/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_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 17:35:58,199 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 17:35:58,265 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 17:35:58,269 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 17:35:58,270 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 17:35:58,290 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 17:35:58,291 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 17:35:58,291 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 17:35:58,291 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 17:35:58,294 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 17:35:58,294 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 17:35:58,295 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 17:35:58,295 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 17:35:58,296 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 17:35:58,296 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 17:35:58,296 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 17:35:58,296 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 17:35:58,296 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 17:35:58,296 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 17:35:58,297 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 17:35:58,297 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 17:35:58,298 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 17:35:58,298 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 17:35:58,298 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 17:35:58,298 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 17:35:58,298 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 17:35:58,298 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 17:35:58,299 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 17:35:58,299 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 17:35:58,299 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 17:35:58,300 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 17:35:58,300 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 17:35:58,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:35:58,300 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 17:35:58,300 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 17:35:58,300 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 17:35:58,300 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 17:35:58,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 17:35:58,301 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 17:35:58,301 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 17:35:58,301 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 17:35:58,301 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 17:35:58,301 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 17:35:58,302 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 17:35:58,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 17:35:58,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 17:35:58,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 17:35:58,509 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 17:35:58,509 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 17:35:58,510 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label35.c [2023-12-20 17:35:59,599 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 17:35:59,909 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 17:35:59,910 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label35.c [2023-12-20 17:35:59,933 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a721d37e/d37161e7524d4111b39c60e751452959/FLAGa3ec8414d [2023-12-20 17:35:59,947 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a721d37e/d37161e7524d4111b39c60e751452959 [2023-12-20 17:35:59,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 17:35:59,950 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 17:35:59,952 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 17:35:59,952 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 17:35:59,956 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 17:35:59,956 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:35:59" (1/1) ... [2023-12-20 17:35:59,957 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6af93e51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:35:59, skipping insertion in model container [2023-12-20 17:35:59,957 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:35:59" (1/1) ... [2023-12-20 17:36:00,052 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 17:36:00,235 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_label35.c[1267,1280] [2023-12-20 17:36:00,723 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:36:00,737 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 17:36:00,748 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_label35.c[1267,1280] [2023-12-20 17:36:00,976 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:36:00,991 INFO L206 MainTranslator]: Completed translation [2023-12-20 17:36:00,991 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:36:00 WrapperNode [2023-12-20 17:36:00,991 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 17:36:00,993 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 17:36:00,993 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 17:36:00,993 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 17:36:00,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:36:00" (1/1) ... [2023-12-20 17:36:01,032 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:36:00" (1/1) ... [2023-12-20 17:36:01,269 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2023-12-20 17:36:01,269 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 17:36:01,270 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 17:36:01,270 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 17:36:01,270 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 17:36:01,278 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:36:00" (1/1) ... [2023-12-20 17:36:01,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:36:00" (1/1) ... [2023-12-20 17:36:01,323 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:36:00" (1/1) ... [2023-12-20 17:36:01,397 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 17:36:01,397 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:36:00" (1/1) ... [2023-12-20 17:36:01,397 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:36:00" (1/1) ... [2023-12-20 17:36:01,573 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:36:00" (1/1) ... [2023-12-20 17:36:01,628 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:36:00" (1/1) ... [2023-12-20 17:36:01,647 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:36:00" (1/1) ... [2023-12-20 17:36:01,657 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:36:00" (1/1) ... [2023-12-20 17:36:01,684 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 17:36:01,686 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 17:36:01,686 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 17:36:01,686 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 17:36:01,687 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:36:00" (1/1) ... [2023-12-20 17:36:01,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:36:01,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:36:01,708 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 17:36:01,726 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 17:36:01,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 17:36:01,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 17:36:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 17:36:01,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 17:36:01,795 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 17:36:01,797 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 17:36:04,089 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 17:36:04,123 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 17:36:04,124 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 17:36:04,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:36:04 BoogieIcfgContainer [2023-12-20 17:36:04,124 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 17:36:04,126 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 17:36:04,126 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 17:36:04,128 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 17:36:04,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 05:35:59" (1/3) ... [2023-12-20 17:36:04,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693916dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:36:04, skipping insertion in model container [2023-12-20 17:36:04,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:36:00" (2/3) ... [2023-12-20 17:36:04,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693916dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:36:04, skipping insertion in model container [2023-12-20 17:36:04,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:36:04" (3/3) ... [2023-12-20 17:36:04,130 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label35.c [2023-12-20 17:36:04,141 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 17:36:04,141 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 17:36:04,177 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 17:36:04,181 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;@3001926f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 17:36:04,181 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 17:36:04,196 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 17:36:04,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-20 17:36:04,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:36:04,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-20 17:36:04,201 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:36:04,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:36:04,207 INFO L85 PathProgramCache]: Analyzing trace with hash -28674423, now seen corresponding path program 1 times [2023-12-20 17:36:04,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:36:04,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141047911] [2023-12-20 17:36:04,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:36:04,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:36:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:36:04,356 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 17:36:04,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:36:04,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141047911] [2023-12-20 17:36:04,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141047911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:36:04,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:36:04,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:36:04,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798642353] [2023-12-20 17:36:04,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:36:04,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:36:04,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:36:04,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:36:04,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:36:04,381 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 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states 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 17:36:06,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:36:06,847 INFO L93 Difference]: Finished difference Result 1507 states and 2892 transitions. [2023-12-20 17:36:06,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:36:06,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2023-12-20 17:36:06,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:36:06,866 INFO L225 Difference]: With dead ends: 1507 [2023-12-20 17:36:06,866 INFO L226 Difference]: Without dead ends: 976 [2023-12-20 17:36:06,870 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 17:36:06,873 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 467 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 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, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:36:06,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 450 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1400 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 17:36:06,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2023-12-20 17:36:06,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 970. [2023-12-20 17:36:06,952 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 17:36:06,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1506 transitions. [2023-12-20 17:36:06,956 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1506 transitions. Word has length 6 [2023-12-20 17:36:06,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:36:06,957 INFO L495 AbstractCegarLoop]: Abstraction has 970 states and 1506 transitions. [2023-12-20 17:36:06,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states 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 17:36:06,957 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1506 transitions. [2023-12-20 17:36:06,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 17:36:06,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:36:06,959 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:36:06,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 17:36:06,959 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:36:06,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:36:06,960 INFO L85 PathProgramCache]: Analyzing trace with hash 884233218, now seen corresponding path program 1 times [2023-12-20 17:36:06,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:36:06,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011633796] [2023-12-20 17:36:06,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:36:06,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:36:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:36:07,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:36:07,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:36:07,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011633796] [2023-12-20 17:36:07,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011633796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:36:07,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:36:07,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:36:07,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730948423] [2023-12-20 17:36:07,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:36:07,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:36:07,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:36:07,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:36:07,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:36:07,205 INFO L87 Difference]: Start difference. First operand 970 states and 1506 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 17:36:09,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:36:09,213 INFO L93 Difference]: Finished difference Result 2812 states and 4380 transitions. [2023-12-20 17:36:09,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:36:09,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2023-12-20 17:36:09,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:36:09,219 INFO L225 Difference]: With dead ends: 2812 [2023-12-20 17:36:09,219 INFO L226 Difference]: Without dead ends: 1843 [2023-12-20 17:36:09,221 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 17:36:09,221 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 405 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:36:09,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 577 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 17:36:09,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2023-12-20 17:36:09,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1840. [2023-12-20 17:36:09,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 1.3501903208265362) internal successors, (2483), 1839 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states 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 17:36:09,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 2483 transitions. [2023-12-20 17:36:09,303 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 2483 transitions. Word has length 73 [2023-12-20 17:36:09,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:36:09,304 INFO L495 AbstractCegarLoop]: Abstraction has 1840 states and 2483 transitions. [2023-12-20 17:36:09,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 17:36:09,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 2483 transitions. [2023-12-20 17:36:09,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 17:36:09,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:36:09,307 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 17:36:09,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 17:36:09,307 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:36:09,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:36:09,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1019077052, now seen corresponding path program 1 times [2023-12-20 17:36:09,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:36:09,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448469070] [2023-12-20 17:36:09,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:36:09,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:36:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:36:09,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:36:09,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:36:09,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448469070] [2023-12-20 17:36:09,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448469070] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:36:09,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:36:09,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:36:09,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796600951] [2023-12-20 17:36:09,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:36:09,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:36:09,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:36:09,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:36:09,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:36:09,445 INFO L87 Difference]: Start difference. First operand 1840 states and 2483 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:36:11,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:36:11,221 INFO L93 Difference]: Finished difference Result 4551 states and 6281 transitions. [2023-12-20 17:36:11,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:36:11,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-20 17:36:11,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:36:11,228 INFO L225 Difference]: With dead ends: 4551 [2023-12-20 17:36:11,228 INFO L226 Difference]: Without dead ends: 2712 [2023-12-20 17:36:11,232 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 17:36:11,234 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 500 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 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 17:36:11,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 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 17:36:11,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2712 states. [2023-12-20 17:36:11,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2712 to 2710. [2023-12-20 17:36:11,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2710 states, 2709 states have (on average 1.3004798818752308) internal successors, (3523), 2709 states have internal predecessors, (3523), 0 states have call successors, (0), 0 states 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 17:36:11,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2710 states to 2710 states and 3523 transitions. [2023-12-20 17:36:11,269 INFO L78 Accepts]: Start accepts. Automaton has 2710 states and 3523 transitions. Word has length 76 [2023-12-20 17:36:11,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:36:11,273 INFO L495 AbstractCegarLoop]: Abstraction has 2710 states and 3523 transitions. [2023-12-20 17:36:11,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:36:11,278 INFO L276 IsEmpty]: Start isEmpty. Operand 2710 states and 3523 transitions. [2023-12-20 17:36:11,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-20 17:36:11,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:36:11,282 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 17:36:11,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 17:36:11,282 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:36:11,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:36:11,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1451564948, now seen corresponding path program 1 times [2023-12-20 17:36:11,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:36:11,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439051280] [2023-12-20 17:36:11,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:36:11,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:36:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:36:11,485 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-20 17:36:11,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:36:11,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439051280] [2023-12-20 17:36:11,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439051280] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:36:11,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:36:11,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:36:11,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097920324] [2023-12-20 17:36:11,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:36:11,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:36:11,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:36:11,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:36:11,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:36:11,488 INFO L87 Difference]: Start difference. First operand 2710 states and 3523 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:36:13,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:36:13,178 INFO L93 Difference]: Finished difference Result 7983 states and 10360 transitions. [2023-12-20 17:36:13,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:36:13,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2023-12-20 17:36:13,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:36:13,189 INFO L225 Difference]: With dead ends: 7983 [2023-12-20 17:36:13,189 INFO L226 Difference]: Without dead ends: 4420 [2023-12-20 17:36:13,192 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 17:36:13,193 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:36:13,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 17:36:13,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4420 states. [2023-12-20 17:36:13,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4420 to 3570. [2023-12-20 17:36:13,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3570 states, 3569 states have (on average 1.177640795741104) internal successors, (4203), 3569 states have internal predecessors, (4203), 0 states have call successors, (0), 0 states 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 17:36:13,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3570 states to 3570 states and 4203 transitions. [2023-12-20 17:36:13,231 INFO L78 Accepts]: Start accepts. Automaton has 3570 states and 4203 transitions. Word has length 145 [2023-12-20 17:36:13,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:36:13,231 INFO L495 AbstractCegarLoop]: Abstraction has 3570 states and 4203 transitions. [2023-12-20 17:36:13,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:36:13,232 INFO L276 IsEmpty]: Start isEmpty. Operand 3570 states and 4203 transitions. [2023-12-20 17:36:13,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-20 17:36:13,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:36:13,233 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 17:36:13,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 17:36:13,233 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:36:13,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:36:13,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1408080026, now seen corresponding path program 1 times [2023-12-20 17:36:13,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:36:13,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453241676] [2023-12-20 17:36:13,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:36:13,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:36:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:36:13,361 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 17:36:13,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:36:13,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453241676] [2023-12-20 17:36:13,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453241676] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:36:13,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:36:13,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:36:13,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221387656] [2023-12-20 17:36:13,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:36:13,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:36:13,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:36:13,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:36:13,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:36:13,365 INFO L87 Difference]: Start difference. First operand 3570 states and 4203 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 17:36:14,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:36:14,792 INFO L93 Difference]: Finished difference Result 9272 states and 11086 transitions. [2023-12-20 17:36:14,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:36:14,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2023-12-20 17:36:14,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:36:14,806 INFO L225 Difference]: With dead ends: 9272 [2023-12-20 17:36:14,806 INFO L226 Difference]: Without dead ends: 5703 [2023-12-20 17:36:14,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:36:14,810 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 17:36:14,811 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 17:36:14,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5703 states. [2023-12-20 17:36:14,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5703 to 5703. [2023-12-20 17:36:14,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5703 states, 5702 states have (on average 1.1595931252192213) internal successors, (6612), 5702 states have internal predecessors, (6612), 0 states have call successors, (0), 0 states 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 17:36:14,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5703 states to 5703 states and 6612 transitions. [2023-12-20 17:36:14,875 INFO L78 Accepts]: Start accepts. Automaton has 5703 states and 6612 transitions. Word has length 158 [2023-12-20 17:36:14,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:36:14,876 INFO L495 AbstractCegarLoop]: Abstraction has 5703 states and 6612 transitions. [2023-12-20 17:36:14,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 17:36:14,876 INFO L276 IsEmpty]: Start isEmpty. Operand 5703 states and 6612 transitions. [2023-12-20 17:36:14,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-20 17:36:14,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:36:14,879 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:36:14,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 17:36:14,879 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:36:14,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:36:14,880 INFO L85 PathProgramCache]: Analyzing trace with hash -2014099829, now seen corresponding path program 1 times [2023-12-20 17:36:14,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:36:14,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924666770] [2023-12-20 17:36:14,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:36:14,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:36:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:36:14,964 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-20 17:36:14,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:36:14,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924666770] [2023-12-20 17:36:14,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924666770] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:36:14,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:36:14,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:36:14,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908110983] [2023-12-20 17:36:14,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:36:14,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:36:14,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:36:14,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:36:14,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:36:14,967 INFO L87 Difference]: Start difference. First operand 5703 states and 6612 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 17:36:16,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:36:16,583 INFO L93 Difference]: Finished difference Result 14375 states and 16775 transitions. [2023-12-20 17:36:16,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:36:16,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 160 [2023-12-20 17:36:16,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:36:16,604 INFO L225 Difference]: With dead ends: 14375 [2023-12-20 17:36:16,604 INFO L226 Difference]: Without dead ends: 8672 [2023-12-20 17:36:16,611 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 17:36:16,612 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 443 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:36:16,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 442 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 17:36:16,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8672 states. [2023-12-20 17:36:16,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8672 to 5676. [2023-12-20 17:36:16,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5676 states, 5675 states have (on average 1.157885462555066) internal successors, (6571), 5675 states have internal predecessors, (6571), 0 states have call successors, (0), 0 states 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 17:36:16,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5676 states to 5676 states and 6571 transitions. [2023-12-20 17:36:16,699 INFO L78 Accepts]: Start accepts. Automaton has 5676 states and 6571 transitions. Word has length 160 [2023-12-20 17:36:16,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:36:16,699 INFO L495 AbstractCegarLoop]: Abstraction has 5676 states and 6571 transitions. [2023-12-20 17:36:16,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 17:36:16,699 INFO L276 IsEmpty]: Start isEmpty. Operand 5676 states and 6571 transitions. [2023-12-20 17:36:16,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-12-20 17:36:16,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:36:16,701 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:36:16,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 17:36:16,701 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:36:16,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:36:16,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1323127433, now seen corresponding path program 1 times [2023-12-20 17:36:16,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:36:16,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862155345] [2023-12-20 17:36:16,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:36:16,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:36:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:36:16,847 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-12-20 17:36:16,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:36:16,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862155345] [2023-12-20 17:36:16,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862155345] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:36:16,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:36:16,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:36:16,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988170676] [2023-12-20 17:36:16,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:36:16,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:36:16,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:36:16,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:36:16,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:36:16,848 INFO L87 Difference]: Start difference. First operand 5676 states and 6571 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 17:36:18,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:36:18,446 INFO L93 Difference]: Finished difference Result 14314 states and 16679 transitions. [2023-12-20 17:36:18,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:36:18,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 238 [2023-12-20 17:36:18,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:36:18,464 INFO L225 Difference]: With dead ends: 14314 [2023-12-20 17:36:18,464 INFO L226 Difference]: Without dead ends: 7789 [2023-12-20 17:36:18,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:36:18,471 INFO L413 NwaCegarLoop]: 776 mSDtfsCounter, 383 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:36:18,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 844 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 17:36:18,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7789 states. [2023-12-20 17:36:18,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7789 to 7789. [2023-12-20 17:36:18,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7789 states, 7788 states have (on average 1.11864406779661) internal successors, (8712), 7788 states have internal predecessors, (8712), 0 states have call successors, (0), 0 states 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 17:36:18,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7789 states to 7789 states and 8712 transitions. [2023-12-20 17:36:18,628 INFO L78 Accepts]: Start accepts. Automaton has 7789 states and 8712 transitions. Word has length 238 [2023-12-20 17:36:18,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:36:18,628 INFO L495 AbstractCegarLoop]: Abstraction has 7789 states and 8712 transitions. [2023-12-20 17:36:18,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 17:36:18,629 INFO L276 IsEmpty]: Start isEmpty. Operand 7789 states and 8712 transitions. [2023-12-20 17:36:18,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2023-12-20 17:36:18,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:36:18,632 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 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 17:36:18,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 17:36:18,632 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:36:18,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:36:18,633 INFO L85 PathProgramCache]: Analyzing trace with hash 842591716, now seen corresponding path program 1 times [2023-12-20 17:36:18,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:36:18,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171877788] [2023-12-20 17:36:18,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:36:18,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:36:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:36:18,804 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-12-20 17:36:18,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:36:18,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171877788] [2023-12-20 17:36:18,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171877788] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:36:18,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:36:18,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:36:18,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878543343] [2023-12-20 17:36:18,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:36:18,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:36:18,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:36:18,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:36:18,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:36:18,806 INFO L87 Difference]: Start difference. First operand 7789 states and 8712 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 17:36:20,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:36:20,389 INFO L93 Difference]: Finished difference Result 18558 states and 20912 transitions. [2023-12-20 17:36:20,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:36:20,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 278 [2023-12-20 17:36:20,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:36:20,406 INFO L225 Difference]: With dead ends: 18558 [2023-12-20 17:36:20,406 INFO L226 Difference]: Without dead ends: 10770 [2023-12-20 17:36:20,414 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 17:36:20,414 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 464 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:36:20,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 400 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1218 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 17:36:20,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10770 states. [2023-12-20 17:36:20,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10770 to 9915. [2023-12-20 17:36:20,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9915 states, 9914 states have (on average 1.1194270728263063) internal successors, (11098), 9914 states have internal predecessors, (11098), 0 states have call successors, (0), 0 states 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 17:36:20,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9915 states to 9915 states and 11098 transitions. [2023-12-20 17:36:20,525 INFO L78 Accepts]: Start accepts. Automaton has 9915 states and 11098 transitions. Word has length 278 [2023-12-20 17:36:20,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:36:20,525 INFO L495 AbstractCegarLoop]: Abstraction has 9915 states and 11098 transitions. [2023-12-20 17:36:20,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 17:36:20,526 INFO L276 IsEmpty]: Start isEmpty. Operand 9915 states and 11098 transitions. [2023-12-20 17:36:20,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2023-12-20 17:36:20,537 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:36:20,537 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:36:20,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 17:36:20,538 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:36:20,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:36:20,538 INFO L85 PathProgramCache]: Analyzing trace with hash 140259748, now seen corresponding path program 1 times [2023-12-20 17:36:20,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:36:20,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429444819] [2023-12-20 17:36:20,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:36:20,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:36:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:36:20,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:36:20,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:36:20,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429444819] [2023-12-20 17:36:20,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429444819] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:36:20,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:36:20,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:36:20,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188178083] [2023-12-20 17:36:20,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:36:20,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:36:20,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:36:20,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:36:20,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:36:20,878 INFO L87 Difference]: Start difference. First operand 9915 states and 11098 transitions. Second operand has 4 states, 4 states have (on average 86.25) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states 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 17:36:23,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:36:23,170 INFO L93 Difference]: Finished difference Result 26238 states and 29413 transitions. [2023-12-20 17:36:23,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:36:23,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 86.25) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 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 345 [2023-12-20 17:36:23,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:36:23,198 INFO L225 Difference]: With dead ends: 26238 [2023-12-20 17:36:23,198 INFO L226 Difference]: Without dead ends: 15899 [2023-12-20 17:36:23,208 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 17:36:23,209 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 668 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 2368 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 2698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 2368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:36:23,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [668 Valid, 194 Invalid, 2698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 2368 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 17:36:23,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15899 states. [2023-12-20 17:36:23,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15899 to 15897. [2023-12-20 17:36:23,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15897 states, 15896 states have (on average 1.1247483643683946) internal successors, (17879), 15896 states have internal predecessors, (17879), 0 states have call successors, (0), 0 states 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 17:36:23,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15897 states to 15897 states and 17879 transitions. [2023-12-20 17:36:23,359 INFO L78 Accepts]: Start accepts. Automaton has 15897 states and 17879 transitions. Word has length 345 [2023-12-20 17:36:23,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:36:23,359 INFO L495 AbstractCegarLoop]: Abstraction has 15897 states and 17879 transitions. [2023-12-20 17:36:23,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.25) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states 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 17:36:23,359 INFO L276 IsEmpty]: Start isEmpty. Operand 15897 states and 17879 transitions. [2023-12-20 17:36:23,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2023-12-20 17:36:23,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:36:23,366 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:36:23,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 17:36:23,366 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:36:23,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:36:23,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1381349451, now seen corresponding path program 1 times [2023-12-20 17:36:23,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:36:23,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913238385] [2023-12-20 17:36:23,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:36:23,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:36:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:36:23,562 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-12-20 17:36:23,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:36:23,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913238385] [2023-12-20 17:36:23,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913238385] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:36:23,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:36:23,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:36:23,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668836390] [2023-12-20 17:36:23,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:36:23,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:36:23,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:36:23,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:36:23,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:36:23,568 INFO L87 Difference]: Start difference. First operand 15897 states and 17879 transitions. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states 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 17:36:25,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:36:25,439 INFO L93 Difference]: Finished difference Result 44147 states and 49783 transitions. [2023-12-20 17:36:25,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:36:25,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 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 379 [2023-12-20 17:36:25,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:36:25,478 INFO L225 Difference]: With dead ends: 44147 [2023-12-20 17:36:25,478 INFO L226 Difference]: Without dead ends: 28251 [2023-12-20 17:36:25,493 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 17:36:25,494 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 496 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1318 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 1318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:36:25,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 285 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 1318 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 17:36:25,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28251 states. [2023-12-20 17:36:25,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28251 to 27808. [2023-12-20 17:36:25,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27808 states, 27807 states have (on average 1.1171647426906894) internal successors, (31065), 27807 states have internal predecessors, (31065), 0 states have call successors, (0), 0 states 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 17:36:25,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27808 states to 27808 states and 31065 transitions. [2023-12-20 17:36:25,835 INFO L78 Accepts]: Start accepts. Automaton has 27808 states and 31065 transitions. Word has length 379 [2023-12-20 17:36:25,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:36:25,836 INFO L495 AbstractCegarLoop]: Abstraction has 27808 states and 31065 transitions. [2023-12-20 17:36:25,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states 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 17:36:25,836 INFO L276 IsEmpty]: Start isEmpty. Operand 27808 states and 31065 transitions. [2023-12-20 17:36:25,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2023-12-20 17:36:25,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:36:25,848 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:36:25,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 17:36:25,848 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:36:25,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:36:25,849 INFO L85 PathProgramCache]: Analyzing trace with hash -293304718, now seen corresponding path program 1 times [2023-12-20 17:36:25,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:36:25,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333028658] [2023-12-20 17:36:25,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:36:25,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:36:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:36:26,124 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-20 17:36:26,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:36:26,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333028658] [2023-12-20 17:36:26,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333028658] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:36:26,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:36:26,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:36:26,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119047055] [2023-12-20 17:36:26,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:36:26,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:36:26,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:36:26,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:36:26,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:36:26,126 INFO L87 Difference]: Start difference. First operand 27808 states and 31065 transitions. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:36:27,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:36:27,837 INFO L93 Difference]: Finished difference Result 62013 states and 69500 transitions. [2023-12-20 17:36:27,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:36:27,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 392 [2023-12-20 17:36:27,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:36:27,875 INFO L225 Difference]: With dead ends: 62013 [2023-12-20 17:36:27,875 INFO L226 Difference]: Without dead ends: 32501 [2023-12-20 17:36:27,895 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 17:36:27,896 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 465 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 1488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:36:27,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 839 Invalid, 1488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 17:36:27,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32501 states. [2023-12-20 17:36:28,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32501 to 32495. [2023-12-20 17:36:28,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32495 states, 32494 states have (on average 1.1129439281098048) internal successors, (36164), 32494 states have internal predecessors, (36164), 0 states have call successors, (0), 0 states 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 17:36:28,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32495 states to 32495 states and 36164 transitions. [2023-12-20 17:36:28,226 INFO L78 Accepts]: Start accepts. Automaton has 32495 states and 36164 transitions. Word has length 392 [2023-12-20 17:36:28,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:36:28,227 INFO L495 AbstractCegarLoop]: Abstraction has 32495 states and 36164 transitions. [2023-12-20 17:36:28,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:36:28,227 INFO L276 IsEmpty]: Start isEmpty. Operand 32495 states and 36164 transitions. [2023-12-20 17:36:28,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-12-20 17:36:28,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:36:28,238 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:36:28,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 17:36:28,238 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:36:28,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:36:28,238 INFO L85 PathProgramCache]: Analyzing trace with hash 471280211, now seen corresponding path program 1 times [2023-12-20 17:36:28,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:36:28,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211763937] [2023-12-20 17:36:28,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:36:28,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:36:28,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:36:28,668 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-12-20 17:36:28,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:36:28,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211763937] [2023-12-20 17:36:28,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211763937] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:36:28,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:36:28,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:36:28,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824847316] [2023-12-20 17:36:28,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:36:28,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:36:28,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:36:28,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:36:28,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:36:28,670 INFO L87 Difference]: Start difference. First operand 32495 states and 36164 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 17:36:30,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:36:30,644 INFO L93 Difference]: Finished difference Result 77800 states and 86692 transitions. [2023-12-20 17:36:30,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:36:30,644 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 441 [2023-12-20 17:36:30,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:36:30,694 INFO L225 Difference]: With dead ends: 77800 [2023-12-20 17:36:30,694 INFO L226 Difference]: Without dead ends: 45306 [2023-12-20 17:36:30,720 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 17:36:30,721 INFO L413 NwaCegarLoop]: 697 mSDtfsCounter, 497 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 1545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:36:30,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 751 Invalid, 1545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1337 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 17:36:30,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45306 states. [2023-12-20 17:36:31,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45306 to 43579. [2023-12-20 17:36:31,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43579 states, 43578 states have (on average 1.1083344807012714) internal successors, (48299), 43578 states have internal predecessors, (48299), 0 states have call successors, (0), 0 states 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 17:36:31,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43579 states to 43579 states and 48299 transitions. [2023-12-20 17:36:31,240 INFO L78 Accepts]: Start accepts. Automaton has 43579 states and 48299 transitions. Word has length 441 [2023-12-20 17:36:31,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:36:31,240 INFO L495 AbstractCegarLoop]: Abstraction has 43579 states and 48299 transitions. [2023-12-20 17:36:31,240 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 17:36:31,241 INFO L276 IsEmpty]: Start isEmpty. Operand 43579 states and 48299 transitions. [2023-12-20 17:36:31,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2023-12-20 17:36:31,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:36:31,250 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:36:31,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 17:36:31,251 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:36:31,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:36:31,251 INFO L85 PathProgramCache]: Analyzing trace with hash 728425863, now seen corresponding path program 1 times [2023-12-20 17:36:31,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:36:31,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836483171] [2023-12-20 17:36:31,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:36:31,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:36:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:36:31,640 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 283 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:36:31,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:36:31,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836483171] [2023-12-20 17:36:31,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836483171] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:36:31,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:36:31,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:36:31,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710984434] [2023-12-20 17:36:31,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:36:31,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:36:31,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:36:31,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:36:31,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:36:31,642 INFO L87 Difference]: Start difference. First operand 43579 states and 48299 transitions. Second operand has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states 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 17:36:34,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:36:34,533 INFO L93 Difference]: Finished difference Result 107191 states and 118515 transitions. [2023-12-20 17:36:34,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:36:34,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 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 449 [2023-12-20 17:36:34,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:36:34,620 INFO L225 Difference]: With dead ends: 107191 [2023-12-20 17:36:34,620 INFO L226 Difference]: Without dead ends: 63613 [2023-12-20 17:36:34,650 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 17:36:34,651 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 666 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 2389 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 2844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 2389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:36:34,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 187 Invalid, 2844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 2389 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 17:36:34,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63613 states. [2023-12-20 17:36:35,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63613 to 58070. [2023-12-20 17:36:35,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58070 states, 58069 states have (on average 1.106890079043896) internal successors, (64276), 58069 states have internal predecessors, (64276), 0 states have call successors, (0), 0 states 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 17:36:35,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58070 states to 58070 states and 64276 transitions. [2023-12-20 17:36:35,348 INFO L78 Accepts]: Start accepts. Automaton has 58070 states and 64276 transitions. Word has length 449 [2023-12-20 17:36:35,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:36:35,349 INFO L495 AbstractCegarLoop]: Abstraction has 58070 states and 64276 transitions. [2023-12-20 17:36:35,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states 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 17:36:35,349 INFO L276 IsEmpty]: Start isEmpty. Operand 58070 states and 64276 transitions. [2023-12-20 17:36:35,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2023-12-20 17:36:35,360 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:36:35,361 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:36:35,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 17:36:35,361 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:36:35,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:36:35,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1941157624, now seen corresponding path program 1 times [2023-12-20 17:36:35,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:36:35,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367739536] [2023-12-20 17:36:35,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:36:35,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:36:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:36:35,852 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-12-20 17:36:35,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:36:35,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367739536] [2023-12-20 17:36:35,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367739536] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:36:35,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:36:35,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:36:35,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945209741] [2023-12-20 17:36:35,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:36:35,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:36:35,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:36:35,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:36:35,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:36:35,854 INFO L87 Difference]: Start difference. First operand 58070 states and 64276 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 17:36:37,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:36:37,632 INFO L93 Difference]: Finished difference Result 116128 states and 128540 transitions. [2023-12-20 17:36:37,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:36:37,633 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 473 [2023-12-20 17:36:37,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:36:37,694 INFO L225 Difference]: With dead ends: 116128 [2023-12-20 17:36:37,694 INFO L226 Difference]: Without dead ends: 58059 [2023-12-20 17:36:37,731 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 17:36:37,731 INFO L413 NwaCegarLoop]: 672 mSDtfsCounter, 495 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:36:37,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 740 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 17:36:37,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58059 states. [2023-12-20 17:36:38,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58059 to 57207. [2023-12-20 17:36:38,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57207 states, 57206 states have (on average 1.084868720064329) internal successors, (62061), 57206 states have internal predecessors, (62061), 0 states have call successors, (0), 0 states 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 17:36:38,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57207 states to 57207 states and 62061 transitions. [2023-12-20 17:36:38,363 INFO L78 Accepts]: Start accepts. Automaton has 57207 states and 62061 transitions. Word has length 473 [2023-12-20 17:36:38,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:36:38,363 INFO L495 AbstractCegarLoop]: Abstraction has 57207 states and 62061 transitions. [2023-12-20 17:36:38,363 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 17:36:38,363 INFO L276 IsEmpty]: Start isEmpty. Operand 57207 states and 62061 transitions. [2023-12-20 17:36:38,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2023-12-20 17:36:38,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:36:38,375 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:36:38,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 17:36:38,375 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:36:38,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:36:38,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1759022531, now seen corresponding path program 1 times [2023-12-20 17:36:38,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:36:38,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301152924] [2023-12-20 17:36:38,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:36:38,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:36:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:36:39,191 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-20 17:36:39,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:36:39,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301152924] [2023-12-20 17:36:39,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301152924] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:36:39,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:36:39,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:36:39,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328343643] [2023-12-20 17:36:39,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:36:39,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:36:39,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:36:39,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:36:39,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:36:39,193 INFO L87 Difference]: Start difference. First operand 57207 states and 62061 transitions. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states 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 17:36:41,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:36:41,018 INFO L93 Difference]: Finished difference Result 118262 states and 128436 transitions. [2023-12-20 17:36:41,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:36:41,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 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 492 [2023-12-20 17:36:41,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:36:41,094 INFO L225 Difference]: With dead ends: 118262 [2023-12-20 17:36:41,094 INFO L226 Difference]: Without dead ends: 60201 [2023-12-20 17:36:41,132 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 17:36:41,132 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 216 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:36:41,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 792 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 17:36:41,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60201 states. [2023-12-20 17:36:41,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60201 to 57208. [2023-12-20 17:36:41,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57208 states, 57207 states have (on average 1.0847273935007953) internal successors, (62054), 57207 states have internal predecessors, (62054), 0 states have call successors, (0), 0 states 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 17:36:41,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57208 states to 57208 states and 62054 transitions. [2023-12-20 17:36:41,900 INFO L78 Accepts]: Start accepts. Automaton has 57208 states and 62054 transitions. Word has length 492 [2023-12-20 17:36:41,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:36:41,900 INFO L495 AbstractCegarLoop]: Abstraction has 57208 states and 62054 transitions. [2023-12-20 17:36:41,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states 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 17:36:41,901 INFO L276 IsEmpty]: Start isEmpty. Operand 57208 states and 62054 transitions. [2023-12-20 17:36:41,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2023-12-20 17:36:41,914 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:36:41,914 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:36:41,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 17:36:41,914 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:36:41,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:36:41,915 INFO L85 PathProgramCache]: Analyzing trace with hash 527003963, now seen corresponding path program 1 times [2023-12-20 17:36:41,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:36:41,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900216723] [2023-12-20 17:36:41,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:36:41,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:36:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:36:42,443 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 250 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-20 17:36:42,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:36:42,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900216723] [2023-12-20 17:36:42,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900216723] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:36:42,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647495172] [2023-12-20 17:36:42,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:36:42,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:36:42,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:36:42,450 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 17:36:42,455 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 17:36:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:36:42,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:36:42,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:36:42,937 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 250 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-20 17:36:42,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:36:43,234 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 332 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-20 17:36:43,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647495172] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 17:36:43,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-20 17:36:43,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-12-20 17:36:43,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351195489] [2023-12-20 17:36:43,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:36:43,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:36:43,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:36:43,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:36:43,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:36:43,236 INFO L87 Difference]: Start difference. First operand 57208 states and 62054 transitions. Second operand has 4 states, 4 states have (on average 125.25) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states 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 17:36:46,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:36:46,707 INFO L93 Difference]: Finished difference Result 138297 states and 150078 transitions. [2023-12-20 17:36:46,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:36:46,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 125.25) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 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 505 [2023-12-20 17:36:46,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:36:46,799 INFO L225 Difference]: With dead ends: 138297 [2023-12-20 17:36:46,799 INFO L226 Difference]: Without dead ends: 79381 [2023-12-20 17:36:46,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1011 GetRequests, 1007 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 17:36:46,831 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 768 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 691 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 3153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 691 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:36:46,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 137 Invalid, 3153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [691 Valid, 2462 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 17:36:46,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79381 states. [2023-12-20 17:36:47,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79381 to 71667. [2023-12-20 17:36:47,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71667 states, 71666 states have (on average 1.0851728853291658) internal successors, (77770), 71666 states have internal predecessors, (77770), 0 states have call successors, (0), 0 states 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 17:36:47,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71667 states to 71667 states and 77770 transitions. [2023-12-20 17:36:47,787 INFO L78 Accepts]: Start accepts. Automaton has 71667 states and 77770 transitions. Word has length 505 [2023-12-20 17:36:47,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:36:47,788 INFO L495 AbstractCegarLoop]: Abstraction has 71667 states and 77770 transitions. [2023-12-20 17:36:47,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.25) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states 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 17:36:47,788 INFO L276 IsEmpty]: Start isEmpty. Operand 71667 states and 77770 transitions. [2023-12-20 17:36:47,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-12-20 17:36:47,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:36:47,800 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:36:47,805 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 17:36:48,005 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,SelfDestructingSolverStorable15 [2023-12-20 17:36:48,005 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:36:48,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:36:48,006 INFO L85 PathProgramCache]: Analyzing trace with hash -543631024, now seen corresponding path program 1 times [2023-12-20 17:36:48,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:36:48,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008949102] [2023-12-20 17:36:48,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:36:48,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:36:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:36:48,675 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 277 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-20 17:36:48,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:36:48,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008949102] [2023-12-20 17:36:48,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008949102] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:36:48,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620247445] [2023-12-20 17:36:48,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:36:48,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:36:48,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:36:48,687 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 17:36:48,688 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 17:36:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:36:48,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-20 17:36:48,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:36:49,420 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 200 proven. 164 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:36:49,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:36:49,936 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 364 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:36:49,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620247445] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 17:36:49,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-20 17:36:49,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 4] total 7 [2023-12-20 17:36:49,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287122238] [2023-12-20 17:36:49,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:36:49,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 17:36:49,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:36:49,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 17:36:49,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:36:49,939 INFO L87 Difference]: Start difference. First operand 71667 states and 77770 transitions. Second operand has 5 states, 5 states have (on average 106.0) internal successors, (530), 4 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 17:36:53,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:36:53,567 INFO L93 Difference]: Finished difference Result 184222 states and 200278 transitions. [2023-12-20 17:36:53,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 17:36:53,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 106.0) internal successors, (530), 4 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 530 [2023-12-20 17:36:53,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:36:53,691 INFO L225 Difference]: With dead ends: 184222 [2023-12-20 17:36:53,691 INFO L226 Difference]: Without dead ends: 109999 [2023-12-20 17:36:53,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1061 GetRequests, 1055 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:36:53,735 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 981 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 3157 mSolverCounterSat, 750 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 3907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 750 IncrementalHoareTripleChecker+Valid, 3157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:36:53,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 199 Invalid, 3907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [750 Valid, 3157 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 17:36:53,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109999 states. [2023-12-20 17:36:54,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109999 to 85280. [2023-12-20 17:36:54,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85280 states, 85279 states have (on average 1.077768266513444) internal successors, (91911), 85279 states have internal predecessors, (91911), 0 states have call successors, (0), 0 states 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 17:36:55,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85280 states to 85280 states and 91911 transitions. [2023-12-20 17:36:55,035 INFO L78 Accepts]: Start accepts. Automaton has 85280 states and 91911 transitions. Word has length 530 [2023-12-20 17:36:55,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:36:55,036 INFO L495 AbstractCegarLoop]: Abstraction has 85280 states and 91911 transitions. [2023-12-20 17:36:55,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.0) internal successors, (530), 4 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 17:36:55,036 INFO L276 IsEmpty]: Start isEmpty. Operand 85280 states and 91911 transitions. [2023-12-20 17:36:55,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2023-12-20 17:36:55,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:36:55,049 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:36:55,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-20 17:36:55,249 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,SelfDestructingSolverStorable16 [2023-12-20 17:36:55,250 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:36:55,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:36:55,250 INFO L85 PathProgramCache]: Analyzing trace with hash -593966466, now seen corresponding path program 1 times [2023-12-20 17:36:55,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:36:55,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667155019] [2023-12-20 17:36:55,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:36:55,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:36:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:36:55,563 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2023-12-20 17:36:55,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:36:55,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667155019] [2023-12-20 17:36:55,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667155019] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:36:55,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:36:55,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:36:55,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498911946] [2023-12-20 17:36:55,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:36:55,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:36:55,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:36:55,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:36:55,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:36:55,565 INFO L87 Difference]: Start difference. First operand 85280 states and 91911 transitions. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:36:57,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:36:57,741 INFO L93 Difference]: Finished difference Result 175669 states and 189302 transitions. [2023-12-20 17:36:57,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:36:57,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 592 [2023-12-20 17:36:57,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:36:57,877 INFO L225 Difference]: With dead ends: 175669 [2023-12-20 17:36:57,877 INFO L226 Difference]: Without dead ends: 88687 [2023-12-20 17:36:57,918 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 17:36:57,918 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 504 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:36:57,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 673 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 17:36:57,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88687 states. [2023-12-20 17:36:58,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88687 to 84849. [2023-12-20 17:36:58,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84849 states, 84848 states have (on average 1.0682396756552894) internal successors, (90638), 84848 states have internal predecessors, (90638), 0 states have call successors, (0), 0 states 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 17:36:59,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84849 states to 84849 states and 90638 transitions. [2023-12-20 17:36:59,055 INFO L78 Accepts]: Start accepts. Automaton has 84849 states and 90638 transitions. Word has length 592 [2023-12-20 17:36:59,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:36:59,055 INFO L495 AbstractCegarLoop]: Abstraction has 84849 states and 90638 transitions. [2023-12-20 17:36:59,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:36:59,056 INFO L276 IsEmpty]: Start isEmpty. Operand 84849 states and 90638 transitions. [2023-12-20 17:36:59,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2023-12-20 17:36:59,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:36:59,076 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-20 17:36:59,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 17:36:59,076 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:36:59,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:36:59,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1255622564, now seen corresponding path program 1 times [2023-12-20 17:36:59,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:36:59,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813191805] [2023-12-20 17:36:59,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:36:59,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:36:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:36:59,526 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 390 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-12-20 17:36:59,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:36:59,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813191805] [2023-12-20 17:36:59,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813191805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:36:59,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:36:59,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:36:59,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216235181] [2023-12-20 17:36:59,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:36:59,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:36:59,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:36:59,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:36:59,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:36:59,528 INFO L87 Difference]: Start difference. First operand 84849 states and 90638 transitions. Second operand has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states 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 17:37:02,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:37:02,227 INFO L93 Difference]: Finished difference Result 183319 states and 195676 transitions. [2023-12-20 17:37:02,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:37:02,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 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 635 [2023-12-20 17:37:02,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:37:02,489 INFO L225 Difference]: With dead ends: 183319 [2023-12-20 17:37:02,490 INFO L226 Difference]: Without dead ends: 98471 [2023-12-20 17:37:02,525 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 17:37:02,526 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 696 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 2420 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 2420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:37:02,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 315 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 2420 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 17:37:02,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98471 states. [2023-12-20 17:37:03,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98471 to 90794. [2023-12-20 17:37:03,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90794 states, 90793 states have (on average 1.0625488749132643) internal successors, (96472), 90793 states have internal predecessors, (96472), 0 states have call successors, (0), 0 states 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 17:37:03,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90794 states to 90794 states and 96472 transitions. [2023-12-20 17:37:03,508 INFO L78 Accepts]: Start accepts. Automaton has 90794 states and 96472 transitions. Word has length 635 [2023-12-20 17:37:03,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:37:03,509 INFO L495 AbstractCegarLoop]: Abstraction has 90794 states and 96472 transitions. [2023-12-20 17:37:03,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states 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 17:37:03,509 INFO L276 IsEmpty]: Start isEmpty. Operand 90794 states and 96472 transitions. [2023-12-20 17:37:03,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2023-12-20 17:37:03,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:37:03,526 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-20 17:37:03,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 17:37:03,526 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:37:03,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:37:03,526 INFO L85 PathProgramCache]: Analyzing trace with hash -116196281, now seen corresponding path program 1 times [2023-12-20 17:37:03,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:37:03,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81502274] [2023-12-20 17:37:03,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:37:03,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:37:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:37:04,065 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 396 proven. 0 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2023-12-20 17:37:04,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:37:04,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81502274] [2023-12-20 17:37:04,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81502274] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:37:04,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:37:04,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:37:04,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325537685] [2023-12-20 17:37:04,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:37:04,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:37:04,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:37:04,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:37:04,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:37:04,067 INFO L87 Difference]: Start difference. First operand 90794 states and 96472 transitions. Second operand has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states 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 17:37:06,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:37:06,665 INFO L93 Difference]: Finished difference Result 187134 states and 198736 transitions. [2023-12-20 17:37:06,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:37:06,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 641 [2023-12-20 17:37:06,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:37:06,775 INFO L225 Difference]: With dead ends: 187134 [2023-12-20 17:37:06,776 INFO L226 Difference]: Without dead ends: 96341 [2023-12-20 17:37:06,814 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 17:37:06,814 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 692 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2197 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 2337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 2197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:37:06,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 726 Invalid, 2337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 2197 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 17:37:06,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96341 states. [2023-12-20 17:37:07,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96341 to 91219. [2023-12-20 17:37:07,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91219 states, 91218 states have (on average 1.0624876669078471) internal successors, (96918), 91218 states have internal predecessors, (96918), 0 states have call successors, (0), 0 states 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 17:37:07,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91219 states to 91219 states and 96918 transitions. [2023-12-20 17:37:07,997 INFO L78 Accepts]: Start accepts. Automaton has 91219 states and 96918 transitions. Word has length 641 [2023-12-20 17:37:07,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:37:07,997 INFO L495 AbstractCegarLoop]: Abstraction has 91219 states and 96918 transitions. [2023-12-20 17:37:07,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states 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 17:37:07,997 INFO L276 IsEmpty]: Start isEmpty. Operand 91219 states and 96918 transitions. [2023-12-20 17:37:08,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2023-12-20 17:37:08,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:37:08,014 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:37:08,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 17:37:08,014 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:37:08,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:37:08,015 INFO L85 PathProgramCache]: Analyzing trace with hash 2059318088, now seen corresponding path program 1 times [2023-12-20 17:37:08,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:37:08,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190754324] [2023-12-20 17:37:08,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:37:08,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:37:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:37:08,606 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 561 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-12-20 17:37:08,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:37:08,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190754324] [2023-12-20 17:37:08,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190754324] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:37:08,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:37:08,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:37:08,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582685173] [2023-12-20 17:37:08,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:37:08,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:37:08,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:37:08,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:37:08,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:37:08,608 INFO L87 Difference]: Start difference. First operand 91219 states and 96918 transitions. Second operand has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states 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 17:37:10,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:37:10,438 INFO L93 Difference]: Finished difference Result 188378 states and 200006 transitions. [2023-12-20 17:37:10,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:37:10,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 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 647 [2023-12-20 17:37:10,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:37:10,561 INFO L225 Difference]: With dead ends: 188378 [2023-12-20 17:37:10,561 INFO L226 Difference]: Without dead ends: 95878 [2023-12-20 17:37:10,612 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 17:37:10,613 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 312 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:37:10,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 589 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 17:37:10,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95878 states. [2023-12-20 17:37:11,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95878 to 92467. [2023-12-20 17:37:11,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92467 states, 92466 states have (on average 1.0591244349274327) internal successors, (97933), 92466 states have internal predecessors, (97933), 0 states have call successors, (0), 0 states 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 17:37:11,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92467 states to 92467 states and 97933 transitions. [2023-12-20 17:37:11,842 INFO L78 Accepts]: Start accepts. Automaton has 92467 states and 97933 transitions. Word has length 647 [2023-12-20 17:37:11,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:37:11,842 INFO L495 AbstractCegarLoop]: Abstraction has 92467 states and 97933 transitions. [2023-12-20 17:37:11,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states 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 17:37:11,842 INFO L276 IsEmpty]: Start isEmpty. Operand 92467 states and 97933 transitions. [2023-12-20 17:37:11,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2023-12-20 17:37:11,860 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:37:11,860 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-20 17:37:11,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 17:37:11,860 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:37:11,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:37:11,861 INFO L85 PathProgramCache]: Analyzing trace with hash -326266107, now seen corresponding path program 1 times [2023-12-20 17:37:11,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:37:11,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438296633] [2023-12-20 17:37:11,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:37:11,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:37:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:37:13,217 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 664 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-20 17:37:13,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:37:13,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438296633] [2023-12-20 17:37:13,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438296633] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:37:13,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:37:13,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 17:37:13,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585266550] [2023-12-20 17:37:13,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:37:13,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 17:37:13,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:37:13,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 17:37:13,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:37:13,220 INFO L87 Difference]: Start difference. First operand 92467 states and 97933 transitions. Second operand has 6 states, 6 states have (on average 110.5) internal successors, (663), 5 states have internal predecessors, (663), 0 states have call successors, (0), 0 states 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 17:37:16,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:37:16,059 INFO L93 Difference]: Finished difference Result 176518 states and 186917 transitions. [2023-12-20 17:37:16,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 17:37:16,061 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 110.5) internal successors, (663), 5 states have internal predecessors, (663), 0 states have call successors, (0), 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 667 [2023-12-20 17:37:16,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:37:16,182 INFO L225 Difference]: With dead ends: 176518 [2023-12-20 17:37:16,183 INFO L226 Difference]: Without dead ends: 84050 [2023-12-20 17:37:16,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:37:16,238 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 1404 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4118 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 4287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 4118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:37:16,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1404 Valid, 190 Invalid, 4287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 4118 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 17:37:16,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84050 states. [2023-12-20 17:37:17,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84050 to 81791. [2023-12-20 17:37:17,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81791 states, 81790 states have (on average 1.0585890695684068) internal successors, (86582), 81790 states have internal predecessors, (86582), 0 states have call successors, (0), 0 states 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 17:37:17,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81791 states to 81791 states and 86582 transitions. [2023-12-20 17:37:17,263 INFO L78 Accepts]: Start accepts. Automaton has 81791 states and 86582 transitions. Word has length 667 [2023-12-20 17:37:17,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:37:17,263 INFO L495 AbstractCegarLoop]: Abstraction has 81791 states and 86582 transitions. [2023-12-20 17:37:17,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.5) internal successors, (663), 5 states have internal predecessors, (663), 0 states have call successors, (0), 0 states 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 17:37:17,263 INFO L276 IsEmpty]: Start isEmpty. Operand 81791 states and 86582 transitions. [2023-12-20 17:37:17,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2023-12-20 17:37:17,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:37:17,532 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:37:17,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 17:37:17,533 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:37:17,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:37:17,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1366553936, now seen corresponding path program 1 times [2023-12-20 17:37:17,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:37:17,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449334932] [2023-12-20 17:37:17,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:37:17,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:37:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:37:17,858 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2023-12-20 17:37:17,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:37:17,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449334932] [2023-12-20 17:37:17,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449334932] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:37:17,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:37:17,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:37:17,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020851810] [2023-12-20 17:37:17,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:37:17,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:37:17,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:37:17,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:37:17,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:37:17,862 INFO L87 Difference]: Start difference. First operand 81791 states and 86582 transitions. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states 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 17:37:19,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:37:19,671 INFO L93 Difference]: Finished difference Result 165284 states and 174956 transitions. [2023-12-20 17:37:19,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:37:19,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 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 734 [2023-12-20 17:37:19,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:37:19,766 INFO L225 Difference]: With dead ends: 165284 [2023-12-20 17:37:19,766 INFO L226 Difference]: Without dead ends: 83494 [2023-12-20 17:37:19,812 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 17:37:19,812 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 442 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:37:19,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 284 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 17:37:19,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83494 states. [2023-12-20 17:37:20,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83494 to 79237. [2023-12-20 17:37:20,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79237 states, 79236 states have (on average 1.058332071280731) internal successors, (83858), 79236 states have internal predecessors, (83858), 0 states have call successors, (0), 0 states 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 17:37:20,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79237 states to 79237 states and 83858 transitions. [2023-12-20 17:37:20,955 INFO L78 Accepts]: Start accepts. Automaton has 79237 states and 83858 transitions. Word has length 734 [2023-12-20 17:37:20,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:37:20,956 INFO L495 AbstractCegarLoop]: Abstraction has 79237 states and 83858 transitions. [2023-12-20 17:37:20,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states 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 17:37:20,956 INFO L276 IsEmpty]: Start isEmpty. Operand 79237 states and 83858 transitions. [2023-12-20 17:37:20,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 741 [2023-12-20 17:37:20,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:37:20,979 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:37:20,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 17:37:20,979 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:37:20,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:37:20,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1460958665, now seen corresponding path program 1 times [2023-12-20 17:37:20,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:37:20,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762392548] [2023-12-20 17:37:20,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:37:20,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:37:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:37:21,560 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 912 trivial. 0 not checked. [2023-12-20 17:37:21,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:37:21,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762392548] [2023-12-20 17:37:21,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762392548] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:37:21,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:37:21,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:37:21,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736575310] [2023-12-20 17:37:21,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:37:21,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:37:21,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:37:21,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:37:21,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:37:21,562 INFO L87 Difference]: Start difference. First operand 79237 states and 83858 transitions. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states 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 17:37:23,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:37:23,154 INFO L93 Difference]: Finished difference Result 158897 states and 168154 transitions. [2023-12-20 17:37:23,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:37:23,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 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 740 [2023-12-20 17:37:23,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:37:23,239 INFO L225 Difference]: With dead ends: 158897 [2023-12-20 17:37:23,239 INFO L226 Difference]: Without dead ends: 79236 [2023-12-20 17:37:23,277 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 17:37:23,277 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 442 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:37:23,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 710 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 17:37:23,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79236 states. [2023-12-20 17:37:24,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79236 to 76255. [2023-12-20 17:37:24,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76255 states, 76254 states have (on average 1.0565347391612243) internal successors, (80565), 76254 states have internal predecessors, (80565), 0 states have call successors, (0), 0 states 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 17:37:24,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76255 states to 76255 states and 80565 transitions. [2023-12-20 17:37:24,270 INFO L78 Accepts]: Start accepts. Automaton has 76255 states and 80565 transitions. Word has length 740 [2023-12-20 17:37:24,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:37:24,271 INFO L495 AbstractCegarLoop]: Abstraction has 76255 states and 80565 transitions. [2023-12-20 17:37:24,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states 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 17:37:24,271 INFO L276 IsEmpty]: Start isEmpty. Operand 76255 states and 80565 transitions. [2023-12-20 17:37:24,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 741 [2023-12-20 17:37:24,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:37:24,290 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2023-12-20 17:37:24,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 17:37:24,290 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:37:24,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:37:24,291 INFO L85 PathProgramCache]: Analyzing trace with hash -624365849, now seen corresponding path program 1 times [2023-12-20 17:37:24,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:37:24,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520146409] [2023-12-20 17:37:24,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:37:24,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:37:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:37:25,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1097 backedges. 910 proven. 105 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-20 17:37:25,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:37:25,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520146409] [2023-12-20 17:37:25,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520146409] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:37:25,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311512821] [2023-12-20 17:37:25,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:37:25,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:37:25,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:37:25,025 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 17:37:25,053 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 17:37:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:37:25,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:37:25,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:37:25,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1097 backedges. 951 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-12-20 17:37:25,768 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:37:25,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311512821] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:37:25,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:37:25,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-12-20 17:37:25,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552992889] [2023-12-20 17:37:25,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:37:25,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 17:37:25,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:37:25,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 17:37:25,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:37:25,770 INFO L87 Difference]: Start difference. First operand 76255 states and 80565 transitions. Second operand has 5 states, 5 states have (on average 119.2) internal successors, (596), 5 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 17:37:28,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:37:28,931 INFO L93 Difference]: Finished difference Result 163604 states and 172690 transitions. [2023-12-20 17:37:28,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 17:37:28,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 119.2) internal successors, (596), 5 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 740 [2023-12-20 17:37:28,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:37:29,030 INFO L225 Difference]: With dead ends: 163604 [2023-12-20 17:37:29,030 INFO L226 Difference]: Without dead ends: 87350 [2023-12-20 17:37:29,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 738 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 17:37:29,076 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 1162 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 4021 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 4211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 4021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:37:29,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 266 Invalid, 4211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 4021 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 17:37:29,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87350 states. [2023-12-20 17:37:29,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87350 to 83076. [2023-12-20 17:37:30,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83076 states, 83075 states have (on average 1.0524947336743906) internal successors, (87436), 83075 states have internal predecessors, (87436), 0 states have call successors, (0), 0 states 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 17:37:30,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83076 states to 83076 states and 87436 transitions. [2023-12-20 17:37:30,094 INFO L78 Accepts]: Start accepts. Automaton has 83076 states and 87436 transitions. Word has length 740 [2023-12-20 17:37:30,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:37:30,095 INFO L495 AbstractCegarLoop]: Abstraction has 83076 states and 87436 transitions. [2023-12-20 17:37:30,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.2) internal successors, (596), 5 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 17:37:30,095 INFO L276 IsEmpty]: Start isEmpty. Operand 83076 states and 87436 transitions. [2023-12-20 17:37:30,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2023-12-20 17:37:30,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:37:30,125 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:37:30,130 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 17:37:30,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:37:30,331 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:37:30,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:37:30,331 INFO L85 PathProgramCache]: Analyzing trace with hash -948621124, now seen corresponding path program 1 times [2023-12-20 17:37:30,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:37:30,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444937700] [2023-12-20 17:37:30,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:37:30,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:37:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:37:30,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1130 backedges. 797 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2023-12-20 17:37:30,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:37:30,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444937700] [2023-12-20 17:37:30,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444937700] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:37:30,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:37:30,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:37:30,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822734818] [2023-12-20 17:37:30,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:37:30,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:37:30,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:37:30,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:37:30,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:37:30,869 INFO L87 Difference]: Start difference. First operand 83076 states and 87436 transitions. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states 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 17:37:32,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:37:32,578 INFO L93 Difference]: Finished difference Result 176363 states and 185739 transitions. [2023-12-20 17:37:32,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:37:32,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 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 801 [2023-12-20 17:37:32,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:37:32,678 INFO L225 Difference]: With dead ends: 176363 [2023-12-20 17:37:32,678 INFO L226 Difference]: Without dead ends: 92861 [2023-12-20 17:37:32,716 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 17:37:32,716 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 372 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:37:32,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 617 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 17:37:32,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92861 states. [2023-12-20 17:37:33,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92861 to 89874. [2023-12-20 17:37:33,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89874 states, 89873 states have (on average 1.0515282676665962) internal successors, (94504), 89873 states have internal predecessors, (94504), 0 states have call successors, (0), 0 states 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 17:37:33,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89874 states to 89874 states and 94504 transitions. [2023-12-20 17:37:33,644 INFO L78 Accepts]: Start accepts. Automaton has 89874 states and 94504 transitions. Word has length 801 [2023-12-20 17:37:33,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:37:33,644 INFO L495 AbstractCegarLoop]: Abstraction has 89874 states and 94504 transitions. [2023-12-20 17:37:33,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states 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 17:37:33,644 INFO L276 IsEmpty]: Start isEmpty. Operand 89874 states and 94504 transitions. [2023-12-20 17:37:33,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2023-12-20 17:37:33,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:37:33,671 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:37:33,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 17:37:33,672 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:37:33,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:37:33,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1969545718, now seen corresponding path program 1 times [2023-12-20 17:37:33,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:37:33,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980590328] [2023-12-20 17:37:33,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:37:33,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:37:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:37:34,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 995 proven. 0 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2023-12-20 17:37:34,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:37:34,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980590328] [2023-12-20 17:37:34,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980590328] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:37:34,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:37:34,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:37:34,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326457510] [2023-12-20 17:37:34,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:37:34,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:37:34,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:37:34,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:37:34,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:37:34,313 INFO L87 Difference]: Start difference. First operand 89874 states and 94504 transitions. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states 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 17:37:35,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:37:35,931 INFO L93 Difference]: Finished difference Result 189121 states and 198847 transitions. [2023-12-20 17:37:35,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:37:35,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 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 813 [2023-12-20 17:37:35,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:37:36,047 INFO L225 Difference]: With dead ends: 189121 [2023-12-20 17:37:36,048 INFO L226 Difference]: Without dead ends: 99248 [2023-12-20 17:37:36,107 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 17:37:36,107 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 318 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:37:36,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 656 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 17:37:36,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99248 states. [2023-12-20 17:37:37,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99248 to 97952. [2023-12-20 17:37:37,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97952 states, 97951 states have (on average 1.0493103694704495) internal successors, (102781), 97951 states have internal predecessors, (102781), 0 states have call successors, (0), 0 states 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 17:37:37,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97952 states to 97952 states and 102781 transitions. [2023-12-20 17:37:37,361 INFO L78 Accepts]: Start accepts. Automaton has 97952 states and 102781 transitions. Word has length 813 [2023-12-20 17:37:37,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:37:37,361 INFO L495 AbstractCegarLoop]: Abstraction has 97952 states and 102781 transitions. [2023-12-20 17:37:37,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states 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 17:37:37,361 INFO L276 IsEmpty]: Start isEmpty. Operand 97952 states and 102781 transitions. [2023-12-20 17:37:37,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2023-12-20 17:37:37,388 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:37:37,388 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:37:37,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 17:37:37,388 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:37:37,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:37:37,389 INFO L85 PathProgramCache]: Analyzing trace with hash -464866687, now seen corresponding path program 1 times [2023-12-20 17:37:37,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:37:37,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475721489] [2023-12-20 17:37:37,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:37:37,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:37:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:37:37,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 477 proven. 73 refuted. 0 times theorem prover too weak. 606 trivial. 0 not checked. [2023-12-20 17:37:37,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:37:37,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475721489] [2023-12-20 17:37:37,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475721489] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:37:37,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29867559] [2023-12-20 17:37:37,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:37:37,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:37:37,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:37:37,993 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 17:37:37,995 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 17:37:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:37:38,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 995 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:37:38,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:37:38,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 477 proven. 73 refuted. 0 times theorem prover too weak. 606 trivial. 0 not checked. [2023-12-20 17:37:38,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:37:38,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 550 proven. 0 refuted. 0 times theorem prover too weak. 606 trivial. 0 not checked. [2023-12-20 17:37:38,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29867559] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 17:37:38,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-20 17:37:38,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-12-20 17:37:38,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065140637] [2023-12-20 17:37:38,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:37:38,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:37:38,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:37:38,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:37:38,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:37:38,555 INFO L87 Difference]: Start difference. First operand 97952 states and 102781 transitions. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states 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 17:37:41,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:37:41,221 INFO L93 Difference]: Finished difference Result 210391 states and 220801 transitions. [2023-12-20 17:37:41,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:37:41,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 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 825 [2023-12-20 17:37:41,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:37:41,336 INFO L225 Difference]: With dead ends: 210391 [2023-12-20 17:37:41,336 INFO L226 Difference]: Without dead ends: 112440 [2023-12-20 17:37:41,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1651 GetRequests, 1647 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 17:37:41,383 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 781 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 2173 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 2471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 2173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:37:41,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 174 Invalid, 2471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 2173 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 17:37:41,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112440 states. [2023-12-20 17:37:42,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112440 to 104784. [2023-12-20 17:37:42,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104784 states, 104783 states have (on average 1.0488915186623784) internal successors, (109906), 104783 states have internal predecessors, (109906), 0 states have call successors, (0), 0 states 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 17:37:42,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104784 states to 104784 states and 109906 transitions. [2023-12-20 17:37:42,831 INFO L78 Accepts]: Start accepts. Automaton has 104784 states and 109906 transitions. Word has length 825 [2023-12-20 17:37:42,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:37:42,832 INFO L495 AbstractCegarLoop]: Abstraction has 104784 states and 109906 transitions. [2023-12-20 17:37:42,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states 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 17:37:42,832 INFO L276 IsEmpty]: Start isEmpty. Operand 104784 states and 109906 transitions. [2023-12-20 17:37:42,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 862 [2023-12-20 17:37:42,860 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:37:42,860 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:37:42,865 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 17:37:43,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-20 17:37:43,062 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:37:43,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:37:43,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1340061413, now seen corresponding path program 1 times [2023-12-20 17:37:43,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:37:43,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968038471] [2023-12-20 17:37:43,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:37:43,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:37:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:37:43,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 836 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-12-20 17:37:43,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:37:43,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968038471] [2023-12-20 17:37:43,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968038471] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:37:43,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:37:43,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:37:43,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91832148] [2023-12-20 17:37:43,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:37:43,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:37:43,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:37:43,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:37:43,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:37:43,686 INFO L87 Difference]: Start difference. First operand 104784 states and 109906 transitions. Second operand has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:37:46,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:37:46,405 INFO L93 Difference]: Finished difference Result 219353 states and 229946 transitions. [2023-12-20 17:37:46,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:37:46,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 861 [2023-12-20 17:37:46,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:37:46,531 INFO L225 Difference]: With dead ends: 219353 [2023-12-20 17:37:46,531 INFO L226 Difference]: Without dead ends: 114570 [2023-12-20 17:37:46,545 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 17:37:46,546 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 627 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 2140 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 2539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 2140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:37:46,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 125 Invalid, 2539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 2140 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 17:37:46,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114570 states. [2023-12-20 17:37:47,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114570 to 101809. [2023-12-20 17:37:47,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101809 states, 101808 states have (on average 1.046450180732359) internal successors, (106537), 101808 states have internal predecessors, (106537), 0 states have call successors, (0), 0 states 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 17:37:47,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101809 states to 101809 states and 106537 transitions. [2023-12-20 17:37:47,801 INFO L78 Accepts]: Start accepts. Automaton has 101809 states and 106537 transitions. Word has length 861 [2023-12-20 17:37:47,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:37:47,801 INFO L495 AbstractCegarLoop]: Abstraction has 101809 states and 106537 transitions. [2023-12-20 17:37:47,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:37:47,801 INFO L276 IsEmpty]: Start isEmpty. Operand 101809 states and 106537 transitions. [2023-12-20 17:37:47,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 874 [2023-12-20 17:37:47,832 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:37:47,832 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:37:47,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-20 17:37:47,832 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:37:47,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:37:47,833 INFO L85 PathProgramCache]: Analyzing trace with hash -95928659, now seen corresponding path program 1 times [2023-12-20 17:37:47,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:37:47,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21084076] [2023-12-20 17:37:47,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:37:47,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:37:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:37:48,419 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 532 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2023-12-20 17:37:48,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:37:48,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21084076] [2023-12-20 17:37:48,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21084076] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:37:48,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:37:48,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:37:48,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697021806] [2023-12-20 17:37:48,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:37:48,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:37:48,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:37:48,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:37:48,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:37:48,421 INFO L87 Difference]: Start difference. First operand 101809 states and 106537 transitions. Second operand has 4 states, 4 states have (on average 154.25) internal successors, (617), 4 states have internal predecessors, (617), 0 states have call successors, (0), 0 states 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 17:37:50,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:37:50,919 INFO L93 Difference]: Finished difference Result 214290 states and 224078 transitions. [2023-12-20 17:37:50,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:37:50,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 154.25) internal successors, (617), 4 states have internal predecessors, (617), 0 states have call successors, (0), 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 873 [2023-12-20 17:37:50,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:37:51,051 INFO L225 Difference]: With dead ends: 214290 [2023-12-20 17:37:51,052 INFO L226 Difference]: Without dead ends: 112482 [2023-12-20 17:37:51,113 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 17:37:51,114 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 683 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 2142 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 2323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:37:51,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 204 Invalid, 2323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2142 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 17:37:51,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112482 states. [2023-12-20 17:37:52,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112482 to 101809. [2023-12-20 17:37:52,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101809 states, 101808 states have (on average 1.046312666980984) internal successors, (106523), 101808 states have internal predecessors, (106523), 0 states have call successors, (0), 0 states 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 17:37:52,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101809 states to 101809 states and 106523 transitions. [2023-12-20 17:37:52,585 INFO L78 Accepts]: Start accepts. Automaton has 101809 states and 106523 transitions. Word has length 873 [2023-12-20 17:37:52,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:37:52,586 INFO L495 AbstractCegarLoop]: Abstraction has 101809 states and 106523 transitions. [2023-12-20 17:37:52,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 154.25) internal successors, (617), 4 states have internal predecessors, (617), 0 states have call successors, (0), 0 states 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 17:37:52,586 INFO L276 IsEmpty]: Start isEmpty. Operand 101809 states and 106523 transitions. [2023-12-20 17:37:52,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 894 [2023-12-20 17:37:52,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:37:52,618 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:37:52,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-20 17:37:52,618 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:37:52,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:37:52,618 INFO L85 PathProgramCache]: Analyzing trace with hash -574745514, now seen corresponding path program 1 times [2023-12-20 17:37:52,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:37:52,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098575230] [2023-12-20 17:37:52,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:37:52,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:37:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:37:53,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1178 backedges. 909 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-12-20 17:37:53,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:37:53,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098575230] [2023-12-20 17:37:53,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098575230] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:37:53,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:37:53,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:37:53,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522821489] [2023-12-20 17:37:53,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:37:53,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:37:53,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:37:53,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:37:53,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:37:53,271 INFO L87 Difference]: Start difference. First operand 101809 states and 106523 transitions. Second operand has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states 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 17:37:55,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:37:55,771 INFO L93 Difference]: Finished difference Result 211703 states and 221384 transitions. [2023-12-20 17:37:55,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:37:55,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 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 893 [2023-12-20 17:37:55,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:37:55,910 INFO L225 Difference]: With dead ends: 211703 [2023-12-20 17:37:55,910 INFO L226 Difference]: Without dead ends: 109895 [2023-12-20 17:37:56,146 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 17:37:56,156 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 592 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 2144 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 2492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 2144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:37:56,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 136 Invalid, 2492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 2144 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 17:37:56,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109895 states. [2023-12-20 17:37:57,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109895 to 101384. [2023-12-20 17:37:57,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101384 states, 101383 states have (on average 1.0462010396220274) internal successors, (106067), 101383 states have internal predecessors, (106067), 0 states have call successors, (0), 0 states 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 17:37:57,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101384 states to 101384 states and 106067 transitions. [2023-12-20 17:37:57,479 INFO L78 Accepts]: Start accepts. Automaton has 101384 states and 106067 transitions. Word has length 893 [2023-12-20 17:37:57,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:37:57,479 INFO L495 AbstractCegarLoop]: Abstraction has 101384 states and 106067 transitions. [2023-12-20 17:37:57,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states 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 17:37:57,480 INFO L276 IsEmpty]: Start isEmpty. Operand 101384 states and 106067 transitions. [2023-12-20 17:37:57,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 902 [2023-12-20 17:37:57,509 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:37:57,509 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2023-12-20 17:37:57,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-20 17:37:57,509 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:37:57,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:37:57,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1052043824, now seen corresponding path program 1 times [2023-12-20 17:37:57,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:37:57,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200275075] [2023-12-20 17:37:57,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:37:57,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:37:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:37:58,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1737 backedges. 1056 proven. 0 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2023-12-20 17:37:58,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:37:58,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200275075] [2023-12-20 17:37:58,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200275075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:37:58,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:37:58,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:37:58,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884456157] [2023-12-20 17:37:58,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:37:58,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:37:58,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:37:58,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:37:58,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:37:58,171 INFO L87 Difference]: Start difference. First operand 101384 states and 106067 transitions. Second operand has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states 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 17:38:00,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:38:00,027 INFO L93 Difference]: Finished difference Result 198918 states and 208100 transitions. [2023-12-20 17:38:00,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:38:00,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 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 901 [2023-12-20 17:38:00,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:38:00,135 INFO L225 Difference]: With dead ends: 198918 [2023-12-20 17:38:00,135 INFO L226 Difference]: Without dead ends: 97535 [2023-12-20 17:38:00,192 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 17:38:00,193 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 343 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:38:00,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 234 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 17:38:00,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97535 states. [2023-12-20 17:38:01,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97535 to 85593. [2023-12-20 17:38:01,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85593 states, 85592 states have (on average 1.0375385550051406) internal successors, (88805), 85592 states have internal predecessors, (88805), 0 states have call successors, (0), 0 states 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 17:38:01,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85593 states to 85593 states and 88805 transitions. [2023-12-20 17:38:01,376 INFO L78 Accepts]: Start accepts. Automaton has 85593 states and 88805 transitions. Word has length 901 [2023-12-20 17:38:01,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:38:01,376 INFO L495 AbstractCegarLoop]: Abstraction has 85593 states and 88805 transitions. [2023-12-20 17:38:01,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states 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 17:38:01,376 INFO L276 IsEmpty]: Start isEmpty. Operand 85593 states and 88805 transitions. [2023-12-20 17:38:01,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 903 [2023-12-20 17:38:01,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:38:01,406 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:38:01,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-20 17:38:01,406 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:38:01,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:38:01,406 INFO L85 PathProgramCache]: Analyzing trace with hash 179346290, now seen corresponding path program 1 times [2023-12-20 17:38:01,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:38:01,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206717109] [2023-12-20 17:38:01,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:38:01,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:38:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:38:02,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1258 backedges. 1071 proven. 105 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-20 17:38:02,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:38:02,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206717109] [2023-12-20 17:38:02,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206717109] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:38:02,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807382116] [2023-12-20 17:38:02,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:38:02,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:38:02,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:38:02,304 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 17:38:02,305 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 17:38:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:38:02,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 1072 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 17:38:02,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:38:03,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1258 backedges. 903 proven. 273 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-20 17:38:03,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:38:04,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1258 backedges. 926 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2023-12-20 17:38:04,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807382116] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 17:38:04,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-20 17:38:04,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 12 [2023-12-20 17:38:04,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638998296] [2023-12-20 17:38:04,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:38:04,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 17:38:04,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:38:04,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 17:38:04,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-12-20 17:38:04,080 INFO L87 Difference]: Start difference. First operand 85593 states and 88805 transitions. Second operand has 5 states, 5 states have (on average 130.8) internal successors, (654), 5 states have internal predecessors, (654), 0 states have call successors, (0), 0 states 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 17:38:06,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:38:06,964 INFO L93 Difference]: Finished difference Result 182239 states and 188928 transitions. [2023-12-20 17:38:06,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 17:38:06,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 130.8) internal successors, (654), 5 states have internal predecessors, (654), 0 states have call successors, (0), 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 902 [2023-12-20 17:38:06,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:38:07,097 INFO L225 Difference]: With dead ends: 182239 [2023-12-20 17:38:07,098 INFO L226 Difference]: Without dead ends: 96647 [2023-12-20 17:38:07,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1807 GetRequests, 1797 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 17:38:07,126 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 1365 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1365 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 2549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 476 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:38:07,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1365 Valid, 103 Invalid, 2549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [476 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 17:38:07,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96647 states. [2023-12-20 17:38:07,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96647 to 86018. [2023-12-20 17:38:07,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86018 states, 86017 states have (on average 1.0376902240254833) internal successors, (89259), 86017 states have internal predecessors, (89259), 0 states have call successors, (0), 0 states 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 17:38:08,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86018 states to 86018 states and 89259 transitions. [2023-12-20 17:38:08,067 INFO L78 Accepts]: Start accepts. Automaton has 86018 states and 89259 transitions. Word has length 902 [2023-12-20 17:38:08,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:38:08,067 INFO L495 AbstractCegarLoop]: Abstraction has 86018 states and 89259 transitions. [2023-12-20 17:38:08,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 130.8) internal successors, (654), 5 states have internal predecessors, (654), 0 states have call successors, (0), 0 states 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 17:38:08,068 INFO L276 IsEmpty]: Start isEmpty. Operand 86018 states and 89259 transitions. [2023-12-20 17:38:08,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 951 [2023-12-20 17:38:08,279 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:38:08,279 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2023-12-20 17:38:08,284 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 17:38:08,484 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,SelfDestructingSolverStorable32 [2023-12-20 17:38:08,484 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:38:08,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:38:08,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1732772688, now seen corresponding path program 1 times [2023-12-20 17:38:08,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:38:08,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528854442] [2023-12-20 17:38:08,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:38:08,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:38:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:38:09,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1692 backedges. 715 proven. 0 refuted. 0 times theorem prover too weak. 977 trivial. 0 not checked. [2023-12-20 17:38:09,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:38:09,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528854442] [2023-12-20 17:38:09,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528854442] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:38:09,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:38:09,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:38:09,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718386485] [2023-12-20 17:38:09,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:38:09,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:38:09,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:38:09,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:38:09,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:38:09,566 INFO L87 Difference]: Start difference. First operand 86018 states and 89259 transitions. Second operand has 4 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 states 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 17:38:11,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:38:11,940 INFO L93 Difference]: Finished difference Result 179706 states and 186382 transitions. [2023-12-20 17:38:11,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:38:11,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 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 950 [2023-12-20 17:38:11,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:38:12,042 INFO L225 Difference]: With dead ends: 179706 [2023-12-20 17:38:12,042 INFO L226 Difference]: Without dead ends: 93689 [2023-12-20 17:38:12,086 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 17:38:12,087 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 624 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 3069 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 3142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 3069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:38:12,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 731 Invalid, 3142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 3069 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 17:38:12,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93689 states. [2023-12-20 17:38:12,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93689 to 86018. [2023-12-20 17:38:12,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86018 states, 86017 states have (on average 1.037550716718788) internal successors, (89247), 86017 states have internal predecessors, (89247), 0 states have call successors, (0), 0 states 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 17:38:13,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86018 states to 86018 states and 89247 transitions. [2023-12-20 17:38:13,004 INFO L78 Accepts]: Start accepts. Automaton has 86018 states and 89247 transitions. Word has length 950 [2023-12-20 17:38:13,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:38:13,005 INFO L495 AbstractCegarLoop]: Abstraction has 86018 states and 89247 transitions. [2023-12-20 17:38:13,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 states 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 17:38:13,005 INFO L276 IsEmpty]: Start isEmpty. Operand 86018 states and 89247 transitions. [2023-12-20 17:38:13,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 971 [2023-12-20 17:38:13,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:38:13,037 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2023-12-20 17:38:13,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-20 17:38:13,038 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:38:13,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:38:13,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1813417741, now seen corresponding path program 1 times [2023-12-20 17:38:13,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:38:13,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552274170] [2023-12-20 17:38:13,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:38:13,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:38:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:38:14,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1714 backedges. 777 proven. 82 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2023-12-20 17:38:14,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:38:14,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552274170] [2023-12-20 17:38:14,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552274170] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:38:14,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115520796] [2023-12-20 17:38:14,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:38:14,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:38:14,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:38:14,546 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 17:38:14,547 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 17:38:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:38:14,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 1162 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 17:38:14,782 INFO L285 TraceCheckSpWp]: Computing forward predicates...