length 911 [2023-12-20 17:41:10,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:41:10,971 INFO L495 AbstractCegarLoop]: Abstraction has 195147 states and 206486 transitions. [2023-12-20 17:41:10,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 199.75) internal successors, (1598), 8 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states 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 17:41:10,972 INFO L276 IsEmpty]: Start isEmpty. Operand 195147 states and 206486 transitions. [2023-12-20 17:41:11,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 978 [2023-12-20 17:41:11,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:41:11,017 INFO L195 NwaCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:41:11,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 17:41:11,218 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,SelfDestructingSolverStorable27 [2023-12-20 17:41:11,219 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:41:11,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:41:11,219 INFO L85 PathProgramCache]: Analyzing trace with hash -392551124, now seen corresponding path program 1 times [2023-12-20 17:41:11,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:41:11,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528172545] [2023-12-20 17:41:11,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:41:11,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:41:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:41:11,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1529 backedges. 627 proven. 0 refuted. 0 times theorem prover too weak. 902 trivial. 0 not checked. [2023-12-20 17:41:11,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:41:11,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528172545] [2023-12-20 17:41:11,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528172545] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:41:11,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:41:11,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:41:11,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191561835] [2023-12-20 17:41:11,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:41:11,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:41:11,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:41:11,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:41:11,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:41:11,796 INFO L87 Difference]: Start difference. First operand 195147 states and 206486 transitions. Second operand has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 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 17:41:14,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:41:14,235 INFO L93 Difference]: Finished difference Result 391997 states and 414713 transitions. [2023-12-20 17:41:14,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:41:14,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 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 977 [2023-12-20 17:41:14,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:41:14,503 INFO L225 Difference]: With dead ends: 391997 [2023-12-20 17:41:14,503 INFO L226 Difference]: Without dead ends: 196849 [2023-12-20 17:41:14,583 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 17:41:14,587 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 102 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:41:14,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 277 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 17:41:14,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196849 states. [2023-12-20 17:41:16,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196849 to 188763. [2023-12-20 17:41:16,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188763 states, 188762 states have (on average 1.0584386687998644) internal successors, (199793), 188762 states have internal predecessors, (199793), 0 states have call successors, (0), 0 states 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 17:41:17,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188763 states to 188763 states and 199793 transitions. [2023-12-20 17:41:17,021 INFO L78 Accepts]: Start accepts. Automaton has 188763 states and 199793 transitions. Word has length 977 [2023-12-20 17:41:17,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:41:17,022 INFO L495 AbstractCegarLoop]: Abstraction has 188763 states and 199793 transitions. [2023-12-20 17:41:17,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 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 17:41:17,022 INFO L276 IsEmpty]: Start isEmpty. Operand 188763 states and 199793 transitions. [2023-12-20 17:41:17,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1011 [2023-12-20 17:41:17,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:41:17,077 INFO L195 NwaCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:41:17,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-20 17:41:17,077 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:41:17,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:41:17,077 INFO L85 PathProgramCache]: Analyzing trace with hash 198011195, now seen corresponding path program 1 times [2023-12-20 17:41:17,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:41:17,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664144181] [2023-12-20 17:41:17,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:41:17,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:41:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:41:17,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1731 backedges. 1051 proven. 0 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2023-12-20 17:41:17,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:41:17,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664144181] [2023-12-20 17:41:17,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664144181] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:41:17,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:41:17,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:41:17,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545277661] [2023-12-20 17:41:17,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:41:17,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:41:17,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:41:17,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:41:17,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:41:17,986 INFO L87 Difference]: Start difference. First operand 188763 states and 199793 transitions. Second operand has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states 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 17:41:19,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:41:19,926 INFO L93 Difference]: Finished difference Result 326360 states and 344615 transitions. [2023-12-20 17:41:19,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:41:19,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 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 1010 [2023-12-20 17:41:19,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:41:20,084 INFO L225 Difference]: With dead ends: 326360 [2023-12-20 17:41:20,085 INFO L226 Difference]: Without dead ends: 138023 [2023-12-20 17:41:20,365 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 17:41:20,365 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 347 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:41:20,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 213 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 17:41:20,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138023 states. [2023-12-20 17:41:21,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138023 to 133314. [2023-12-20 17:41:21,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133314 states, 133313 states have (on average 1.045074373842011) internal successors, (139322), 133313 states have internal predecessors, (139322), 0 states have call successors, (0), 0 states 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 17:41:21,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133314 states to 133314 states and 139322 transitions. [2023-12-20 17:41:21,825 INFO L78 Accepts]: Start accepts. Automaton has 133314 states and 139322 transitions. Word has length 1010 [2023-12-20 17:41:21,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:41:21,825 INFO L495 AbstractCegarLoop]: Abstraction has 133314 states and 139322 transitions. [2023-12-20 17:41:21,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states 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 17:41:21,826 INFO L276 IsEmpty]: Start isEmpty. Operand 133314 states and 139322 transitions. [2023-12-20 17:41:21,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1012 [2023-12-20 17:41:21,860 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:41:21,860 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:41:21,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-20 17:41:21,860 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:41:21,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:41:21,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1640522280, now seen corresponding path program 1 times [2023-12-20 17:41:21,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:41:21,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420744568] [2023-12-20 17:41:21,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:41:21,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:41:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:41:22,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 1094 proven. 105 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-20 17:41:22,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:41:22,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420744568] [2023-12-20 17:41:22,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420744568] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:41:22,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875731874] [2023-12-20 17:41:22,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:41:22,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:41:22,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:41:22,960 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 17:41:22,961 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 17:41:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:41:23,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 1190 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 17:41:23,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:41:23,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 926 proven. 273 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-20 17:41:23,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:41:25,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 949 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2023-12-20 17:41:25,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875731874] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 17:41:25,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-20 17:41:25,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 12 [2023-12-20 17:41:25,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398509167] [2023-12-20 17:41:25,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:41:25,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 17:41:25,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:41:25,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 17:41:25,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-12-20 17:41:25,088 INFO L87 Difference]: Start difference. First operand 133314 states and 139322 transitions. Second operand has 5 states, 5 states have (on average 152.6) internal successors, (763), 5 states have internal predecessors, (763), 0 states have call successors, (0), 0 states 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 17:41:28,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:41:28,121 INFO L93 Difference]: Finished difference Result 280657 states and 293129 transitions. [2023-12-20 17:41:28,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 17:41:28,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 152.6) internal successors, (763), 5 states have internal predecessors, (763), 0 states have call successors, (0), 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 1011 [2023-12-20 17:41:28,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:41:28,284 INFO L225 Difference]: With dead ends: 280657 [2023-12-20 17:41:28,285 INFO L226 Difference]: Without dead ends: 147769 [2023-12-20 17:41:28,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2025 GetRequests, 2015 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-12-20 17:41:28,355 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 1351 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 2086 mSolverCounterSat, 631 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 2717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 631 IncrementalHoareTripleChecker+Valid, 2086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:41:28,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1351 Valid, 88 Invalid, 2717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [631 Valid, 2086 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 17:41:28,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147769 states. [2023-12-20 17:41:30,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147769 to 137564. [2023-12-20 17:41:30,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137564 states, 137563 states have (on average 1.044684980699752) internal successors, (143710), 137563 states have internal predecessors, (143710), 0 states have call successors, (0), 0 states 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 17:41:30,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137564 states to 137564 states and 143710 transitions. [2023-12-20 17:41:30,318 INFO L78 Accepts]: Start accepts. Automaton has 137564 states and 143710 transitions. Word has length 1011 [2023-12-20 17:41:30,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:41:30,318 INFO L495 AbstractCegarLoop]: Abstraction has 137564 states and 143710 transitions. [2023-12-20 17:41:30,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 152.6) internal successors, (763), 5 states have internal predecessors, (763), 0 states have call successors, (0), 0 states 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 17:41:30,319 INFO L276 IsEmpty]: Start isEmpty. Operand 137564 states and 143710 transitions. [2023-12-20 17:41:30,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2023-12-20 17:41:30,360 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:41:30,361 INFO L195 NwaCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:41:30,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-20 17:41:30,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:41:30,567 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:41:30,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:41:30,568 INFO L85 PathProgramCache]: Analyzing trace with hash -433132647, now seen corresponding path program 1 times [2023-12-20 17:41:30,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:41:30,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075425228] [2023-12-20 17:41:30,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:41:30,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:41:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:41:32,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1686 backedges. 709 proven. 0 refuted. 0 times theorem prover too weak. 977 trivial. 0 not checked. [2023-12-20 17:41:32,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:41:32,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075425228] [2023-12-20 17:41:32,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075425228] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:41:32,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:41:32,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:41:32,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151635272] [2023-12-20 17:41:32,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:41:32,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:41:32,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:41:32,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:41:32,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:41:32,047 INFO L87 Difference]: Start difference. First operand 137564 states and 143710 transitions. Second operand has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states 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 17:41:34,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:41:34,678 INFO L93 Difference]: Finished difference Result 285783 states and 298366 transitions. [2023-12-20 17:41:34,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:41:34,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 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 1059 [2023-12-20 17:41:34,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:41:34,833 INFO L225 Difference]: With dead ends: 285783 [2023-12-20 17:41:34,833 INFO L226 Difference]: Without dead ends: 148645 [2023-12-20 17:41:34,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:41:34,908 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 524 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 3026 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 3131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 3026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:41:34,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 693 Invalid, 3131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 3026 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 17:41:35,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148645 states. [2023-12-20 17:41:36,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148645 to 137564. [2023-12-20 17:41:36,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137564 states, 137563 states have (on average 1.0445977479409434) internal successors, (143698), 137563 states have internal predecessors, (143698), 0 states have call successors, (0), 0 states 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 17:41:36,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137564 states to 137564 states and 143698 transitions. [2023-12-20 17:41:36,774 INFO L78 Accepts]: Start accepts. Automaton has 137564 states and 143698 transitions. Word has length 1059 [2023-12-20 17:41:36,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:41:36,775 INFO L495 AbstractCegarLoop]: Abstraction has 137564 states and 143698 transitions. [2023-12-20 17:41:36,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states 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 17:41:36,775 INFO L276 IsEmpty]: Start isEmpty. Operand 137564 states and 143698 transitions. [2023-12-20 17:41:36,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1065 [2023-12-20 17:41:36,816 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:41:36,816 INFO L195 NwaCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:41:36,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-20 17:41:36,817 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:41:36,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:41:36,817 INFO L85 PathProgramCache]: Analyzing trace with hash 768993091, now seen corresponding path program 1 times [2023-12-20 17:41:36,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:41:36,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599625431] [2023-12-20 17:41:36,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:41:36,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:41:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:41:37,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1574 backedges. 1240 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2023-12-20 17:41:37,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:41:37,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599625431] [2023-12-20 17:41:37,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599625431] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:41:37,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:41:37,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:41:37,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685665240] [2023-12-20 17:41:37,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:41:37,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:41:37,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:41:37,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:41:37,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:41:37,840 INFO L87 Difference]: Start difference. First operand 137564 states and 143698 transitions. Second operand has 3 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 0 states have call successors, (0), 0 states 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 17:41:39,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:41:39,483 INFO L93 Difference]: Finished difference Result 275132 states and 287358 transitions. [2023-12-20 17:41:39,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:41:39,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1064 [2023-12-20 17:41:39,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:41:39,624 INFO L225 Difference]: With dead ends: 275132 [2023-12-20 17:41:39,624 INFO L226 Difference]: Without dead ends: 137994 [2023-12-20 17:41:39,680 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 17:41:39,680 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 113 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:41:39,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 692 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 17:41:39,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137994 states.