/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-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 23:07:13,575 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 23:07:13,666 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-25 23:07:13,672 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 23:07:13,672 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 23:07:13,700 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 23:07:13,701 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 23:07:13,701 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 23:07:13,702 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 23:07:13,705 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 23:07:13,705 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 23:07:13,706 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 23:07:13,706 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 23:07:13,708 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 23:07:13,708 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 23:07:13,708 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 23:07:13,708 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 23:07:13,709 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-25 23:07:13,710 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 23:07:13,710 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 23:07:13,710 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 23:07:13,710 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 23:07:13,711 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 23:07:13,711 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 23:07:13,711 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 23:07:13,712 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 23:07:13,712 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 23:07:13,712 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 23:07:13,712 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 23:07:13,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 23:07:13,713 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 23:07:13,713 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 23:07:13,714 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 23:07:13,714 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-25 23:07:13,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-25 23:07:13,714 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 23:07:13,714 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 23:07:13,714 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 23:07:13,715 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 23:07:13,715 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 23:07:13,715 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-25 23:07:13,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 23:07:13,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 23:07:13,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 23:07:13,970 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 23:07:13,971 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 23:07:13,972 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c [2023-12-25 23:07:15,109 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 23:07:15,344 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 23:07:15,344 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c [2023-12-25 23:07:15,356 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb67bbeb3/fe8bb49bd6df4a8ba35ccbd7370ca217/FLAG46798de71 [2023-12-25 23:07:15,367 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb67bbeb3/fe8bb49bd6df4a8ba35ccbd7370ca217 [2023-12-25 23:07:15,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 23:07:15,373 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 23:07:15,374 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 23:07:15,374 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 23:07:15,380 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 23:07:15,381 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 11:07:15" (1/1) ... [2023-12-25 23:07:15,381 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fd061fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:07:15, skipping insertion in model container [2023-12-25 23:07:15,381 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 11:07:15" (1/1) ... [2023-12-25 23:07:15,429 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 23:07:15,563 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c[1258,1271] [2023-12-25 23:07:15,719 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 23:07:15,732 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 23:07:15,744 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c[1258,1271] [2023-12-25 23:07:15,856 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 23:07:15,873 INFO L206 MainTranslator]: Completed translation [2023-12-25 23:07:15,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:07:15 WrapperNode [2023-12-25 23:07:15,874 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 23:07:15,875 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 23:07:15,875 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 23:07:15,875 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 23:07:15,880 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:07:15" (1/1) ... [2023-12-25 23:07:15,905 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:07:15" (1/1) ... [2023-12-25 23:07:16,092 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1644 [2023-12-25 23:07:16,092 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 23:07:16,093 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 23:07:16,093 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 23:07:16,094 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 23:07:16,103 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:07:15" (1/1) ... [2023-12-25 23:07:16,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:07:15" (1/1) ... [2023-12-25 23:07:16,136 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:07:15" (1/1) ... [2023-12-25 23:07:16,230 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]. [2023-12-25 23:07:16,230 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:07:15" (1/1) ... [2023-12-25 23:07:16,230 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:07:15" (1/1) ... [2023-12-25 23:07:16,278 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:07:15" (1/1) ... [2023-12-25 23:07:16,302 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:07:15" (1/1) ... [2023-12-25 23:07:16,336 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:07:15" (1/1) ... [2023-12-25 23:07:16,357 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:07:15" (1/1) ... [2023-12-25 23:07:16,373 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 23:07:16,374 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 23:07:16,374 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 23:07:16,374 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 23:07:16,375 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:07:15" (1/1) ... [2023-12-25 23:07:16,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 23:07:16,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:07:16,401 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) [2023-12-25 23:07:16,432 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 [2023-12-25 23:07:16,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 23:07:16,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-25 23:07:16,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 23:07:16,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 23:07:16,637 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 23:07:16,639 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 23:07:17,631 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 23:07:17,681 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 23:07:17,681 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 23:07:17,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 11:07:17 BoogieIcfgContainer [2023-12-25 23:07:17,682 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 23:07:17,684 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 23:07:17,684 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 23:07:17,687 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 23:07:17,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 11:07:15" (1/3) ... [2023-12-25 23:07:17,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68cdf60b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 11:07:17, skipping insertion in model container [2023-12-25 23:07:17,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:07:15" (2/3) ... [2023-12-25 23:07:17,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68cdf60b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 11:07:17, skipping insertion in model container [2023-12-25 23:07:17,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 11:07:17" (3/3) ... [2023-12-25 23:07:17,690 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_vMiim_p1.c [2023-12-25 23:07:17,704 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 23:07:17,704 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 23:07:17,759 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 23:07:17,765 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;@e69067c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 23:07:17,765 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 23:07:17,771 INFO L276 IsEmpty]: Start isEmpty. Operand has 260 states, 258 states have (on average 1.6666666666666667) internal successors, (430), 259 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:17,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-25 23:07:17,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:07:17,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:07:17,783 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:07:17,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:07:17,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1623680595, now seen corresponding path program 1 times [2023-12-25 23:07:17,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:07:17,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797681043] [2023-12-25 23:07:17,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:07:17,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:07:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:07:18,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:07:18,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:07:18,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797681043] [2023-12-25 23:07:18,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797681043] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:07:18,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:07:18,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:07:18,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513956278] [2023-12-25 23:07:18,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:07:18,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 23:07:18,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:07:18,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 23:07:18,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:07:18,532 INFO L87 Difference]: Start difference. First operand has 260 states, 258 states have (on average 1.6666666666666667) internal successors, (430), 259 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:18,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:07:18,608 INFO L93 Difference]: Finished difference Result 426 states and 706 transitions. [2023-12-25 23:07:18,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 23:07:18,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2023-12-25 23:07:18,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:07:18,618 INFO L225 Difference]: With dead ends: 426 [2023-12-25 23:07:18,618 INFO L226 Difference]: Without dead ends: 260 [2023-12-25 23:07:18,620 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 [2023-12-25 23:07:18,622 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 1 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:07:18,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1264 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:07:18,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-12-25 23:07:18,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2023-12-25 23:07:18,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 1.6525096525096525) internal successors, (428), 259 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:18,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 428 transitions. [2023-12-25 23:07:18,663 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 428 transitions. Word has length 84 [2023-12-25 23:07:18,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:07:18,664 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 428 transitions. [2023-12-25 23:07:18,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:18,664 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 428 transitions. [2023-12-25 23:07:18,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-25 23:07:18,666 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:07:18,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:07:18,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-25 23:07:18,667 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:07:18,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:07:18,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1207234535, now seen corresponding path program 1 times [2023-12-25 23:07:18,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:07:18,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809918476] [2023-12-25 23:07:18,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:07:18,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:07:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:07:18,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:07:18,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:07:18,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809918476] [2023-12-25 23:07:18,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809918476] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:07:18,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:07:18,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:07:18,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994155426] [2023-12-25 23:07:18,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:07:18,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 23:07:18,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:07:18,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 23:07:18,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:07:18,912 INFO L87 Difference]: Start difference. First operand 260 states and 428 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:18,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:07:18,948 INFO L93 Difference]: Finished difference Result 429 states and 704 transitions. [2023-12-25 23:07:18,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 23:07:18,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2023-12-25 23:07:18,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:07:18,950 INFO L225 Difference]: With dead ends: 429 [2023-12-25 23:07:18,950 INFO L226 Difference]: Without dead ends: 263 [2023-12-25 23:07:18,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:07:18,952 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 1 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:07:18,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1262 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:07:18,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-12-25 23:07:18,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 262. [2023-12-25 23:07:18,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 1.6475095785440612) internal successors, (430), 261 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:18,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 430 transitions. [2023-12-25 23:07:18,965 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 430 transitions. Word has length 85 [2023-12-25 23:07:18,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:07:18,966 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 430 transitions. [2023-12-25 23:07:18,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:18,966 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 430 transitions. [2023-12-25 23:07:18,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-25 23:07:18,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:07:18,969 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:07:18,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-25 23:07:18,969 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:07:18,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:07:18,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1440867065, now seen corresponding path program 1 times [2023-12-25 23:07:18,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:07:18,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823856215] [2023-12-25 23:07:18,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:07:18,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:07:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:07:19,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:07:19,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:07:19,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823856215] [2023-12-25 23:07:19,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823856215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:07:19,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:07:19,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 23:07:19,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405719065] [2023-12-25 23:07:19,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:07:19,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 23:07:19,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:07:19,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 23:07:19,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:07:19,733 INFO L87 Difference]: Start difference. First operand 262 states and 430 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:20,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:07:20,075 INFO L93 Difference]: Finished difference Result 771 states and 1259 transitions. [2023-12-25 23:07:20,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 23:07:20,076 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-12-25 23:07:20,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:07:20,079 INFO L225 Difference]: With dead ends: 771 [2023-12-25 23:07:20,079 INFO L226 Difference]: Without dead ends: 603 [2023-12-25 23:07:20,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2023-12-25 23:07:20,080 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 2661 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2661 SdHoareTripleChecker+Valid, 2534 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 23:07:20,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2661 Valid, 2534 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 23:07:20,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2023-12-25 23:07:20,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 283. [2023-12-25 23:07:20,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 1.6382978723404256) internal successors, (462), 282 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:20,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 462 transitions. [2023-12-25 23:07:20,110 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 462 transitions. Word has length 86 [2023-12-25 23:07:20,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:07:20,110 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 462 transitions. [2023-12-25 23:07:20,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:20,110 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 462 transitions. [2023-12-25 23:07:20,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-25 23:07:20,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:07:20,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:07:20,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-25 23:07:20,113 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:07:20,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:07:20,113 INFO L85 PathProgramCache]: Analyzing trace with hash -117298803, now seen corresponding path program 1 times [2023-12-25 23:07:20,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:07:20,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058008169] [2023-12-25 23:07:20,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:07:20,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:07:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:07:20,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:07:20,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:07:20,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058008169] [2023-12-25 23:07:20,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058008169] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:07:20,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:07:20,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 23:07:20,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278085257] [2023-12-25 23:07:20,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:07:20,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 23:07:20,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:07:20,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 23:07:20,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:07:20,457 INFO L87 Difference]: Start difference. First operand 283 states and 462 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:20,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:07:20,768 INFO L93 Difference]: Finished difference Result 781 states and 1275 transitions. [2023-12-25 23:07:20,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 23:07:20,769 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2023-12-25 23:07:20,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:07:20,772 INFO L225 Difference]: With dead ends: 781 [2023-12-25 23:07:20,772 INFO L226 Difference]: Without dead ends: 613 [2023-12-25 23:07:20,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2023-12-25 23:07:20,781 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 2696 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2696 SdHoareTripleChecker+Valid, 2549 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 23:07:20,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2696 Valid, 2549 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 23:07:20,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2023-12-25 23:07:20,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 288. [2023-12-25 23:07:20,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 1.6341463414634145) internal successors, (469), 287 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:20,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 469 transitions. [2023-12-25 23:07:20,790 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 469 transitions. Word has length 87 [2023-12-25 23:07:20,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:07:20,790 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 469 transitions. [2023-12-25 23:07:20,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:20,791 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 469 transitions. [2023-12-25 23:07:20,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-25 23:07:20,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:07:20,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:07:20,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-25 23:07:20,792 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:07:20,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:07:20,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1777488031, now seen corresponding path program 1 times [2023-12-25 23:07:20,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:07:20,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523612817] [2023-12-25 23:07:20,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:07:20,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:07:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:07:21,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:07:21,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:07:21,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523612817] [2023-12-25 23:07:21,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523612817] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:07:21,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:07:21,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:07:21,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160885695] [2023-12-25 23:07:21,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:07:21,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:07:21,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:07:21,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:07:21,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:07:21,009 INFO L87 Difference]: Start difference. First operand 288 states and 469 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:21,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:07:21,240 INFO L93 Difference]: Finished difference Result 787 states and 1276 transitions. [2023-12-25 23:07:21,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 23:07:21,241 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-25 23:07:21,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:07:21,243 INFO L225 Difference]: With dead ends: 787 [2023-12-25 23:07:21,243 INFO L226 Difference]: Without dead ends: 608 [2023-12-25 23:07:21,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-12-25 23:07:21,244 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 2176 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2176 SdHoareTripleChecker+Valid, 2102 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:07:21,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2176 Valid, 2102 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:07:21,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2023-12-25 23:07:21,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 290. [2023-12-25 23:07:21,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.6262975778546713) internal successors, (470), 289 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:21,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 470 transitions. [2023-12-25 23:07:21,254 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 470 transitions. Word has length 88 [2023-12-25 23:07:21,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:07:21,254 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 470 transitions. [2023-12-25 23:07:21,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:21,255 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 470 transitions. [2023-12-25 23:07:21,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-25 23:07:21,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:07:21,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:07:21,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-25 23:07:21,260 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:07:21,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:07:21,261 INFO L85 PathProgramCache]: Analyzing trace with hash -575936655, now seen corresponding path program 1 times [2023-12-25 23:07:21,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:07:21,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792337608] [2023-12-25 23:07:21,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:07:21,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:07:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:07:21,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:07:21,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:07:21,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792337608] [2023-12-25 23:07:21,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792337608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:07:21,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:07:21,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:07:21,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649302675] [2023-12-25 23:07:21,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:07:21,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:07:21,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:07:21,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:07:21,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:07:21,575 INFO L87 Difference]: Start difference. First operand 290 states and 470 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:21,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:07:21,769 INFO L93 Difference]: Finished difference Result 790 states and 1275 transitions. [2023-12-25 23:07:21,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 23:07:21,770 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-12-25 23:07:21,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:07:21,773 INFO L225 Difference]: With dead ends: 790 [2023-12-25 23:07:21,773 INFO L226 Difference]: Without dead ends: 606 [2023-12-25 23:07:21,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-12-25 23:07:21,775 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 2163 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2163 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:07:21,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2163 Valid, 2099 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:07:21,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2023-12-25 23:07:21,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 292. [2023-12-25 23:07:21,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 1.6185567010309279) internal successors, (471), 291 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:21,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 471 transitions. [2023-12-25 23:07:21,786 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 471 transitions. Word has length 89 [2023-12-25 23:07:21,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:07:21,789 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 471 transitions. [2023-12-25 23:07:21,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:21,794 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 471 transitions. [2023-12-25 23:07:21,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-25 23:07:21,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:07:21,800 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:07:21,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-25 23:07:21,801 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:07:21,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:07:21,801 INFO L85 PathProgramCache]: Analyzing trace with hash 261394425, now seen corresponding path program 1 times [2023-12-25 23:07:21,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:07:21,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152873575] [2023-12-25 23:07:21,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:07:21,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:07:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:07:22,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:07:22,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:07:22,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152873575] [2023-12-25 23:07:22,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152873575] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:07:22,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:07:22,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:07:22,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899952132] [2023-12-25 23:07:22,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:07:22,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:07:22,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:07:22,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:07:22,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:07:22,032 INFO L87 Difference]: Start difference. First operand 292 states and 471 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:22,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:07:22,238 INFO L93 Difference]: Finished difference Result 793 states and 1274 transitions. [2023-12-25 23:07:22,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 23:07:22,239 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2023-12-25 23:07:22,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:07:22,242 INFO L225 Difference]: With dead ends: 793 [2023-12-25 23:07:22,242 INFO L226 Difference]: Without dead ends: 604 [2023-12-25 23:07:22,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-12-25 23:07:22,244 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 2150 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2150 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:07:22,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2150 Valid, 2080 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:07:22,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2023-12-25 23:07:22,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 294. [2023-12-25 23:07:22,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 1.6109215017064846) internal successors, (472), 293 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:22,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 472 transitions. [2023-12-25 23:07:22,254 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 472 transitions. Word has length 90 [2023-12-25 23:07:22,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:07:22,254 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 472 transitions. [2023-12-25 23:07:22,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:22,254 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 472 transitions. [2023-12-25 23:07:22,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-25 23:07:22,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:07:22,255 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:07:22,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-25 23:07:22,255 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:07:22,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:07:22,256 INFO L85 PathProgramCache]: Analyzing trace with hash -806927081, now seen corresponding path program 1 times [2023-12-25 23:07:22,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:07:22,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561037958] [2023-12-25 23:07:22,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:07:22,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:07:22,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:07:22,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:07:22,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:07:22,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561037958] [2023-12-25 23:07:22,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561037958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:07:22,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:07:22,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:07:22,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374672196] [2023-12-25 23:07:22,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:07:22,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:07:22,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:07:22,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:07:22,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:07:22,529 INFO L87 Difference]: Start difference. First operand 294 states and 472 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 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) [2023-12-25 23:07:22,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:07:22,738 INFO L93 Difference]: Finished difference Result 796 states and 1273 transitions. [2023-12-25 23:07:22,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 23:07:22,739 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 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 91 [2023-12-25 23:07:22,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:07:22,741 INFO L225 Difference]: With dead ends: 796 [2023-12-25 23:07:22,741 INFO L226 Difference]: Without dead ends: 602 [2023-12-25 23:07:22,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-12-25 23:07:22,742 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 2137 mSDsluCounter, 1650 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2137 SdHoareTripleChecker+Valid, 2069 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:07:22,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2137 Valid, 2069 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:07:22,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2023-12-25 23:07:22,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 296. [2023-12-25 23:07:22,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 1.6033898305084746) internal successors, (473), 295 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:22,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 473 transitions. [2023-12-25 23:07:22,750 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 473 transitions. Word has length 91 [2023-12-25 23:07:22,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:07:22,751 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 473 transitions. [2023-12-25 23:07:22,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 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) [2023-12-25 23:07:22,751 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 473 transitions. [2023-12-25 23:07:22,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-25 23:07:22,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:07:22,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:07:22,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-25 23:07:22,752 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:07:22,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:07:22,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1378034349, now seen corresponding path program 1 times [2023-12-25 23:07:22,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:07:22,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221486382] [2023-12-25 23:07:22,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:07:22,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:07:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:07:22,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:07:22,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:07:22,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221486382] [2023-12-25 23:07:22,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221486382] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:07:22,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:07:22,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:07:22,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22985467] [2023-12-25 23:07:22,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:07:22,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:07:22,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:07:22,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:07:22,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:07:22,936 INFO L87 Difference]: Start difference. First operand 296 states and 473 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:23,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:07:23,036 INFO L93 Difference]: Finished difference Result 616 states and 989 transitions. [2023-12-25 23:07:23,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:07:23,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-25 23:07:23,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:07:23,039 INFO L225 Difference]: With dead ends: 616 [2023-12-25 23:07:23,039 INFO L226 Difference]: Without dead ends: 421 [2023-12-25 23:07:23,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:07:23,040 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 1101 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:07:23,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1101 Valid, 1242 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:07:23,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2023-12-25 23:07:23,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 280. [2023-12-25 23:07:23,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 1.6129032258064515) internal successors, (450), 279 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:23,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 450 transitions. [2023-12-25 23:07:23,047 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 450 transitions. Word has length 92 [2023-12-25 23:07:23,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:07:23,048 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 450 transitions. [2023-12-25 23:07:23,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:23,048 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 450 transitions. [2023-12-25 23:07:23,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-25 23:07:23,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:07:23,049 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:07:23,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-25 23:07:23,050 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:07:23,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:07:23,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1264062484, now seen corresponding path program 1 times [2023-12-25 23:07:23,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:07:23,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923565703] [2023-12-25 23:07:23,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:07:23,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:07:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:07:23,776 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:07:23,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:07:23,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923565703] [2023-12-25 23:07:23,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923565703] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:07:23,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641983409] [2023-12-25 23:07:23,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:07:23,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:07:23,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:07:23,783 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) [2023-12-25 23:07:23,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-25 23:07:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:07:24,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 1621 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-25 23:07:24,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:07:24,696 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:07:24,696 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 23:07:24,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641983409] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:07:24,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 23:07:24,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-25 23:07:24,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356375139] [2023-12-25 23:07:24,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:07:24,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 23:07:24,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:07:24,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 23:07:24,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:07:24,699 INFO L87 Difference]: Start difference. First operand 280 states and 450 transitions. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:24,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:07:24,967 INFO L93 Difference]: Finished difference Result 448 states and 724 transitions. [2023-12-25 23:07:24,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 23:07:24,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 196 [2023-12-25 23:07:24,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:07:24,969 INFO L225 Difference]: With dead ends: 448 [2023-12-25 23:07:24,969 INFO L226 Difference]: Without dead ends: 280 [2023-12-25 23:07:24,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:07:24,970 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 306 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 23:07:24,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 511 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 23:07:24,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-12-25 23:07:24,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2023-12-25 23:07:24,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 1.6057347670250897) internal successors, (448), 279 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:24,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 448 transitions. [2023-12-25 23:07:24,977 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 448 transitions. Word has length 196 [2023-12-25 23:07:24,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:07:24,977 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 448 transitions. [2023-12-25 23:07:24,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:24,978 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 448 transitions. [2023-12-25 23:07:24,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-25 23:07:24,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:07:24,980 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:07:25,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-25 23:07:25,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-25 23:07:25,186 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:07:25,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:07:25,187 INFO L85 PathProgramCache]: Analyzing trace with hash -50597174, now seen corresponding path program 1 times [2023-12-25 23:07:25,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:07:25,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975843519] [2023-12-25 23:07:25,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:07:25,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:07:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:07:26,416 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:07:26,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:07:26,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975843519] [2023-12-25 23:07:26,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975843519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:07:26,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:07:26,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 23:07:26,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200821504] [2023-12-25 23:07:26,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:07:26,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 23:07:26,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:07:26,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 23:07:26,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 23:07:26,418 INFO L87 Difference]: Start difference. First operand 280 states and 448 transitions. Second operand has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 5 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:26,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:07:26,722 INFO L93 Difference]: Finished difference Result 592 states and 953 transitions. [2023-12-25 23:07:26,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 23:07:26,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 5 states have internal predecessors, (197), 0 states have call successors, (0), 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 197 [2023-12-25 23:07:26,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:07:26,725 INFO L225 Difference]: With dead ends: 592 [2023-12-25 23:07:26,725 INFO L226 Difference]: Without dead ends: 417 [2023-12-25 23:07:26,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-25 23:07:26,726 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 819 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 23:07:26,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 1473 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 23:07:26,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2023-12-25 23:07:26,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 331. [2023-12-25 23:07:26,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 1.603030303030303) internal successors, (529), 330 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) [2023-12-25 23:07:26,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 529 transitions. [2023-12-25 23:07:26,734 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 529 transitions. Word has length 197 [2023-12-25 23:07:26,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:07:26,734 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 529 transitions. [2023-12-25 23:07:26,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 5 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:26,734 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 529 transitions. [2023-12-25 23:07:26,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-25 23:07:26,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:07:26,736 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:07:26,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-25 23:07:26,736 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:07:26,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:07:26,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1621303522, now seen corresponding path program 1 times [2023-12-25 23:07:26,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:07:26,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370304905] [2023-12-25 23:07:26,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:07:26,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:07:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:07:27,993 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:07:27,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:07:27,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370304905] [2023-12-25 23:07:27,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370304905] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:07:27,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:07:27,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:07:27,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538003949] [2023-12-25 23:07:27,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:07:27,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:07:27,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:07:27,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:07:27,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:07:27,995 INFO L87 Difference]: Start difference. First operand 331 states and 529 transitions. Second operand has 5 states, 5 states have (on average 39.6) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:28,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:07:28,421 INFO L93 Difference]: Finished difference Result 585 states and 942 transitions. [2023-12-25 23:07:28,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 23:07:28,422 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2023-12-25 23:07:28,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:07:28,423 INFO L225 Difference]: With dead ends: 585 [2023-12-25 23:07:28,424 INFO L226 Difference]: Without dead ends: 417 [2023-12-25 23:07:28,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:07:28,425 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 793 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 23:07:28,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 747 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 23:07:28,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2023-12-25 23:07:28,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 332. [2023-12-25 23:07:28,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 1.6012084592145015) internal successors, (530), 331 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) [2023-12-25 23:07:28,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 530 transitions. [2023-12-25 23:07:28,433 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 530 transitions. Word has length 198 [2023-12-25 23:07:28,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:07:28,433 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 530 transitions. [2023-12-25 23:07:28,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:28,433 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 530 transitions. [2023-12-25 23:07:28,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-25 23:07:28,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:07:28,435 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:07:28,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-25 23:07:28,435 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:07:28,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:07:28,435 INFO L85 PathProgramCache]: Analyzing trace with hash -54545572, now seen corresponding path program 1 times [2023-12-25 23:07:28,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:07:28,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243608399] [2023-12-25 23:07:28,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:07:28,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:07:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:07:29,558 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:07:29,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:07:29,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243608399] [2023-12-25 23:07:29,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243608399] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:07:29,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:07:29,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 23:07:29,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974886732] [2023-12-25 23:07:29,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:07:29,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 23:07:29,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:07:29,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 23:07:29,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 23:07:29,561 INFO L87 Difference]: Start difference. First operand 332 states and 530 transitions. Second operand has 6 states, 6 states have (on average 33.0) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:30,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:07:30,005 INFO L93 Difference]: Finished difference Result 646 states and 1027 transitions. [2023-12-25 23:07:30,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:07:30,006 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.0) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2023-12-25 23:07:30,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:07:30,008 INFO L225 Difference]: With dead ends: 646 [2023-12-25 23:07:30,008 INFO L226 Difference]: Without dead ends: 478 [2023-12-25 23:07:30,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 23:07:30,009 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 809 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 23:07:30,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 1418 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 23:07:30,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2023-12-25 23:07:30,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 415. [2023-12-25 23:07:30,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 414 states have (on average 1.606280193236715) internal successors, (665), 414 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:30,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 665 transitions. [2023-12-25 23:07:30,019 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 665 transitions. Word has length 198 [2023-12-25 23:07:30,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:07:30,020 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 665 transitions. [2023-12-25 23:07:30,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.0) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:30,020 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 665 transitions. [2023-12-25 23:07:30,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-25 23:07:30,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:07:30,022 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:07:30,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-25 23:07:30,022 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:07:30,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:07:30,022 INFO L85 PathProgramCache]: Analyzing trace with hash 107226576, now seen corresponding path program 1 times [2023-12-25 23:07:30,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:07:30,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236012939] [2023-12-25 23:07:30,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:07:30,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:07:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:07:31,231 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:07:31,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:07:31,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236012939] [2023-12-25 23:07:31,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236012939] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:07:31,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:07:31,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:07:31,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870483891] [2023-12-25 23:07:31,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:07:31,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:07:31,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:07:31,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:07:31,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:07:31,234 INFO L87 Difference]: Start difference. First operand 415 states and 665 transitions. Second operand has 5 states, 5 states have (on average 39.8) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:31,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:07:31,685 INFO L93 Difference]: Finished difference Result 585 states and 940 transitions. [2023-12-25 23:07:31,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 23:07:31,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 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 199 [2023-12-25 23:07:31,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:07:31,688 INFO L225 Difference]: With dead ends: 585 [2023-12-25 23:07:31,688 INFO L226 Difference]: Without dead ends: 417 [2023-12-25 23:07:31,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:07:31,689 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 731 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 23:07:31,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 740 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 23:07:31,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2023-12-25 23:07:31,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 416. [2023-12-25 23:07:31,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 1.6048192771084338) internal successors, (666), 415 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:31,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 666 transitions. [2023-12-25 23:07:31,699 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 666 transitions. Word has length 199 [2023-12-25 23:07:31,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:07:31,699 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 666 transitions. [2023-12-25 23:07:31,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:31,699 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 666 transitions. [2023-12-25 23:07:31,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-25 23:07:31,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:07:31,701 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:07:31,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-25 23:07:31,701 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:07:31,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:07:31,702 INFO L85 PathProgramCache]: Analyzing trace with hash 247775186, now seen corresponding path program 1 times [2023-12-25 23:07:31,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:07:31,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764154790] [2023-12-25 23:07:31,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:07:31,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:07:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:07:35,155 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:07:35,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:07:35,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764154790] [2023-12-25 23:07:35,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764154790] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:07:35,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917353868] [2023-12-25 23:07:35,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:07:35,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:07:35,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:07:35,157 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) [2023-12-25 23:07:35,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-25 23:07:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:07:35,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 1632 conjuncts, 71 conjunts are in the unsatisfiable core [2023-12-25 23:07:35,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:07:36,428 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:07:36,428 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 23:07:36,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917353868] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:07:36,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 23:07:36,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 20 [2023-12-25 23:07:36,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332838245] [2023-12-25 23:07:36,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:07:36,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 23:07:36,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:07:36,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 23:07:36,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2023-12-25 23:07:36,430 INFO L87 Difference]: Start difference. First operand 416 states and 666 transitions. Second operand has 10 states, 10 states have (on average 19.9) internal successors, (199), 9 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:37,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:07:37,254 INFO L93 Difference]: Finished difference Result 902 states and 1436 transitions. [2023-12-25 23:07:37,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 23:07:37,255 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 19.9) internal successors, (199), 9 states have internal predecessors, (199), 0 states have call successors, (0), 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 199 [2023-12-25 23:07:37,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:07:37,257 INFO L225 Difference]: With dead ends: 902 [2023-12-25 23:07:37,257 INFO L226 Difference]: Without dead ends: 617 [2023-12-25 23:07:37,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2023-12-25 23:07:37,259 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 1545 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 23:07:37,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1545 Valid, 1819 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 23:07:37,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2023-12-25 23:07:37,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 416. [2023-12-25 23:07:37,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 1.6) internal successors, (664), 415 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:37,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 664 transitions. [2023-12-25 23:07:37,269 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 664 transitions. Word has length 199 [2023-12-25 23:07:37,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:07:37,269 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 664 transitions. [2023-12-25 23:07:37,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.9) internal successors, (199), 9 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:37,269 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 664 transitions. [2023-12-25 23:07:37,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-25 23:07:37,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:07:37,271 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:07:37,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-25 23:07:37,481 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,SelfDestructingSolverStorable14 [2023-12-25 23:07:37,482 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:07:37,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:07:37,483 INFO L85 PathProgramCache]: Analyzing trace with hash -324453882, now seen corresponding path program 1 times [2023-12-25 23:07:37,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:07:37,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264479373] [2023-12-25 23:07:37,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:07:37,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:07:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:07:40,658 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:07:40,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:07:40,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264479373] [2023-12-25 23:07:40,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264479373] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:07:40,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:07:40,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-25 23:07:40,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278064504] [2023-12-25 23:07:40,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:07:40,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 23:07:40,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:07:40,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 23:07:40,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-25 23:07:40,660 INFO L87 Difference]: Start difference. First operand 416 states and 664 transitions. Second operand has 12 states, 12 states have (on average 16.666666666666668) internal successors, (200), 11 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:41,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:07:41,067 INFO L93 Difference]: Finished difference Result 1228 states and 1966 transitions. [2023-12-25 23:07:41,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 23:07:41,069 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 16.666666666666668) internal successors, (200), 11 states have internal predecessors, (200), 0 states have call successors, (0), 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 200 [2023-12-25 23:07:41,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:07:41,074 INFO L225 Difference]: With dead ends: 1228 [2023-12-25 23:07:41,074 INFO L226 Difference]: Without dead ends: 997 [2023-12-25 23:07:41,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2023-12-25 23:07:41,075 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 1676 mSDsluCounter, 2754 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1676 SdHoareTripleChecker+Valid, 3149 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 23:07:41,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1676 Valid, 3149 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 23:07:41,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2023-12-25 23:07:41,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 605. [2023-12-25 23:07:41,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 604 states have (on average 1.5728476821192052) internal successors, (950), 604 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:41,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 950 transitions. [2023-12-25 23:07:41,097 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 950 transitions. Word has length 200 [2023-12-25 23:07:41,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:07:41,097 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 950 transitions. [2023-12-25 23:07:41,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.666666666666668) internal successors, (200), 11 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:41,098 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 950 transitions. [2023-12-25 23:07:41,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-12-25 23:07:41,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:07:41,099 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:07:41,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-25 23:07:41,100 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:07:41,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:07:41,100 INFO L85 PathProgramCache]: Analyzing trace with hash 2107320392, now seen corresponding path program 1 times [2023-12-25 23:07:41,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:07:41,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631900541] [2023-12-25 23:07:41,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:07:41,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:07:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:07:41,668 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:07:41,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:07:41,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631900541] [2023-12-25 23:07:41,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631900541] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:07:41,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:07:41,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 23:07:41,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536938704] [2023-12-25 23:07:41,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:07:41,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 23:07:41,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:07:41,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 23:07:41,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:07:41,670 INFO L87 Difference]: Start difference. First operand 605 states and 950 transitions. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:41,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:07:41,690 INFO L93 Difference]: Finished difference Result 934 states and 1481 transitions. [2023-12-25 23:07:41,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 23:07:41,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 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 201 [2023-12-25 23:07:41,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:07:41,692 INFO L225 Difference]: With dead ends: 934 [2023-12-25 23:07:41,692 INFO L226 Difference]: Without dead ends: 601 [2023-12-25 23:07:41,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:07:41,693 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 554 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:07:41,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 829 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:07:41,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2023-12-25 23:07:41,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2023-12-25 23:07:41,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 600 states have (on average 1.5666666666666667) internal successors, (940), 600 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:41,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 940 transitions. [2023-12-25 23:07:41,705 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 940 transitions. Word has length 201 [2023-12-25 23:07:41,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:07:41,706 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 940 transitions. [2023-12-25 23:07:41,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:07:41,706 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 940 transitions. [2023-12-25 23:07:41,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-12-25 23:07:41,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:07:41,708 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:07:41,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-25 23:07:41,708 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:07:41,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:07:41,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1785007650, now seen corresponding path program 1 times [2023-12-25 23:07:41,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:07:41,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289767922] [2023-12-25 23:07:41,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:07:41,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:07:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:07:45,395 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:07:45,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:07:45,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289767922] [2023-12-25 23:07:45,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289767922] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:07:45,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792806164] [2023-12-25 23:07:45,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:07:45,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:07:45,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:07:45,401 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) [2023-12-25 23:07:45,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-25 23:07:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:07:45,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 89 conjunts are in the unsatisfiable core [2023-12-25 23:07:45,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:07:47,653 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:07:47,653 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:07:49,528 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:07:49,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792806164] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:07:49,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:07:49,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 24, 20] total 56 [2023-12-25 23:07:49,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722619358] [2023-12-25 23:07:49,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:07:49,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-25 23:07:49,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:07:49,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-25 23:07:49,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=2913, Unknown=0, NotChecked=0, Total=3192 [2023-12-25 23:07:49,532 INFO L87 Difference]: Start difference. First operand 601 states and 940 transitions. Second operand has 57 states, 57 states have (on average 10.368421052631579) internal successors, (591), 56 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:09:38,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:09:38,403 INFO L93 Difference]: Finished difference Result 34498 states and 55252 transitions. [2023-12-25 23:09:38,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1080 states. [2023-12-25 23:09:38,404 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 10.368421052631579) internal successors, (591), 56 states have internal predecessors, (591), 0 states have call successors, (0), 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 201 [2023-12-25 23:09:38,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:09:38,496 INFO L225 Difference]: With dead ends: 34498 [2023-12-25 23:09:38,496 INFO L226 Difference]: Without dead ends: 34193 [2023-12-25 23:09:38,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1491 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 1132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651237 ImplicationChecksByTransitivity, 88.1s TimeCoverageRelationStatistics Valid=142366, Invalid=1142456, Unknown=0, NotChecked=0, Total=1284822 [2023-12-25 23:09:38,630 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 126466 mSDsluCounter, 26740 mSDsCounter, 0 mSdLazyCounter, 14084 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126466 SdHoareTripleChecker+Valid, 27280 SdHoareTripleChecker+Invalid, 14510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 14084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2023-12-25 23:09:38,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126466 Valid, 27280 Invalid, 14510 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [426 Valid, 14084 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2023-12-25 23:09:38,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34193 states. [2023-12-25 23:09:38,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34193 to 1057. [2023-12-25 23:09:38,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 1056 states have (on average 1.5681818181818181) internal successors, (1656), 1056 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:09:38,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1656 transitions. [2023-12-25 23:09:38,907 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1656 transitions. Word has length 201 [2023-12-25 23:09:38,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:09:38,907 INFO L495 AbstractCegarLoop]: Abstraction has 1057 states and 1656 transitions. [2023-12-25 23:09:38,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 10.368421052631579) internal successors, (591), 56 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:09:38,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1656 transitions. [2023-12-25 23:09:38,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-25 23:09:38,910 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:09:38,910 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:09:38,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-25 23:09:39,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-25 23:09:39,121 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:09:39,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:09:39,121 INFO L85 PathProgramCache]: Analyzing trace with hash -276120702, now seen corresponding path program 1 times [2023-12-25 23:09:39,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:09:39,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977411995] [2023-12-25 23:09:39,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:09:39,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:09:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:09:40,513 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:09:40,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:09:40,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977411995] [2023-12-25 23:09:40,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977411995] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:09:40,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:09:40,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:09:40,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245858639] [2023-12-25 23:09:40,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:09:40,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:09:40,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:09:40,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:09:40,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:09:40,518 INFO L87 Difference]: Start difference. First operand 1057 states and 1656 transitions. Second operand has 7 states, 7 states have (on average 28.857142857142858) internal successors, (202), 6 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:09:40,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:09:40,717 INFO L93 Difference]: Finished difference Result 1807 states and 2839 transitions. [2023-12-25 23:09:40,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 23:09:40,718 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 28.857142857142858) internal successors, (202), 6 states have internal predecessors, (202), 0 states have call successors, (0), 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 202 [2023-12-25 23:09:40,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:09:40,724 INFO L225 Difference]: With dead ends: 1807 [2023-12-25 23:09:40,725 INFO L226 Difference]: Without dead ends: 1437 [2023-12-25 23:09:40,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-25 23:09:40,726 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 551 mSDsluCounter, 2070 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 2716 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:09:40,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 2716 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:09:40,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2023-12-25 23:09:40,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1297. [2023-12-25 23:09:40,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1297 states, 1296 states have (on average 1.5617283950617284) internal successors, (2024), 1296 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:09:40,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 2024 transitions. [2023-12-25 23:09:40,757 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 2024 transitions. Word has length 202 [2023-12-25 23:09:40,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:09:40,757 INFO L495 AbstractCegarLoop]: Abstraction has 1297 states and 2024 transitions. [2023-12-25 23:09:40,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.857142857142858) internal successors, (202), 6 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:09:40,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 2024 transitions. [2023-12-25 23:09:40,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-25 23:09:40,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:09:40,760 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:09:40,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-25 23:09:40,760 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:09:40,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:09:40,760 INFO L85 PathProgramCache]: Analyzing trace with hash -206472828, now seen corresponding path program 1 times [2023-12-25 23:09:40,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:09:40,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497466595] [2023-12-25 23:09:40,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:09:40,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:09:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:09:43,523 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:09:43,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:09:43,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497466595] [2023-12-25 23:09:43,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497466595] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:09:43,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:09:43,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-25 23:09:43,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526866773] [2023-12-25 23:09:43,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:09:43,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 23:09:43,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:09:43,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 23:09:43,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-25 23:09:43,526 INFO L87 Difference]: Start difference. First operand 1297 states and 2024 transitions. Second operand has 10 states, 10 states have (on average 20.2) internal successors, (202), 9 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:09:43,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:09:43,734 INFO L93 Difference]: Finished difference Result 2882 states and 4533 transitions. [2023-12-25 23:09:43,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 23:09:43,735 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.2) internal successors, (202), 9 states have internal predecessors, (202), 0 states have call successors, (0), 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 202 [2023-12-25 23:09:43,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:09:43,738 INFO L225 Difference]: With dead ends: 2882 [2023-12-25 23:09:43,739 INFO L226 Difference]: Without dead ends: 2396 [2023-12-25 23:09:43,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-12-25 23:09:43,740 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 2037 mSDsluCounter, 2029 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2037 SdHoareTripleChecker+Valid, 2478 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:09:43,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2037 Valid, 2478 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:09:43,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2396 states. [2023-12-25 23:09:43,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2396 to 1184. [2023-12-25 23:09:43,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 1183 states have (on average 1.558748943364328) internal successors, (1844), 1183 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:09:43,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1844 transitions. [2023-12-25 23:09:43,770 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1844 transitions. Word has length 202 [2023-12-25 23:09:43,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:09:43,770 INFO L495 AbstractCegarLoop]: Abstraction has 1184 states and 1844 transitions. [2023-12-25 23:09:43,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.2) internal successors, (202), 9 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:09:43,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1844 transitions. [2023-12-25 23:09:43,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-25 23:09:43,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:09:43,773 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:09:43,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-25 23:09:43,773 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:09:43,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:09:43,774 INFO L85 PathProgramCache]: Analyzing trace with hash 876701434, now seen corresponding path program 1 times [2023-12-25 23:09:43,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:09:43,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24645828] [2023-12-25 23:09:43,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:09:43,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:09:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:09:45,694 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:09:45,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:09:45,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24645828] [2023-12-25 23:09:45,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24645828] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:09:45,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695857746] [2023-12-25 23:09:45,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:09:45,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:09:45,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:09:45,696 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) [2023-12-25 23:09:45,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-25 23:09:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:09:46,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 1646 conjuncts, 89 conjunts are in the unsatisfiable core [2023-12-25 23:09:46,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:09:47,442 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:09:47,442 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:09:48,459 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 23:09:48,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695857746] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:09:48,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:09:48,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 26, 19] total 46 [2023-12-25 23:09:48,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025101673] [2023-12-25 23:09:48,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:09:48,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-25 23:09:48,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:09:48,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-25 23:09:48,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=1905, Unknown=0, NotChecked=0, Total=2162 [2023-12-25 23:09:48,462 INFO L87 Difference]: Start difference. First operand 1184 states and 1844 transitions. Second operand has 47 states, 47 states have (on average 10.893617021276595) internal successors, (512), 46 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:09:57,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:09:57,972 INFO L93 Difference]: Finished difference Result 9357 states and 14735 transitions. [2023-12-25 23:09:57,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2023-12-25 23:09:57,973 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 10.893617021276595) internal successors, (512), 46 states have internal predecessors, (512), 0 states have call successors, (0), 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 203 [2023-12-25 23:09:57,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:09:57,984 INFO L225 Difference]: With dead ends: 9357 [2023-12-25 23:09:57,984 INFO L226 Difference]: Without dead ends: 8730 [2023-12-25 23:09:57,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 360 SyntacticMatches, 12 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18413 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=8516, Invalid=37924, Unknown=0, NotChecked=0, Total=46440 [2023-12-25 23:09:57,990 INFO L413 NwaCegarLoop]: 1390 mSDtfsCounter, 34122 mSDsluCounter, 26319 mSDsCounter, 0 mSdLazyCounter, 4285 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34122 SdHoareTripleChecker+Valid, 27709 SdHoareTripleChecker+Invalid, 4427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 4285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:09:57,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34122 Valid, 27709 Invalid, 4427 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [142 Valid, 4285 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-25 23:09:57,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8730 states. [2023-12-25 23:09:58,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8730 to 1604. [2023-12-25 23:09:58,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1604 states, 1603 states have (on average 1.5502183406113537) internal successors, (2485), 1603 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:09:58,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2485 transitions. [2023-12-25 23:09:58,048 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2485 transitions. Word has length 203 [2023-12-25 23:09:58,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:09:58,048 INFO L495 AbstractCegarLoop]: Abstraction has 1604 states and 2485 transitions. [2023-12-25 23:09:58,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 10.893617021276595) internal successors, (512), 46 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:09:58,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2485 transitions. [2023-12-25 23:09:58,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-25 23:09:58,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:09:58,051 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:09:58,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-25 23:09:58,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:09:58,261 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:09:58,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:09:58,261 INFO L85 PathProgramCache]: Analyzing trace with hash 899074168, now seen corresponding path program 1 times [2023-12-25 23:09:58,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:09:58,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638772410] [2023-12-25 23:09:58,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:09:58,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:09:58,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:10:00,196 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:10:00,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:10:00,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638772410] [2023-12-25 23:10:00,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638772410] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:10:00,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:10:00,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:10:00,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513406729] [2023-12-25 23:10:00,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:10:00,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:10:00,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:10:00,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:10:00,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:10:00,200 INFO L87 Difference]: Start difference. First operand 1604 states and 2485 transitions. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:10:00,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:10:00,254 INFO L93 Difference]: Finished difference Result 2827 states and 4394 transitions. [2023-12-25 23:10:00,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 23:10:00,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 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 203 [2023-12-25 23:10:00,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:10:00,257 INFO L225 Difference]: With dead ends: 2827 [2023-12-25 23:10:00,257 INFO L226 Difference]: Without dead ends: 1631 [2023-12-25 23:10:00,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 23:10:00,260 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 297 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:10:00,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1241 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:10:00,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2023-12-25 23:10:00,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1620. [2023-12-25 23:10:00,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1620 states, 1619 states have (on average 1.544780728844966) internal successors, (2501), 1619 states have internal predecessors, (2501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:10:00,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 2501 transitions. [2023-12-25 23:10:00,295 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 2501 transitions. Word has length 203 [2023-12-25 23:10:00,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:10:00,295 INFO L495 AbstractCegarLoop]: Abstraction has 1620 states and 2501 transitions. [2023-12-25 23:10:00,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:10:00,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 2501 transitions. [2023-12-25 23:10:00,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-25 23:10:00,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:10:00,297 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:10:00,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-25 23:10:00,297 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:10:00,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:10:00,298 INFO L85 PathProgramCache]: Analyzing trace with hash 772857644, now seen corresponding path program 1 times [2023-12-25 23:10:00,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:10:00,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413972682] [2023-12-25 23:10:00,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:10:00,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:10:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:10:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:10:03,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:10:03,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413972682] [2023-12-25 23:10:03,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413972682] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:10:03,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:10:03,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-25 23:10:03,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986712996] [2023-12-25 23:10:03,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:10:03,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 23:10:03,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:10:03,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 23:10:03,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-25 23:10:03,076 INFO L87 Difference]: Start difference. First operand 1620 states and 2501 transitions. Second operand has 12 states, 12 states have (on average 16.916666666666668) internal successors, (203), 11 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:10:03,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:10:03,507 INFO L93 Difference]: Finished difference Result 3813 states and 5959 transitions. [2023-12-25 23:10:03,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 23:10:03,508 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 16.916666666666668) internal successors, (203), 11 states have internal predecessors, (203), 0 states have call successors, (0), 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 203 [2023-12-25 23:10:03,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:10:03,512 INFO L225 Difference]: With dead ends: 3813 [2023-12-25 23:10:03,512 INFO L226 Difference]: Without dead ends: 2624 [2023-12-25 23:10:03,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2023-12-25 23:10:03,514 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 1249 mSDsluCounter, 3316 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 3803 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 23:10:03,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 3803 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 23:10:03,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2023-12-25 23:10:03,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 1795. [2023-12-25 23:10:03,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1794 states have (on average 1.548494983277592) internal successors, (2778), 1794 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:10:03,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 2778 transitions. [2023-12-25 23:10:03,556 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 2778 transitions. Word has length 203 [2023-12-25 23:10:03,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:10:03,556 INFO L495 AbstractCegarLoop]: Abstraction has 1795 states and 2778 transitions. [2023-12-25 23:10:03,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.916666666666668) internal successors, (203), 11 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:10:03,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 2778 transitions. [2023-12-25 23:10:03,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-25 23:10:03,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:10:03,558 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:10:03,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-25 23:10:03,558 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:10:03,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:10:03,559 INFO L85 PathProgramCache]: Analyzing trace with hash -194493010, now seen corresponding path program 1 times [2023-12-25 23:10:03,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:10:03,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36874743] [2023-12-25 23:10:03,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:10:03,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:10:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:10:06,541 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:10:06,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:10:06,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36874743] [2023-12-25 23:10:06,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36874743] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:10:06,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504293338] [2023-12-25 23:10:06,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:10:06,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:10:06,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:10:06,543 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) [2023-12-25 23:10:06,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-25 23:10:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:10:07,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 1647 conjuncts, 149 conjunts are in the unsatisfiable core [2023-12-25 23:10:07,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:10:09,334 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:10:09,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:10:11,231 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:10:11,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504293338] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:10:11,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:10:11,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 28, 22] total 62 [2023-12-25 23:10:11,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62489133] [2023-12-25 23:10:11,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:10:11,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-25 23:10:11,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:10:11,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-25 23:10:11,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=3557, Unknown=0, NotChecked=0, Total=3906 [2023-12-25 23:10:11,237 INFO L87 Difference]: Start difference. First operand 1795 states and 2778 transitions. Second operand has 63 states, 63 states have (on average 9.507936507936508) internal successors, (599), 62 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:10:32,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:10:32,776 INFO L93 Difference]: Finished difference Result 14789 states and 23254 transitions. [2023-12-25 23:10:32,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 234 states. [2023-12-25 23:10:32,777 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 9.507936507936508) internal successors, (599), 62 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2023-12-25 23:10:32,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:10:32,794 INFO L225 Difference]: With dead ends: 14789 [2023-12-25 23:10:32,794 INFO L226 Difference]: Without dead ends: 14267 [2023-12-25 23:10:32,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 358 SyntacticMatches, 1 SemanticMatches, 292 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34803 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=11444, Invalid=74698, Unknown=0, NotChecked=0, Total=86142 [2023-12-25 23:10:32,806 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 21241 mSDsluCounter, 19335 mSDsCounter, 0 mSdLazyCounter, 10094 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21241 SdHoareTripleChecker+Valid, 19861 SdHoareTripleChecker+Invalid, 10166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 10094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-25 23:10:32,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21241 Valid, 19861 Invalid, 10166 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 10094 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-25 23:10:32,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14267 states. [2023-12-25 23:10:32,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14267 to 1960. [2023-12-25 23:10:32,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1960 states, 1959 states have (on average 1.5467075038284839) internal successors, (3030), 1959 states have internal predecessors, (3030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:10:32,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1960 states to 1960 states and 3030 transitions. [2023-12-25 23:10:32,906 INFO L78 Accepts]: Start accepts. Automaton has 1960 states and 3030 transitions. Word has length 203 [2023-12-25 23:10:32,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:10:32,906 INFO L495 AbstractCegarLoop]: Abstraction has 1960 states and 3030 transitions. [2023-12-25 23:10:32,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 9.507936507936508) internal successors, (599), 62 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:10:32,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1960 states and 3030 transitions. [2023-12-25 23:10:32,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-12-25 23:10:32,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:10:32,909 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:10:32,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-25 23:10:33,119 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,SelfDestructingSolverStorable23 [2023-12-25 23:10:33,120 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:10:33,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:10:33,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1381587924, now seen corresponding path program 1 times [2023-12-25 23:10:33,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:10:33,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645246613] [2023-12-25 23:10:33,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:10:33,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:10:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:10:34,088 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:10:34,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:10:34,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645246613] [2023-12-25 23:10:34,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645246613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:10:34,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:10:34,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 23:10:34,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885754101] [2023-12-25 23:10:34,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:10:34,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 23:10:34,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:10:34,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 23:10:34,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:10:34,091 INFO L87 Difference]: Start difference. First operand 1960 states and 3030 transitions. Second operand has 8 states, 8 states have (on average 25.5) internal successors, (204), 8 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:10:34,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:10:34,347 INFO L93 Difference]: Finished difference Result 6403 states and 10004 transitions. [2023-12-25 23:10:34,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-25 23:10:34,347 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 25.5) internal successors, (204), 8 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2023-12-25 23:10:34,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:10:34,354 INFO L225 Difference]: With dead ends: 6403 [2023-12-25 23:10:34,354 INFO L226 Difference]: Without dead ends: 5389 [2023-12-25 23:10:34,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2023-12-25 23:10:34,356 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 2482 mSDsluCounter, 3453 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2482 SdHoareTripleChecker+Valid, 4114 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:10:34,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2482 Valid, 4114 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:10:34,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5389 states. [2023-12-25 23:10:34,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5389 to 2442. [2023-12-25 23:10:34,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2442 states, 2441 states have (on average 1.552232691519869) internal successors, (3789), 2441 states have internal predecessors, (3789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:10:34,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2442 states to 2442 states and 3789 transitions. [2023-12-25 23:10:34,418 INFO L78 Accepts]: Start accepts. Automaton has 2442 states and 3789 transitions. Word has length 204 [2023-12-25 23:10:34,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:10:34,418 INFO L495 AbstractCegarLoop]: Abstraction has 2442 states and 3789 transitions. [2023-12-25 23:10:34,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.5) internal successors, (204), 8 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:10:34,418 INFO L276 IsEmpty]: Start isEmpty. Operand 2442 states and 3789 transitions. [2023-12-25 23:10:34,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-12-25 23:10:34,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:10:34,421 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:10:34,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-25 23:10:34,421 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:10:34,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:10:34,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1316596964, now seen corresponding path program 1 times [2023-12-25 23:10:34,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:10:34,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165785253] [2023-12-25 23:10:34,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:10:34,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:10:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:10:38,767 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:10:38,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:10:38,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165785253] [2023-12-25 23:10:38,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165785253] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:10:38,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976467292] [2023-12-25 23:10:38,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:10:38,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:10:38,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:10:38,769 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) [2023-12-25 23:10:38,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-25 23:10:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:10:39,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 1650 conjuncts, 121 conjunts are in the unsatisfiable core [2023-12-25 23:10:39,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:10:41,169 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:10:41,170 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:10:43,582 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:10:43,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976467292] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:10:43,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:10:43,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 26, 23] total 67 [2023-12-25 23:10:43,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934396906] [2023-12-25 23:10:43,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:10:43,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-12-25 23:10:43,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:10:43,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-12-25 23:10:43,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=411, Invalid=4145, Unknown=0, NotChecked=0, Total=4556 [2023-12-25 23:10:43,585 INFO L87 Difference]: Start difference. First operand 2442 states and 3789 transitions. Second operand has 68 states, 68 states have (on average 8.852941176470589) internal successors, (602), 67 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:11:32,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:11:32,824 INFO L93 Difference]: Finished difference Result 24049 states and 37938 transitions. [2023-12-25 23:11:32,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 502 states. [2023-12-25 23:11:32,824 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 8.852941176470589) internal successors, (602), 67 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2023-12-25 23:11:32,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:11:32,842 INFO L225 Difference]: With dead ends: 24049 [2023-12-25 23:11:32,842 INFO L226 Difference]: Without dead ends: 23220 [2023-12-25 23:11:32,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 931 GetRequests, 364 SyntacticMatches, 1 SemanticMatches, 566 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139414 ImplicationChecksByTransitivity, 38.1s TimeCoverageRelationStatistics Valid=39286, Invalid=282770, Unknown=0, NotChecked=0, Total=322056 [2023-12-25 23:11:32,859 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 54434 mSDsluCounter, 25429 mSDsCounter, 0 mSdLazyCounter, 15339 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54434 SdHoareTripleChecker+Valid, 26043 SdHoareTripleChecker+Invalid, 15585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 15339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-12-25 23:11:32,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54434 Valid, 26043 Invalid, 15585 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [246 Valid, 15339 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-12-25 23:11:32,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23220 states. [2023-12-25 23:11:33,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23220 to 3287. [2023-12-25 23:11:33,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3287 states, 3286 states have (on average 1.5553864881314667) internal successors, (5111), 3286 states have internal predecessors, (5111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:11:33,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3287 states to 3287 states and 5111 transitions. [2023-12-25 23:11:33,053 INFO L78 Accepts]: Start accepts. Automaton has 3287 states and 5111 transitions. Word has length 204 [2023-12-25 23:11:33,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:11:33,053 INFO L495 AbstractCegarLoop]: Abstraction has 3287 states and 5111 transitions. [2023-12-25 23:11:33,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 8.852941176470589) internal successors, (602), 67 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:11:33,054 INFO L276 IsEmpty]: Start isEmpty. Operand 3287 states and 5111 transitions. [2023-12-25 23:11:33,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-12-25 23:11:33,057 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:11:33,057 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:11:33,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-25 23:11:33,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-25 23:11:33,268 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:11:33,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:11:33,268 INFO L85 PathProgramCache]: Analyzing trace with hash 836509854, now seen corresponding path program 1 times [2023-12-25 23:11:33,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:11:33,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655244418] [2023-12-25 23:11:33,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:11:33,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:11:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:11:36,345 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:11:36,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:11:36,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655244418] [2023-12-25 23:11:36,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655244418] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:11:36,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868240005] [2023-12-25 23:11:36,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:11:36,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:11:36,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:11:36,346 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:11:36,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-25 23:11:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:11:36,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-25 23:11:36,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:11:37,876 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:11:37,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:11:39,090 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:11:39,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868240005] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:11:39,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:11:39,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 15] total 45 [2023-12-25 23:11:39,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600875303] [2023-12-25 23:11:39,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:11:39,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-25 23:11:39,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:11:39,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-25 23:11:39,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1822, Unknown=0, NotChecked=0, Total=2070 [2023-12-25 23:11:39,093 INFO L87 Difference]: Start difference. First operand 3287 states and 5111 transitions. Second operand has 46 states, 46 states have (on average 12.608695652173912) internal successors, (580), 45 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:11:44,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:11:44,757 INFO L93 Difference]: Finished difference Result 24027 states and 37865 transitions. [2023-12-25 23:11:44,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-12-25 23:11:44,758 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 12.608695652173912) internal successors, (580), 45 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2023-12-25 23:11:44,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:11:44,777 INFO L225 Difference]: With dead ends: 24027 [2023-12-25 23:11:44,778 INFO L226 Difference]: Without dead ends: 21690 [2023-12-25 23:11:44,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 377 SyntacticMatches, 1 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6481 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=3612, Invalid=15020, Unknown=0, NotChecked=0, Total=18632 [2023-12-25 23:11:44,788 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 17215 mSDsluCounter, 13521 mSDsCounter, 0 mSdLazyCounter, 2439 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17215 SdHoareTripleChecker+Valid, 13999 SdHoareTripleChecker+Invalid, 2458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-25 23:11:44,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17215 Valid, 13999 Invalid, 2458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2439 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-25 23:11:44,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21690 states. [2023-12-25 23:11:44,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21690 to 3610. [2023-12-25 23:11:44,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 3609 states have (on average 1.5500138542532558) internal successors, (5594), 3609 states have internal predecessors, (5594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:11:44,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 5594 transitions. [2023-12-25 23:11:44,961 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 5594 transitions. Word has length 204 [2023-12-25 23:11:44,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:11:44,962 INFO L495 AbstractCegarLoop]: Abstraction has 3610 states and 5594 transitions. [2023-12-25 23:11:44,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 12.608695652173912) internal successors, (580), 45 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:11:44,962 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 5594 transitions. [2023-12-25 23:11:44,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-12-25 23:11:44,965 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:11:44,965 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:11:44,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-25 23:11:45,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:11:45,176 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:11:45,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:11:45,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1929462882, now seen corresponding path program 1 times [2023-12-25 23:11:45,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:11:45,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113193156] [2023-12-25 23:11:45,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:11:45,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:11:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:11:47,198 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:11:47,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:11:47,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113193156] [2023-12-25 23:11:47,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113193156] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:11:47,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:11:47,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-25 23:11:47,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170365932] [2023-12-25 23:11:47,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:11:47,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 23:11:47,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:11:47,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 23:11:47,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 23:11:47,200 INFO L87 Difference]: Start difference. First operand 3610 states and 5594 transitions. Second operand has 10 states, 10 states have (on average 20.4) internal successors, (204), 9 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:11:47,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:11:47,526 INFO L93 Difference]: Finished difference Result 7499 states and 11654 transitions. [2023-12-25 23:11:47,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 23:11:47,526 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.4) internal successors, (204), 9 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2023-12-25 23:11:47,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:11:47,532 INFO L225 Difference]: With dead ends: 7499 [2023-12-25 23:11:47,532 INFO L226 Difference]: Without dead ends: 6559 [2023-12-25 23:11:47,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-12-25 23:11:47,534 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 1530 mSDsluCounter, 2922 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 3538 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:11:47,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1530 Valid, 3538 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:11:47,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6559 states. [2023-12-25 23:11:47,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6559 to 3353. [2023-12-25 23:11:47,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3353 states, 3352 states have (on average 1.5501193317422435) internal successors, (5196), 3352 states have internal predecessors, (5196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:11:47,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 5196 transitions. [2023-12-25 23:11:47,691 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 5196 transitions. Word has length 204 [2023-12-25 23:11:47,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:11:47,691 INFO L495 AbstractCegarLoop]: Abstraction has 3353 states and 5196 transitions. [2023-12-25 23:11:47,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.4) internal successors, (204), 9 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:11:47,692 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 5196 transitions. [2023-12-25 23:11:47,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-12-25 23:11:47,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:11:47,694 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:11:47,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-25 23:11:47,695 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:11:47,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:11:47,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1852562084, now seen corresponding path program 1 times [2023-12-25 23:11:47,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:11:47,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307887676] [2023-12-25 23:11:47,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:11:47,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:11:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:11:49,398 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:11:49,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:11:49,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307887676] [2023-12-25 23:11:49,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307887676] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:11:49,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092506140] [2023-12-25 23:11:49,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:11:49,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:11:49,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:11:49,400 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:11:49,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-25 23:11:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:11:50,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 131 conjunts are in the unsatisfiable core [2023-12-25 23:11:50,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:11:52,514 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:11:52,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:11:55,917 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:11:55,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092506140] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:11:55,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:11:55,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 27, 26] total 61 [2023-12-25 23:11:55,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748043754] [2023-12-25 23:11:55,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:11:55,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-25 23:11:55,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:11:55,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-25 23:11:55,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=3340, Unknown=0, NotChecked=0, Total=3782 [2023-12-25 23:11:55,920 INFO L87 Difference]: Start difference. First operand 3353 states and 5196 transitions. Second operand has 62 states, 62 states have (on average 9.612903225806452) internal successors, (596), 61 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) [2023-12-25 23:12:17,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:12:17,080 INFO L93 Difference]: Finished difference Result 19743 states and 30707 transitions. [2023-12-25 23:12:17,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2023-12-25 23:12:17,080 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 9.612903225806452) internal successors, (596), 61 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 204 [2023-12-25 23:12:17,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:12:17,094 INFO L225 Difference]: With dead ends: 19743 [2023-12-25 23:12:17,094 INFO L226 Difference]: Without dead ends: 19090 [2023-12-25 23:12:17,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31933 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=15845, Invalid=67965, Unknown=0, NotChecked=0, Total=83810 [2023-12-25 23:12:17,102 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 29474 mSDsluCounter, 16135 mSDsCounter, 0 mSdLazyCounter, 11622 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29474 SdHoareTripleChecker+Valid, 16452 SdHoareTripleChecker+Invalid, 11776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 11622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-12-25 23:12:17,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29474 Valid, 16452 Invalid, 11776 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [154 Valid, 11622 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-12-25 23:12:17,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19090 states. [2023-12-25 23:12:17,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19090 to 5003. [2023-12-25 23:12:17,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5003 states, 5002 states have (on average 1.548780487804878) internal successors, (7747), 5002 states have internal predecessors, (7747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:12:17,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5003 states to 5003 states and 7747 transitions. [2023-12-25 23:12:17,333 INFO L78 Accepts]: Start accepts. Automaton has 5003 states and 7747 transitions. Word has length 204 [2023-12-25 23:12:17,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:12:17,333 INFO L495 AbstractCegarLoop]: Abstraction has 5003 states and 7747 transitions. [2023-12-25 23:12:17,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 9.612903225806452) internal successors, (596), 61 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) [2023-12-25 23:12:17,334 INFO L276 IsEmpty]: Start isEmpty. Operand 5003 states and 7747 transitions. [2023-12-25 23:12:17,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-12-25 23:12:17,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:12:17,338 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:12:17,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-25 23:12:17,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-25 23:12:17,552 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:12:17,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:12:17,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1061009518, now seen corresponding path program 1 times [2023-12-25 23:12:17,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:12:17,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906643878] [2023-12-25 23:12:17,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:12:17,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:12:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:12:18,292 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:12:18,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:12:18,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906643878] [2023-12-25 23:12:18,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906643878] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:12:18,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:12:18,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:12:18,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773684971] [2023-12-25 23:12:18,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:12:18,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:12:18,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:12:18,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:12:18,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:12:18,294 INFO L87 Difference]: Start difference. First operand 5003 states and 7747 transitions. Second operand has 7 states, 7 states have (on average 29.285714285714285) internal successors, (205), 6 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:12:18,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:12:18,477 INFO L93 Difference]: Finished difference Result 7428 states and 11555 transitions. [2023-12-25 23:12:18,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 23:12:18,477 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.285714285714285) internal successors, (205), 6 states have internal predecessors, (205), 0 states have call successors, (0), 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 205 [2023-12-25 23:12:18,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:12:18,480 INFO L225 Difference]: With dead ends: 7428 [2023-12-25 23:12:18,480 INFO L226 Difference]: Without dead ends: 4185 [2023-12-25 23:12:18,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-25 23:12:18,483 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 1239 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 2019 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:12:18,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 2019 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:12:18,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4185 states. [2023-12-25 23:12:18,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4185 to 4091. [2023-12-25 23:12:18,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4091 states, 4090 states have (on average 1.547677261613692) internal successors, (6330), 4090 states have internal predecessors, (6330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:12:18,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4091 states to 4091 states and 6330 transitions. [2023-12-25 23:12:18,567 INFO L78 Accepts]: Start accepts. Automaton has 4091 states and 6330 transitions. Word has length 205 [2023-12-25 23:12:18,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:12:18,568 INFO L495 AbstractCegarLoop]: Abstraction has 4091 states and 6330 transitions. [2023-12-25 23:12:18,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.285714285714285) internal successors, (205), 6 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:12:18,568 INFO L276 IsEmpty]: Start isEmpty. Operand 4091 states and 6330 transitions. [2023-12-25 23:12:18,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-12-25 23:12:18,570 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:12:18,570 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:12:18,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-25 23:12:18,571 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:12:18,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:12:18,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1056008862, now seen corresponding path program 1 times [2023-12-25 23:12:18,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:12:18,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494347525] [2023-12-25 23:12:18,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:12:18,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:12:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:12:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:12:19,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:12:19,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494347525] [2023-12-25 23:12:19,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494347525] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:12:19,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454099615] [2023-12-25 23:12:19,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:12:19,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:12:19,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:12:19,988 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:12:19,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-25 23:12:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:12:20,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 1653 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-25 23:12:20,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:12:20,864 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:12:20,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:12:21,448 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 23:12:21,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454099615] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:12:21,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:12:21,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 14] total 28 [2023-12-25 23:12:21,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261111379] [2023-12-25 23:12:21,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:12:21,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-25 23:12:21,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:12:21,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-25 23:12:21,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=683, Unknown=0, NotChecked=0, Total=812 [2023-12-25 23:12:21,450 INFO L87 Difference]: Start difference. First operand 4091 states and 6330 transitions. Second operand has 29 states, 29 states have (on average 14.89655172413793) internal successors, (432), 28 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:12:22,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:12:22,905 INFO L93 Difference]: Finished difference Result 12730 states and 19855 transitions. [2023-12-25 23:12:22,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-25 23:12:22,905 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 14.89655172413793) internal successors, (432), 28 states have internal predecessors, (432), 0 states have call successors, (0), 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 205 [2023-12-25 23:12:22,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:12:22,915 INFO L225 Difference]: With dead ends: 12730 [2023-12-25 23:12:22,915 INFO L226 Difference]: Without dead ends: 10456 [2023-12-25 23:12:22,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 387 SyntacticMatches, 6 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1153 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=919, Invalid=3113, Unknown=0, NotChecked=0, Total=4032 [2023-12-25 23:12:22,920 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 9089 mSDsluCounter, 6736 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9089 SdHoareTripleChecker+Valid, 7204 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 23:12:22,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9089 Valid, 7204 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 23:12:22,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10456 states. [2023-12-25 23:12:23,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10456 to 4115. [2023-12-25 23:12:23,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4115 states, 4114 states have (on average 1.5415653864851726) internal successors, (6342), 4114 states have internal predecessors, (6342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:12:23,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4115 states to 4115 states and 6342 transitions. [2023-12-25 23:12:23,085 INFO L78 Accepts]: Start accepts. Automaton has 4115 states and 6342 transitions. Word has length 205 [2023-12-25 23:12:23,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:12:23,085 INFO L495 AbstractCegarLoop]: Abstraction has 4115 states and 6342 transitions. [2023-12-25 23:12:23,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 14.89655172413793) internal successors, (432), 28 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:12:23,085 INFO L276 IsEmpty]: Start isEmpty. Operand 4115 states and 6342 transitions. [2023-12-25 23:12:23,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-12-25 23:12:23,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:12:23,088 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:12:23,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-25 23:12:23,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:12:23,297 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:12:23,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:12:23,298 INFO L85 PathProgramCache]: Analyzing trace with hash 694024602, now seen corresponding path program 1 times [2023-12-25 23:12:23,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:12:23,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987394799] [2023-12-25 23:12:23,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:12:23,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:12:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:12:23,883 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:12:23,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:12:23,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987394799] [2023-12-25 23:12:23,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987394799] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:12:23,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:12:23,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:12:23,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109226040] [2023-12-25 23:12:23,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:12:23,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:12:23,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:12:23,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:12:23,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:12:23,884 INFO L87 Difference]: Start difference. First operand 4115 states and 6342 transitions. Second operand has 7 states, 7 states have (on average 29.285714285714285) internal successors, (205), 6 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:12:24,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:12:24,427 INFO L93 Difference]: Finished difference Result 11800 states and 18145 transitions. [2023-12-25 23:12:24,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 23:12:24,428 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.285714285714285) internal successors, (205), 6 states have internal predecessors, (205), 0 states have call successors, (0), 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 205 [2023-12-25 23:12:24,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:12:24,434 INFO L225 Difference]: With dead ends: 11800 [2023-12-25 23:12:24,434 INFO L226 Difference]: Without dead ends: 8054 [2023-12-25 23:12:24,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-25 23:12:24,437 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 577 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 23:12:24,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 1520 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 23:12:24,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8054 states. [2023-12-25 23:12:24,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8054 to 4285. [2023-12-25 23:12:24,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4285 states, 4284 states have (on average 1.5280112044817926) internal successors, (6546), 4284 states have internal predecessors, (6546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:12:24,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4285 states to 4285 states and 6546 transitions. [2023-12-25 23:12:24,529 INFO L78 Accepts]: Start accepts. Automaton has 4285 states and 6546 transitions. Word has length 205 [2023-12-25 23:12:24,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:12:24,529 INFO L495 AbstractCegarLoop]: Abstraction has 4285 states and 6546 transitions. [2023-12-25 23:12:24,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.285714285714285) internal successors, (205), 6 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:12:24,529 INFO L276 IsEmpty]: Start isEmpty. Operand 4285 states and 6546 transitions. [2023-12-25 23:12:24,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-12-25 23:12:24,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:12:24,532 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:12:24,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-25 23:12:24,532 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:12:24,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:12:24,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1373349564, now seen corresponding path program 1 times [2023-12-25 23:12:24,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:12:24,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130608789] [2023-12-25 23:12:24,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:12:24,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:12:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:12:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:12:27,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:12:27,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130608789] [2023-12-25 23:12:27,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130608789] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:12:27,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121278144] [2023-12-25 23:12:27,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:12:27,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:12:27,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:12:27,814 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:12:27,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-25 23:12:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:12:28,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 1654 conjuncts, 143 conjunts are in the unsatisfiable core [2023-12-25 23:12:28,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:12:31,437 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:12:31,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:12:35,575 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:12:35,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121278144] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:12:35,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:12:35,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 27, 28] total 70 [2023-12-25 23:12:35,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645512079] [2023-12-25 23:12:35,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:12:35,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2023-12-25 23:12:35,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:12:35,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2023-12-25 23:12:35,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=521, Invalid=4449, Unknown=0, NotChecked=0, Total=4970 [2023-12-25 23:12:35,578 INFO L87 Difference]: Start difference. First operand 4285 states and 6546 transitions. Second operand has 71 states, 71 states have (on average 8.43661971830986) internal successors, (599), 70 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:12:52,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:12:52,631 INFO L93 Difference]: Finished difference Result 16594 states and 25510 transitions. [2023-12-25 23:12:52,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2023-12-25 23:12:52,631 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 8.43661971830986) internal successors, (599), 70 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2023-12-25 23:12:52,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:12:52,645 INFO L225 Difference]: With dead ends: 16594 [2023-12-25 23:12:52,645 INFO L226 Difference]: Without dead ends: 15910 [2023-12-25 23:12:52,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 359 SyntacticMatches, 1 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14285 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=5645, Invalid=35361, Unknown=0, NotChecked=0, Total=41006 [2023-12-25 23:12:52,649 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 12647 mSDsluCounter, 16629 mSDsCounter, 0 mSdLazyCounter, 12652 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12647 SdHoareTripleChecker+Valid, 17045 SdHoareTripleChecker+Invalid, 12702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 12652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:12:52,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12647 Valid, 17045 Invalid, 12702 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 12652 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-12-25 23:12:52,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15910 states. [2023-12-25 23:12:52,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15910 to 4338. [2023-12-25 23:12:52,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4338 states, 4337 states have (on average 1.527553608485128) internal successors, (6625), 4337 states have internal predecessors, (6625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:12:52,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4338 states to 4338 states and 6625 transitions. [2023-12-25 23:12:52,780 INFO L78 Accepts]: Start accepts. Automaton has 4338 states and 6625 transitions. Word has length 205 [2023-12-25 23:12:52,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:12:52,780 INFO L495 AbstractCegarLoop]: Abstraction has 4338 states and 6625 transitions. [2023-12-25 23:12:52,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 8.43661971830986) internal successors, (599), 70 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:12:52,781 INFO L276 IsEmpty]: Start isEmpty. Operand 4338 states and 6625 transitions. [2023-12-25 23:12:52,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-12-25 23:12:52,783 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:12:52,783 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:12:52,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-25 23:12:52,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-25 23:12:52,992 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:12:52,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:12:52,992 INFO L85 PathProgramCache]: Analyzing trace with hash 779757254, now seen corresponding path program 1 times [2023-12-25 23:12:52,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:12:52,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967325786] [2023-12-25 23:12:52,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:12:52,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:12:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:12:56,379 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:12:56,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:12:56,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967325786] [2023-12-25 23:12:56,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967325786] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:12:56,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797062644] [2023-12-25 23:12:56,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:12:56,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:12:56,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:12:56,381 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:12:56,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-25 23:12:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:12:56,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 1655 conjuncts, 79 conjunts are in the unsatisfiable core [2023-12-25 23:12:56,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:12:57,481 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:12:57,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:12:58,101 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:12:58,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797062644] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:12:58,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:12:58,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18, 14] total 40 [2023-12-25 23:12:58,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727306710] [2023-12-25 23:12:58,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:12:58,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-25 23:12:58,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:12:58,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-25 23:12:58,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1429, Unknown=0, NotChecked=0, Total=1640 [2023-12-25 23:12:58,104 INFO L87 Difference]: Start difference. First operand 4338 states and 6625 transitions. Second operand has 41 states, 41 states have (on average 13.365853658536585) internal successors, (548), 40 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:05,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:13:05,559 INFO L93 Difference]: Finished difference Result 37212 states and 57152 transitions. [2023-12-25 23:13:05,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-12-25 23:13:05,560 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 13.365853658536585) internal successors, (548), 40 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2023-12-25 23:13:05,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:13:05,586 INFO L225 Difference]: With dead ends: 37212 [2023-12-25 23:13:05,586 INFO L226 Difference]: Without dead ends: 35029 [2023-12-25 23:13:05,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 383 SyntacticMatches, 3 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5279 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=3735, Invalid=13557, Unknown=0, NotChecked=0, Total=17292 [2023-12-25 23:13:05,591 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 22339 mSDsluCounter, 13452 mSDsCounter, 0 mSdLazyCounter, 4478 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22339 SdHoareTripleChecker+Valid, 13934 SdHoareTripleChecker+Invalid, 4545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 4478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-25 23:13:05,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22339 Valid, 13934 Invalid, 4545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 4478 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-25 23:13:05,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35029 states. [2023-12-25 23:13:05,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35029 to 6061. [2023-12-25 23:13:05,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6061 states, 6060 states have (on average 1.5235973597359735) internal successors, (9233), 6060 states have internal predecessors, (9233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:05,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6061 states to 6061 states and 9233 transitions. [2023-12-25 23:13:05,813 INFO L78 Accepts]: Start accepts. Automaton has 6061 states and 9233 transitions. Word has length 205 [2023-12-25 23:13:05,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:13:05,814 INFO L495 AbstractCegarLoop]: Abstraction has 6061 states and 9233 transitions. [2023-12-25 23:13:05,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 13.365853658536585) internal successors, (548), 40 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:05,814 INFO L276 IsEmpty]: Start isEmpty. Operand 6061 states and 9233 transitions. [2023-12-25 23:13:05,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-12-25 23:13:05,816 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:13:05,817 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:13:05,826 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-25 23:13:06,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-25 23:13:06,026 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:13:06,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:13:06,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1943683310, now seen corresponding path program 1 times [2023-12-25 23:13:06,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:13:06,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406218944] [2023-12-25 23:13:06,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:13:06,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:13:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:13:07,590 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:13:07,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:13:07,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406218944] [2023-12-25 23:13:07,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406218944] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:13:07,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019691440] [2023-12-25 23:13:07,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:13:07,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:13:07,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:13:07,592 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:13:07,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-25 23:13:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:13:08,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 111 conjunts are in the unsatisfiable core [2023-12-25 23:13:08,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:13:09,095 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:13:09,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:13:10,730 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:13:10,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019691440] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:13:10,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:13:10,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 20, 19] total 46 [2023-12-25 23:13:10,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985404777] [2023-12-25 23:13:10,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:13:10,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-25 23:13:10,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:13:10,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-25 23:13:10,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1880, Unknown=0, NotChecked=0, Total=2162 [2023-12-25 23:13:10,733 INFO L87 Difference]: Start difference. First operand 6061 states and 9233 transitions. Second operand has 47 states, 47 states have (on average 12.170212765957446) internal successors, (572), 46 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:19,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:13:19,466 INFO L93 Difference]: Finished difference Result 75265 states and 115552 transitions. [2023-12-25 23:13:19,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2023-12-25 23:13:19,468 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 12.170212765957446) internal successors, (572), 46 states have internal predecessors, (572), 0 states have call successors, (0), 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 206 [2023-12-25 23:13:19,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:13:19,532 INFO L225 Difference]: With dead ends: 75265 [2023-12-25 23:13:19,532 INFO L226 Difference]: Without dead ends: 70299 [2023-12-25 23:13:19,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 375 SyntacticMatches, 2 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12697 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=7163, Invalid=23989, Unknown=0, NotChecked=0, Total=31152 [2023-12-25 23:13:19,546 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 34044 mSDsluCounter, 17266 mSDsCounter, 0 mSdLazyCounter, 2383 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34044 SdHoareTripleChecker+Valid, 17804 SdHoareTripleChecker+Invalid, 2514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:13:19,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34044 Valid, 17804 Invalid, 2514 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [131 Valid, 2383 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-25 23:13:19,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70299 states. [2023-12-25 23:13:20,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70299 to 11495. [2023-12-25 23:13:20,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11495 states, 11494 states have (on average 1.524795545502001) internal successors, (17526), 11494 states have internal predecessors, (17526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:20,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11495 states to 11495 states and 17526 transitions. [2023-12-25 23:13:20,146 INFO L78 Accepts]: Start accepts. Automaton has 11495 states and 17526 transitions. Word has length 206 [2023-12-25 23:13:20,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:13:20,146 INFO L495 AbstractCegarLoop]: Abstraction has 11495 states and 17526 transitions. [2023-12-25 23:13:20,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 12.170212765957446) internal successors, (572), 46 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:20,147 INFO L276 IsEmpty]: Start isEmpty. Operand 11495 states and 17526 transitions. [2023-12-25 23:13:20,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-12-25 23:13:20,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:13:20,151 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:13:20,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-25 23:13:20,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-25 23:13:20,360 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:13:20,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:13:20,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1036916938, now seen corresponding path program 1 times [2023-12-25 23:13:20,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:13:20,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345326184] [2023-12-25 23:13:20,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:13:20,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:13:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:13:22,530 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:13:22,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:13:22,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345326184] [2023-12-25 23:13:22,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345326184] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:13:22,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647154192] [2023-12-25 23:13:22,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:13:22,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:13:22,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:13:22,532 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:13:22,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-25 23:13:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:13:23,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-25 23:13:23,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:13:23,921 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:13:23,921 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:13:25,269 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:13:25,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647154192] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:13:25,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:13:25,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 18] total 44 [2023-12-25 23:13:25,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432134737] [2023-12-25 23:13:25,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:13:25,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-25 23:13:25,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:13:25,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-25 23:13:25,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1774, Unknown=0, NotChecked=0, Total=1980 [2023-12-25 23:13:25,272 INFO L87 Difference]: Start difference. First operand 11495 states and 17526 transitions. Second operand has 45 states, 45 states have (on average 13.311111111111112) internal successors, (599), 44 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:29,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:13:29,534 INFO L93 Difference]: Finished difference Result 32961 states and 50698 transitions. [2023-12-25 23:13:29,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-25 23:13:29,534 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 13.311111111111112) internal successors, (599), 44 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2023-12-25 23:13:29,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:13:29,559 INFO L225 Difference]: With dead ends: 32961 [2023-12-25 23:13:29,559 INFO L226 Difference]: Without dead ends: 28008 [2023-12-25 23:13:29,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2308 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1386, Invalid=7356, Unknown=0, NotChecked=0, Total=8742 [2023-12-25 23:13:29,570 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 8450 mSDsluCounter, 9321 mSDsCounter, 0 mSdLazyCounter, 5187 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8450 SdHoareTripleChecker+Valid, 9736 SdHoareTripleChecker+Invalid, 5219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 5187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-25 23:13:29,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8450 Valid, 9736 Invalid, 5219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 5187 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-25 23:13:29,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28008 states. [2023-12-25 23:13:29,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28008 to 11501. [2023-12-25 23:13:29,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11501 states, 11500 states have (on average 1.5229565217391305) internal successors, (17514), 11500 states have internal predecessors, (17514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:29,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11501 states to 11501 states and 17514 transitions. [2023-12-25 23:13:29,888 INFO L78 Accepts]: Start accepts. Automaton has 11501 states and 17514 transitions. Word has length 206 [2023-12-25 23:13:29,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:13:29,888 INFO L495 AbstractCegarLoop]: Abstraction has 11501 states and 17514 transitions. [2023-12-25 23:13:29,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 13.311111111111112) internal successors, (599), 44 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:29,888 INFO L276 IsEmpty]: Start isEmpty. Operand 11501 states and 17514 transitions. [2023-12-25 23:13:29,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-12-25 23:13:29,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:13:29,891 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:13:29,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-25 23:13:30,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-25 23:13:30,101 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:13:30,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:13:30,101 INFO L85 PathProgramCache]: Analyzing trace with hash -2068927742, now seen corresponding path program 1 times [2023-12-25 23:13:30,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:13:30,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000650993] [2023-12-25 23:13:30,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:13:30,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:13:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:13:30,655 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:13:30,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:13:30,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000650993] [2023-12-25 23:13:30,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000650993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:13:30,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:13:30,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 23:13:30,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956797150] [2023-12-25 23:13:30,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:13:30,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:13:30,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:13:30,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:13:30,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:13:30,657 INFO L87 Difference]: Start difference. First operand 11501 states and 17514 transitions. Second operand has 7 states, 7 states have (on average 29.428571428571427) internal successors, (206), 7 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:31,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:13:31,330 INFO L93 Difference]: Finished difference Result 47996 states and 73153 transitions. [2023-12-25 23:13:31,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 23:13:31,330 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.428571428571427) internal successors, (206), 7 states have internal predecessors, (206), 0 states have call successors, (0), 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 206 [2023-12-25 23:13:31,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:13:31,368 INFO L225 Difference]: With dead ends: 47996 [2023-12-25 23:13:31,368 INFO L226 Difference]: Without dead ends: 36818 [2023-12-25 23:13:31,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-12-25 23:13:31,385 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 1075 mSDsluCounter, 2373 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 2865 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:13:31,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 2865 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:13:31,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36818 states. [2023-12-25 23:13:31,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36818 to 12957. [2023-12-25 23:13:31,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12957 states, 12956 states have (on average 1.5133528866934238) internal successors, (19607), 12956 states have internal predecessors, (19607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:31,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12957 states to 12957 states and 19607 transitions. [2023-12-25 23:13:31,770 INFO L78 Accepts]: Start accepts. Automaton has 12957 states and 19607 transitions. Word has length 206 [2023-12-25 23:13:31,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:13:31,770 INFO L495 AbstractCegarLoop]: Abstraction has 12957 states and 19607 transitions. [2023-12-25 23:13:31,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.428571428571427) internal successors, (206), 7 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:31,771 INFO L276 IsEmpty]: Start isEmpty. Operand 12957 states and 19607 transitions. [2023-12-25 23:13:31,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-12-25 23:13:31,775 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:13:31,775 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:13:31,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-25 23:13:31,775 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:13:31,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:13:31,775 INFO L85 PathProgramCache]: Analyzing trace with hash 505463208, now seen corresponding path program 1 times [2023-12-25 23:13:31,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:13:31,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334175036] [2023-12-25 23:13:31,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:13:31,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:13:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:13:32,085 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:13:32,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:13:32,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334175036] [2023-12-25 23:13:32,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334175036] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:13:32,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:13:32,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:13:32,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709409967] [2023-12-25 23:13:32,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:13:32,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 23:13:32,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:13:32,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 23:13:32,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:13:32,086 INFO L87 Difference]: Start difference. First operand 12957 states and 19607 transitions. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:32,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:13:32,582 INFO L93 Difference]: Finished difference Result 37547 states and 56636 transitions. [2023-12-25 23:13:32,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 23:13:32,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 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 206 [2023-12-25 23:13:32,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:13:32,609 INFO L225 Difference]: With dead ends: 37547 [2023-12-25 23:13:32,610 INFO L226 Difference]: Without dead ends: 25147 [2023-12-25 23:13:32,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:13:32,623 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 260 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:13:32,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 1433 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:13:32,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25147 states. [2023-12-25 23:13:32,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25147 to 13321. [2023-12-25 23:13:32,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13321 states, 13320 states have (on average 1.4993243243243244) internal successors, (19971), 13320 states have internal predecessors, (19971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:32,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13321 states to 13321 states and 19971 transitions. [2023-12-25 23:13:32,968 INFO L78 Accepts]: Start accepts. Automaton has 13321 states and 19971 transitions. Word has length 206 [2023-12-25 23:13:32,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:13:32,968 INFO L495 AbstractCegarLoop]: Abstraction has 13321 states and 19971 transitions. [2023-12-25 23:13:32,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:32,969 INFO L276 IsEmpty]: Start isEmpty. Operand 13321 states and 19971 transitions. [2023-12-25 23:13:32,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-25 23:13:32,972 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:13:32,973 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:13:32,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-25 23:13:32,973 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:13:32,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:13:32,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1699781364, now seen corresponding path program 1 times [2023-12-25 23:13:32,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:13:32,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360400232] [2023-12-25 23:13:32,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:13:32,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:13:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:13:33,285 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:13:33,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:13:33,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360400232] [2023-12-25 23:13:33,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360400232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:13:33,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:13:33,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 23:13:33,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081916945] [2023-12-25 23:13:33,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:13:33,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:13:33,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:13:33,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:13:33,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:13:33,287 INFO L87 Difference]: Start difference. First operand 13321 states and 19971 transitions. Second operand has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:33,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:13:33,856 INFO L93 Difference]: Finished difference Result 38228 states and 57034 transitions. [2023-12-25 23:13:33,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 23:13:33,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2023-12-25 23:13:33,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:13:33,883 INFO L225 Difference]: With dead ends: 38228 [2023-12-25 23:13:33,883 INFO L226 Difference]: Without dead ends: 25383 [2023-12-25 23:13:33,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 23:13:33,891 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 257 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:13:33,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 1882 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:13:33,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25383 states. [2023-12-25 23:13:34,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25383 to 13685. [2023-12-25 23:13:34,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13685 states, 13684 states have (on average 1.4860420929552762) internal successors, (20335), 13684 states have internal predecessors, (20335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:34,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13685 states to 13685 states and 20335 transitions. [2023-12-25 23:13:34,240 INFO L78 Accepts]: Start accepts. Automaton has 13685 states and 20335 transitions. Word has length 207 [2023-12-25 23:13:34,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:13:34,240 INFO L495 AbstractCegarLoop]: Abstraction has 13685 states and 20335 transitions. [2023-12-25 23:13:34,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:34,240 INFO L276 IsEmpty]: Start isEmpty. Operand 13685 states and 20335 transitions. [2023-12-25 23:13:34,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-25 23:13:34,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:13:34,244 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:13:34,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-25 23:13:34,244 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:13:34,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:13:34,245 INFO L85 PathProgramCache]: Analyzing trace with hash -407181310, now seen corresponding path program 1 times [2023-12-25 23:13:34,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:13:34,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208505244] [2023-12-25 23:13:34,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:13:34,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:13:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:13:34,522 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:13:34,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:13:34,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208505244] [2023-12-25 23:13:34,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208505244] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:13:34,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:13:34,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 23:13:34,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143872345] [2023-12-25 23:13:34,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:13:34,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:13:34,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:13:34,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:13:34,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:13:34,524 INFO L87 Difference]: Start difference. First operand 13685 states and 20335 transitions. Second operand has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:34,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:13:34,964 INFO L93 Difference]: Finished difference Result 40939 states and 60800 transitions. [2023-12-25 23:13:34,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 23:13:34,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2023-12-25 23:13:34,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:13:34,993 INFO L225 Difference]: With dead ends: 40939 [2023-12-25 23:13:34,993 INFO L226 Difference]: Without dead ends: 27739 [2023-12-25 23:13:35,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:13:35,007 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 526 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:13:35,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 1787 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:13:35,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27739 states. [2023-12-25 23:13:35,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27739 to 14322. [2023-12-25 23:13:35,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14322 states, 14321 states have (on average 1.4771314852314783) internal successors, (21154), 14321 states have internal predecessors, (21154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:35,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14322 states to 14322 states and 21154 transitions. [2023-12-25 23:13:35,497 INFO L78 Accepts]: Start accepts. Automaton has 14322 states and 21154 transitions. Word has length 207 [2023-12-25 23:13:35,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:13:35,497 INFO L495 AbstractCegarLoop]: Abstraction has 14322 states and 21154 transitions. [2023-12-25 23:13:35,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:35,498 INFO L276 IsEmpty]: Start isEmpty. Operand 14322 states and 21154 transitions. [2023-12-25 23:13:35,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-25 23:13:35,502 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:13:35,502 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:13:35,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-25 23:13:35,502 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:13:35,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:13:35,503 INFO L85 PathProgramCache]: Analyzing trace with hash -2048857060, now seen corresponding path program 1 times [2023-12-25 23:13:35,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:13:35,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904147934] [2023-12-25 23:13:35,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:13:35,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:13:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:13:35,803 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:13:35,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:13:35,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904147934] [2023-12-25 23:13:35,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904147934] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:13:35,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:13:35,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:13:35,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485773053] [2023-12-25 23:13:35,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:13:35,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:13:35,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:13:35,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:13:35,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:13:35,805 INFO L87 Difference]: Start difference. First operand 14322 states and 21154 transitions. Second operand has 5 states, 5 states have (on average 41.4) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:36,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:13:36,094 INFO L93 Difference]: Finished difference Result 28956 states and 42833 transitions. [2023-12-25 23:13:36,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:13:36,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2023-12-25 23:13:36,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:13:36,108 INFO L225 Difference]: With dead ends: 28956 [2023-12-25 23:13:36,108 INFO L226 Difference]: Without dead ends: 15137 [2023-12-25 23:13:36,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:13:36,117 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 1113 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:13:36,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1113 Valid, 1277 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:13:36,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15137 states. [2023-12-25 23:13:36,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15137 to 14259. [2023-12-25 23:13:36,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14259 states, 14258 states have (on average 1.4754523776125683) internal successors, (21037), 14258 states have internal predecessors, (21037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:36,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14259 states to 14259 states and 21037 transitions. [2023-12-25 23:13:36,414 INFO L78 Accepts]: Start accepts. Automaton has 14259 states and 21037 transitions. Word has length 207 [2023-12-25 23:13:36,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:13:36,414 INFO L495 AbstractCegarLoop]: Abstraction has 14259 states and 21037 transitions. [2023-12-25 23:13:36,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:36,414 INFO L276 IsEmpty]: Start isEmpty. Operand 14259 states and 21037 transitions. [2023-12-25 23:13:36,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-25 23:13:36,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:13:36,418 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:13:36,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-25 23:13:36,418 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:13:36,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:13:36,419 INFO L85 PathProgramCache]: Analyzing trace with hash -495080586, now seen corresponding path program 1 times [2023-12-25 23:13:36,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:13:36,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740899858] [2023-12-25 23:13:36,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:13:36,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:13:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:13:36,691 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:13:36,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:13:36,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740899858] [2023-12-25 23:13:36,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740899858] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:13:36,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:13:36,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:13:36,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415894453] [2023-12-25 23:13:36,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:13:36,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 23:13:36,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:13:36,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 23:13:36,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:13:36,692 INFO L87 Difference]: Start difference. First operand 14259 states and 21037 transitions. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:36,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:13:36,976 INFO L93 Difference]: Finished difference Result 21667 states and 31949 transitions. [2023-12-25 23:13:36,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 23:13:36,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2023-12-25 23:13:36,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:13:36,988 INFO L225 Difference]: With dead ends: 21667 [2023-12-25 23:13:36,988 INFO L226 Difference]: Without dead ends: 14355 [2023-12-25 23:13:36,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:13:36,994 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 1 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:13:36,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1247 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:13:37,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14355 states. [2023-12-25 23:13:37,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14355 to 14323. [2023-12-25 23:13:37,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14323 states, 14322 states have (on average 1.4733277475212958) internal successors, (21101), 14322 states have internal predecessors, (21101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:37,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14323 states to 14323 states and 21101 transitions. [2023-12-25 23:13:37,283 INFO L78 Accepts]: Start accepts. Automaton has 14323 states and 21101 transitions. Word has length 207 [2023-12-25 23:13:37,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:13:37,283 INFO L495 AbstractCegarLoop]: Abstraction has 14323 states and 21101 transitions. [2023-12-25 23:13:37,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:13:37,283 INFO L276 IsEmpty]: Start isEmpty. Operand 14323 states and 21101 transitions. [2023-12-25 23:13:37,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-25 23:13:37,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:13:37,287 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:13:37,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-25 23:13:37,287 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:13:37,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:13:37,288 INFO L85 PathProgramCache]: Analyzing trace with hash -648357062, now seen corresponding path program 1 times [2023-12-25 23:13:37,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:13:37,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125778188] [2023-12-25 23:13:37,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:13:37,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:13:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:13:38,907 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:13:38,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:13:38,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125778188] [2023-12-25 23:13:38,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125778188] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:13:38,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388265836] [2023-12-25 23:13:38,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:13:38,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:13:38,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:13:38,911 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:13:38,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-25 23:13:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:13:39,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 100 conjunts are in the unsatisfiable core [2023-12-25 23:13:39,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:13:40,961 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:13:40,961 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:13:50,796 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:13:50,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388265836] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:13:50,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:13:50,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 21, 14] total 42 [2023-12-25 23:13:50,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398596600] [2023-12-25 23:13:50,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:13:50,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-25 23:13:50,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:13:50,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-25 23:13:50,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1633, Unknown=0, NotChecked=0, Total=1806 [2023-12-25 23:13:50,799 INFO L87 Difference]: Start difference. First operand 14323 states and 21101 transitions. Second operand has 43 states, 43 states have (on average 14.162790697674419) internal successors, (609), 42 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:08,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:14:08,669 INFO L93 Difference]: Finished difference Result 112551 states and 166590 transitions. [2023-12-25 23:14:08,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2023-12-25 23:14:08,669 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 14.162790697674419) internal successors, (609), 42 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2023-12-25 23:14:08,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:14:08,765 INFO L225 Difference]: With dead ends: 112551 [2023-12-25 23:14:08,765 INFO L226 Difference]: Without dead ends: 103522 [2023-12-25 23:14:08,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16951 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=8619, Invalid=31983, Unknown=0, NotChecked=0, Total=40602 [2023-12-25 23:14:08,782 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 21666 mSDsluCounter, 13882 mSDsCounter, 0 mSdLazyCounter, 7197 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21666 SdHoareTripleChecker+Valid, 14159 SdHoareTripleChecker+Invalid, 7240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 7197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-25 23:14:08,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21666 Valid, 14159 Invalid, 7240 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [43 Valid, 7197 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-25 23:14:08,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103522 states. [2023-12-25 23:14:09,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103522 to 15092. [2023-12-25 23:14:09,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15092 states, 15091 states have (on average 1.472069445364787) internal successors, (22215), 15091 states have internal predecessors, (22215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:09,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15092 states to 15092 states and 22215 transitions. [2023-12-25 23:14:09,696 INFO L78 Accepts]: Start accepts. Automaton has 15092 states and 22215 transitions. Word has length 207 [2023-12-25 23:14:09,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:14:09,696 INFO L495 AbstractCegarLoop]: Abstraction has 15092 states and 22215 transitions. [2023-12-25 23:14:09,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 14.162790697674419) internal successors, (609), 42 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:09,697 INFO L276 IsEmpty]: Start isEmpty. Operand 15092 states and 22215 transitions. [2023-12-25 23:14:09,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-25 23:14:09,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:14:09,703 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:14:09,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-25 23:14:09,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:14:09,913 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:14:09,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:14:09,914 INFO L85 PathProgramCache]: Analyzing trace with hash -2108569926, now seen corresponding path program 1 times [2023-12-25 23:14:09,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:14:09,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497954258] [2023-12-25 23:14:09,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:09,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:14:09,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:10,212 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:10,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:14:10,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497954258] [2023-12-25 23:14:10,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497954258] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:14:10,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:14:10,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:14:10,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973681157] [2023-12-25 23:14:10,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:14:10,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:14:10,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:14:10,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:14:10,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:14:10,214 INFO L87 Difference]: Start difference. First operand 15092 states and 22215 transitions. Second operand has 5 states, 5 states have (on average 41.6) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:10,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:14:10,506 INFO L93 Difference]: Finished difference Result 29095 states and 42822 transitions. [2023-12-25 23:14:10,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:14:10,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2023-12-25 23:14:10,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:14:10,523 INFO L225 Difference]: With dead ends: 29095 [2023-12-25 23:14:10,524 INFO L226 Difference]: Without dead ends: 14191 [2023-12-25 23:14:10,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:14:10,535 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 1070 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:14:10,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1070 Valid, 1257 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:14:10,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14191 states. [2023-12-25 23:14:10,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14191 to 14004. [2023-12-25 23:14:10,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14004 states, 14003 states have (on average 1.4718274655430978) internal successors, (20610), 14003 states have internal predecessors, (20610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:10,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14004 states to 14004 states and 20610 transitions. [2023-12-25 23:14:10,848 INFO L78 Accepts]: Start accepts. Automaton has 14004 states and 20610 transitions. Word has length 208 [2023-12-25 23:14:10,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:14:10,849 INFO L495 AbstractCegarLoop]: Abstraction has 14004 states and 20610 transitions. [2023-12-25 23:14:10,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:10,849 INFO L276 IsEmpty]: Start isEmpty. Operand 14004 states and 20610 transitions. [2023-12-25 23:14:10,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-25 23:14:10,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:14:10,852 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:14:10,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-12-25 23:14:10,852 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:14:10,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:14:10,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1069784112, now seen corresponding path program 1 times [2023-12-25 23:14:10,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:14:10,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598641191] [2023-12-25 23:14:10,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:10,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:14:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:11,347 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:11,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:14:11,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598641191] [2023-12-25 23:14:11,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598641191] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:14:11,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:14:11,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 23:14:11,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569406956] [2023-12-25 23:14:11,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:14:11,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 23:14:11,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:14:11,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 23:14:11,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 23:14:11,349 INFO L87 Difference]: Start difference. First operand 14004 states and 20610 transitions. Second operand has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 5 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:11,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:14:11,647 INFO L93 Difference]: Finished difference Result 29333 states and 43179 transitions. [2023-12-25 23:14:11,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:14:11,649 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 5 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2023-12-25 23:14:11,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:14:11,661 INFO L225 Difference]: With dead ends: 29333 [2023-12-25 23:14:11,661 INFO L226 Difference]: Without dead ends: 15717 [2023-12-25 23:14:11,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-25 23:14:11,669 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 1077 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:14:11,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 1509 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:14:11,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15717 states. [2023-12-25 23:14:11,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15717 to 13852. [2023-12-25 23:14:11,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13852 states, 13851 states have (on average 1.4689192116092702) internal successors, (20346), 13851 states have internal predecessors, (20346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:11,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13852 states to 13852 states and 20346 transitions. [2023-12-25 23:14:11,962 INFO L78 Accepts]: Start accepts. Automaton has 13852 states and 20346 transitions. Word has length 208 [2023-12-25 23:14:11,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:14:11,962 INFO L495 AbstractCegarLoop]: Abstraction has 13852 states and 20346 transitions. [2023-12-25 23:14:11,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 5 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:11,962 INFO L276 IsEmpty]: Start isEmpty. Operand 13852 states and 20346 transitions. [2023-12-25 23:14:11,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-25 23:14:11,965 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:14:11,965 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:14:11,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-12-25 23:14:11,965 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:14:11,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:14:11,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1620348496, now seen corresponding path program 1 times [2023-12-25 23:14:11,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:14:11,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348248821] [2023-12-25 23:14:11,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:11,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:14:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:12,253 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:12,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:14:12,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348248821] [2023-12-25 23:14:12,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348248821] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:14:12,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:14:12,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:14:12,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853677990] [2023-12-25 23:14:12,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:14:12,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:14:12,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:14:12,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:14:12,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:14:12,254 INFO L87 Difference]: Start difference. First operand 13852 states and 20346 transitions. Second operand has 5 states, 5 states have (on average 41.6) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:12,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:14:12,690 INFO L93 Difference]: Finished difference Result 26619 states and 39192 transitions. [2023-12-25 23:14:12,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:14:12,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2023-12-25 23:14:12,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:14:12,703 INFO L225 Difference]: With dead ends: 26619 [2023-12-25 23:14:12,703 INFO L226 Difference]: Without dead ends: 13043 [2023-12-25 23:14:12,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:14:12,707 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 1032 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:14:12,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1032 Valid, 1266 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:14:12,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13043 states. [2023-12-25 23:14:12,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13043 to 12752. [2023-12-25 23:14:12,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12752 states, 12751 states have (on average 1.472668810289389) internal successors, (18778), 12751 states have internal predecessors, (18778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:12,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12752 states to 12752 states and 18778 transitions. [2023-12-25 23:14:12,982 INFO L78 Accepts]: Start accepts. Automaton has 12752 states and 18778 transitions. Word has length 208 [2023-12-25 23:14:12,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:14:12,982 INFO L495 AbstractCegarLoop]: Abstraction has 12752 states and 18778 transitions. [2023-12-25 23:14:12,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:12,982 INFO L276 IsEmpty]: Start isEmpty. Operand 12752 states and 18778 transitions. [2023-12-25 23:14:12,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-25 23:14:12,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:14:12,985 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:14:12,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-12-25 23:14:12,985 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:14:12,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:14:12,985 INFO L85 PathProgramCache]: Analyzing trace with hash 171258146, now seen corresponding path program 1 times [2023-12-25 23:14:12,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:14:12,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428962103] [2023-12-25 23:14:12,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:12,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:14:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:13,237 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:13,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:14:13,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428962103] [2023-12-25 23:14:13,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428962103] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:14:13,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:14:13,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:14:13,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373747307] [2023-12-25 23:14:13,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:14:13,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 23:14:13,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:14:13,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 23:14:13,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:14:13,239 INFO L87 Difference]: Start difference. First operand 12752 states and 18778 transitions. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:13,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:14:13,454 INFO L93 Difference]: Finished difference Result 22318 states and 32874 transitions. [2023-12-25 23:14:13,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 23:14:13,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2023-12-25 23:14:13,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:14:13,466 INFO L225 Difference]: With dead ends: 22318 [2023-12-25 23:14:13,466 INFO L226 Difference]: Without dead ends: 12833 [2023-12-25 23:14:13,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:14:13,473 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 1 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:14:13,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1247 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:14:13,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12833 states. [2023-12-25 23:14:13,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12833 to 12806. [2023-12-25 23:14:13,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12806 states, 12805 states have (on average 1.470675517376025) internal successors, (18832), 12805 states have internal predecessors, (18832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:13,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12806 states to 12806 states and 18832 transitions. [2023-12-25 23:14:13,754 INFO L78 Accepts]: Start accepts. Automaton has 12806 states and 18832 transitions. Word has length 208 [2023-12-25 23:14:13,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:14:13,754 INFO L495 AbstractCegarLoop]: Abstraction has 12806 states and 18832 transitions. [2023-12-25 23:14:13,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:13,754 INFO L276 IsEmpty]: Start isEmpty. Operand 12806 states and 18832 transitions. [2023-12-25 23:14:13,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-25 23:14:13,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:14:13,756 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:14:13,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-12-25 23:14:13,757 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:14:13,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:14:13,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1017676306, now seen corresponding path program 1 times [2023-12-25 23:14:13,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:14:13,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989887783] [2023-12-25 23:14:13,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:13,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:14:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:15,654 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:15,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:14:15,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989887783] [2023-12-25 23:14:15,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989887783] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:14:15,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851317974] [2023-12-25 23:14:15,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:15,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:14:15,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:14:15,655 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:14:15,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-25 23:14:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:16,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 1664 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-25 23:14:16,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:14:17,009 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:17,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:14:17,497 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:17,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851317974] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:14:17,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:14:17,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 16, 11] total 28 [2023-12-25 23:14:17,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853513254] [2023-12-25 23:14:17,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:14:17,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-25 23:14:17,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:14:17,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-25 23:14:17,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=661, Unknown=0, NotChecked=0, Total=812 [2023-12-25 23:14:17,499 INFO L87 Difference]: Start difference. First operand 12806 states and 18832 transitions. Second operand has 29 states, 29 states have (on average 16.724137931034484) internal successors, (485), 28 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:20,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:14:20,805 INFO L93 Difference]: Finished difference Result 60987 states and 90027 transitions. [2023-12-25 23:14:20,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-25 23:14:20,806 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 16.724137931034484) internal successors, (485), 28 states have internal predecessors, (485), 0 states have call successors, (0), 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 208 [2023-12-25 23:14:20,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:14:20,860 INFO L225 Difference]: With dead ends: 60987 [2023-12-25 23:14:20,860 INFO L226 Difference]: Without dead ends: 54842 [2023-12-25 23:14:20,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 386 SyntacticMatches, 9 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1460 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1078, Invalid=3614, Unknown=0, NotChecked=0, Total=4692 [2023-12-25 23:14:20,874 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 10912 mSDsluCounter, 8124 mSDsCounter, 0 mSdLazyCounter, 2092 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10912 SdHoareTripleChecker+Valid, 9012 SdHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-25 23:14:20,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10912 Valid, 9012 Invalid, 2119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2092 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-25 23:14:20,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54842 states. [2023-12-25 23:14:21,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54842 to 19238. [2023-12-25 23:14:21,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19238 states, 19237 states have (on average 1.466132972916775) internal successors, (28204), 19237 states have internal predecessors, (28204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:21,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19238 states to 19238 states and 28204 transitions. [2023-12-25 23:14:21,464 INFO L78 Accepts]: Start accepts. Automaton has 19238 states and 28204 transitions. Word has length 208 [2023-12-25 23:14:21,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:14:21,464 INFO L495 AbstractCegarLoop]: Abstraction has 19238 states and 28204 transitions. [2023-12-25 23:14:21,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 16.724137931034484) internal successors, (485), 28 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:21,464 INFO L276 IsEmpty]: Start isEmpty. Operand 19238 states and 28204 transitions. [2023-12-25 23:14:21,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-25 23:14:21,466 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:14:21,466 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:14:21,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-25 23:14:21,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-12-25 23:14:21,667 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:14:21,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:14:21,668 INFO L85 PathProgramCache]: Analyzing trace with hash 2099382612, now seen corresponding path program 1 times [2023-12-25 23:14:21,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:14:21,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002644763] [2023-12-25 23:14:21,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:21,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:14:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:22,132 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:22,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:14:22,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002644763] [2023-12-25 23:14:22,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002644763] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:14:22,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:14:22,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:14:22,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232548183] [2023-12-25 23:14:22,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:14:22,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:14:22,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:14:22,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:14:22,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:14:22,134 INFO L87 Difference]: Start difference. First operand 19238 states and 28204 transitions. Second operand has 5 states, 5 states have (on average 41.8) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:22,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:14:22,495 INFO L93 Difference]: Finished difference Result 37471 states and 55019 transitions. [2023-12-25 23:14:22,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:14:22,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2023-12-25 23:14:22,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:14:22,514 INFO L225 Difference]: With dead ends: 37471 [2023-12-25 23:14:22,515 INFO L226 Difference]: Without dead ends: 18399 [2023-12-25 23:14:22,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:14:22,530 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 948 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:14:22,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 1248 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:14:22,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18399 states. [2023-12-25 23:14:22,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18399 to 18369. [2023-12-25 23:14:22,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18369 states, 18368 states have (on average 1.4707643728222997) internal successors, (27015), 18368 states have internal predecessors, (27015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:22,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18369 states to 18369 states and 27015 transitions. [2023-12-25 23:14:22,927 INFO L78 Accepts]: Start accepts. Automaton has 18369 states and 27015 transitions. Word has length 209 [2023-12-25 23:14:22,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:14:22,927 INFO L495 AbstractCegarLoop]: Abstraction has 18369 states and 27015 transitions. [2023-12-25 23:14:22,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:22,927 INFO L276 IsEmpty]: Start isEmpty. Operand 18369 states and 27015 transitions. [2023-12-25 23:14:22,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2023-12-25 23:14:22,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:14:22,938 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:14:22,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-12-25 23:14:22,938 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:14:22,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:14:22,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1152370821, now seen corresponding path program 1 times [2023-12-25 23:14:22,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:14:22,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775537165] [2023-12-25 23:14:22,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:22,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:14:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:26,594 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:26,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:14:26,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775537165] [2023-12-25 23:14:26,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775537165] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:14:26,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:14:26,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-25 23:14:26,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003622164] [2023-12-25 23:14:26,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:14:26,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 23:14:26,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:14:26,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 23:14:26,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-25 23:14:26,596 INFO L87 Difference]: Start difference. First operand 18369 states and 27015 transitions. Second operand has 11 states, 11 states have (on average 28.454545454545453) internal successors, (313), 11 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:27,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:14:27,857 INFO L93 Difference]: Finished difference Result 71171 states and 105515 transitions. [2023-12-25 23:14:27,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 23:14:27,858 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 28.454545454545453) internal successors, (313), 11 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 313 [2023-12-25 23:14:27,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:14:27,912 INFO L225 Difference]: With dead ends: 71171 [2023-12-25 23:14:27,912 INFO L226 Difference]: Without dead ends: 53657 [2023-12-25 23:14:27,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2023-12-25 23:14:27,934 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 3947 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3947 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 23:14:27,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3947 Valid, 1514 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 23:14:27,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53657 states. [2023-12-25 23:14:28,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53657 to 34064. [2023-12-25 23:14:28,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34064 states, 34063 states have (on average 1.4786718727064556) internal successors, (50368), 34063 states have internal predecessors, (50368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:28,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34064 states to 34064 states and 50368 transitions. [2023-12-25 23:14:28,715 INFO L78 Accepts]: Start accepts. Automaton has 34064 states and 50368 transitions. Word has length 313 [2023-12-25 23:14:28,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:14:28,715 INFO L495 AbstractCegarLoop]: Abstraction has 34064 states and 50368 transitions. [2023-12-25 23:14:28,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 28.454545454545453) internal successors, (313), 11 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:28,715 INFO L276 IsEmpty]: Start isEmpty. Operand 34064 states and 50368 transitions. [2023-12-25 23:14:28,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2023-12-25 23:14:28,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:14:28,733 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:14:28,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-12-25 23:14:28,733 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:14:28,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:14:28,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1860947769, now seen corresponding path program 1 times [2023-12-25 23:14:28,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:14:28,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605443909] [2023-12-25 23:14:28,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:28,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:14:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:35,319 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 75 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:35,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:14:35,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605443909] [2023-12-25 23:14:35,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605443909] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:14:35,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392938197] [2023-12-25 23:14:35,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:35,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:14:35,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:14:35,320 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:14:35,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-25 23:14:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:35,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 2810 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-25 23:14:35,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:14:36,507 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 80 proven. 21 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-12-25 23:14:36,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:14:37,170 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 77 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:37,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392938197] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:14:37,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:14:37,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 10] total 38 [2023-12-25 23:14:37,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910069966] [2023-12-25 23:14:37,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:14:37,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-25 23:14:37,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:14:37,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-25 23:14:37,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1268, Unknown=0, NotChecked=0, Total=1406 [2023-12-25 23:14:37,173 INFO L87 Difference]: Start difference. First operand 34064 states and 50368 transitions. Second operand has 38 states, 38 states have (on average 19.763157894736842) internal successors, (751), 38 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:54,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:14:54,010 INFO L93 Difference]: Finished difference Result 226104 states and 334481 transitions. [2023-12-25 23:14:54,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2023-12-25 23:14:54,011 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 19.763157894736842) internal successors, (751), 38 states have internal predecessors, (751), 0 states have call successors, (0), 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 313 [2023-12-25 23:14:54,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:14:54,170 INFO L225 Difference]: With dead ends: 226104 [2023-12-25 23:14:54,170 INFO L226 Difference]: Without dead ends: 192738 [2023-12-25 23:14:54,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 892 GetRequests, 635 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26221 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=8243, Invalid=58579, Unknown=0, NotChecked=0, Total=66822 [2023-12-25 23:14:54,188 INFO L413 NwaCegarLoop]: 709 mSDtfsCounter, 22587 mSDsluCounter, 14643 mSDsCounter, 0 mSdLazyCounter, 9166 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22587 SdHoareTripleChecker+Valid, 15352 SdHoareTripleChecker+Invalid, 9214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 9166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-25 23:14:54,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22587 Valid, 15352 Invalid, 9214 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 9166 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-25 23:14:54,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192738 states. [2023-12-25 23:14:55,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192738 to 30162. [2023-12-25 23:14:55,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30162 states, 30161 states have (on average 1.4870528165511754) internal successors, (44851), 30161 states have internal predecessors, (44851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:55,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30162 states to 30162 states and 44851 transitions. [2023-12-25 23:14:55,577 INFO L78 Accepts]: Start accepts. Automaton has 30162 states and 44851 transitions. Word has length 313 [2023-12-25 23:14:55,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:14:55,578 INFO L495 AbstractCegarLoop]: Abstraction has 30162 states and 44851 transitions. [2023-12-25 23:14:55,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 19.763157894736842) internal successors, (751), 38 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:14:55,578 INFO L276 IsEmpty]: Start isEmpty. Operand 30162 states and 44851 transitions. [2023-12-25 23:14:55,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2023-12-25 23:14:55,603 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:14:55,603 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:14:55,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-25 23:14:55,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:14:55,815 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:14:55,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:14:55,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1451283083, now seen corresponding path program 1 times [2023-12-25 23:14:55,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:14:55,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590509960] [2023-12-25 23:14:55,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:55,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:14:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:14:59,962 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 100 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:59,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:14:59,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590509960] [2023-12-25 23:14:59,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590509960] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:14:59,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177540112] [2023-12-25 23:14:59,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:14:59,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:14:59,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:14:59,964 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:14:59,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-25 23:15:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:15:00,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 2814 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-25 23:15:00,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:15:01,286 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 73 proven. 22 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-25 23:15:01,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:15:02,100 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 41 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:15:02,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177540112] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:15:02,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:15:02,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 12] total 37 [2023-12-25 23:15:02,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248536615] [2023-12-25 23:15:02,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:15:02,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-25 23:15:02,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:15:02,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-25 23:15:02,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1194, Unknown=0, NotChecked=0, Total=1406 [2023-12-25 23:15:02,103 INFO L87 Difference]: Start difference. First operand 30162 states and 44851 transitions. Second operand has 38 states, 38 states have (on average 22.105263157894736) internal successors, (840), 37 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:15:10,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:15:10,117 INFO L93 Difference]: Finished difference Result 180900 states and 269087 transitions. [2023-12-25 23:15:10,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2023-12-25 23:15:10,117 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 22.105263157894736) internal successors, (840), 37 states have internal predecessors, (840), 0 states have call successors, (0), 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 314 [2023-12-25 23:15:10,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:15:10,267 INFO L225 Difference]: With dead ends: 180900 [2023-12-25 23:15:10,267 INFO L226 Difference]: Without dead ends: 153401 [2023-12-25 23:15:10,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 603 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11036 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=5036, Invalid=25764, Unknown=0, NotChecked=0, Total=30800 [2023-12-25 23:15:10,309 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 20036 mSDsluCounter, 5199 mSDsCounter, 0 mSdLazyCounter, 3880 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20036 SdHoareTripleChecker+Valid, 5509 SdHoareTripleChecker+Invalid, 3940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 3880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:15:10,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20036 Valid, 5509 Invalid, 3940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 3880 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-25 23:15:10,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153401 states. [2023-12-25 23:15:11,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153401 to 37638. [2023-12-25 23:15:11,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37638 states, 37637 states have (on average 1.4816005526476606) internal successors, (55763), 37637 states have internal predecessors, (55763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:15:11,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37638 states to 37638 states and 55763 transitions. [2023-12-25 23:15:11,535 INFO L78 Accepts]: Start accepts. Automaton has 37638 states and 55763 transitions. Word has length 314 [2023-12-25 23:15:11,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:15:11,535 INFO L495 AbstractCegarLoop]: Abstraction has 37638 states and 55763 transitions. [2023-12-25 23:15:11,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 22.105263157894736) internal successors, (840), 37 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:15:11,536 INFO L276 IsEmpty]: Start isEmpty. Operand 37638 states and 55763 transitions. [2023-12-25 23:15:11,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-12-25 23:15:11,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:15:11,562 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:15:11,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-25 23:15:11,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:15:11,779 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:15:11,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:15:11,780 INFO L85 PathProgramCache]: Analyzing trace with hash -46229429, now seen corresponding path program 1 times [2023-12-25 23:15:11,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:15:11,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875699041] [2023-12-25 23:15:11,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:15:11,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:15:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:15:15,869 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 87 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-25 23:15:15,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:15:15,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875699041] [2023-12-25 23:15:15,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875699041] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:15:15,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18286716] [2023-12-25 23:15:15,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:15:15,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:15:15,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:15:15,870 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:15:15,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-25 23:15:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:15:16,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 2818 conjuncts, 98 conjunts are in the unsatisfiable core [2023-12-25 23:15:16,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:15:17,897 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 100 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:15:17,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:15:51,722 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 101 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:15:51,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18286716] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:15:51,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:15:51,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 17, 15] total 35 [2023-12-25 23:15:51,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197758061] [2023-12-25 23:15:51,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:15:51,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-25 23:15:51,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:15:51,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-25 23:15:51,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1052, Unknown=6, NotChecked=0, Total=1260 [2023-12-25 23:15:51,725 INFO L87 Difference]: Start difference. First operand 37638 states and 55763 transitions. Second operand has 36 states, 36 states have (on average 20.38888888888889) internal successors, (734), 35 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:16:12,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:16:12,396 INFO L93 Difference]: Finished difference Result 230504 states and 345535 transitions. [2023-12-25 23:16:12,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2023-12-25 23:16:12,396 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 20.38888888888889) internal successors, (734), 35 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 315 [2023-12-25 23:16:12,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:16:12,557 INFO L225 Difference]: With dead ends: 230504 [2023-12-25 23:16:12,558 INFO L226 Difference]: Without dead ends: 193369 [2023-12-25 23:16:12,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 749 GetRequests, 600 SyntacticMatches, 1 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7633 ImplicationChecksByTransitivity, 36.6s TimeCoverageRelationStatistics Valid=3169, Invalid=19175, Unknown=6, NotChecked=0, Total=22350 [2023-12-25 23:16:12,585 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 12802 mSDsluCounter, 8516 mSDsCounter, 0 mSdLazyCounter, 5694 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12802 SdHoareTripleChecker+Valid, 8986 SdHoareTripleChecker+Invalid, 5751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 5694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-12-25 23:16:12,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12802 Valid, 8986 Invalid, 5751 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 5694 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-12-25 23:16:12,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193369 states. [2023-12-25 23:16:13,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193369 to 58320. [2023-12-25 23:16:14,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58320 states, 58319 states have (on average 1.4789348239853222) internal successors, (86250), 58319 states have internal predecessors, (86250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:16:14,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58320 states to 58320 states and 86250 transitions. [2023-12-25 23:16:14,099 INFO L78 Accepts]: Start accepts. Automaton has 58320 states and 86250 transitions. Word has length 315 [2023-12-25 23:16:14,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:16:14,099 INFO L495 AbstractCegarLoop]: Abstraction has 58320 states and 86250 transitions. [2023-12-25 23:16:14,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 20.38888888888889) internal successors, (734), 35 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:16:14,100 INFO L276 IsEmpty]: Start isEmpty. Operand 58320 states and 86250 transitions. [2023-12-25 23:16:14,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-12-25 23:16:14,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:16:14,134 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:16:14,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-25 23:16:14,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:16:14,335 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:16:14,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:16:14,335 INFO L85 PathProgramCache]: Analyzing trace with hash -16902585, now seen corresponding path program 1 times [2023-12-25 23:16:14,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:16:14,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951495101] [2023-12-25 23:16:14,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:16:14,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:16:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:16:21,459 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 82 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:16:21,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:16:21,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951495101] [2023-12-25 23:16:21,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951495101] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:16:21,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60888776] [2023-12-25 23:16:21,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:16:21,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:16:21,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:16:21,460 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:16:21,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-25 23:16:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:16:22,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 2820 conjuncts, 97 conjunts are in the unsatisfiable core [2023-12-25 23:16:22,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:16:23,820 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 123 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:16:23,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:16:25,492 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 118 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:16:25,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60888776] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:16:25,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:16:25,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 18] total 47 [2023-12-25 23:16:25,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81202638] [2023-12-25 23:16:25,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:16:25,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-25 23:16:25,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:16:25,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-25 23:16:25,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=2046, Unknown=0, NotChecked=0, Total=2256 [2023-12-25 23:16:25,495 INFO L87 Difference]: Start difference. First operand 58320 states and 86250 transitions. Second operand has 48 states, 48 states have (on average 16.25) internal successors, (780), 47 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:16:37,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:16:37,351 INFO L93 Difference]: Finished difference Result 326431 states and 486838 transitions. [2023-12-25 23:16:37,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-25 23:16:37,351 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 16.25) internal successors, (780), 47 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 315 [2023-12-25 23:16:37,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:16:37,617 INFO L225 Difference]: With dead ends: 326431 [2023-12-25 23:16:37,617 INFO L226 Difference]: Without dead ends: 274595 [2023-12-25 23:16:37,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 597 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2476 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1927, Invalid=8785, Unknown=0, NotChecked=0, Total=10712 [2023-12-25 23:16:37,693 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 11875 mSDsluCounter, 18987 mSDsCounter, 0 mSdLazyCounter, 10163 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11875 SdHoareTripleChecker+Valid, 19620 SdHoareTripleChecker+Invalid, 10202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 10163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-25 23:16:37,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11875 Valid, 19620 Invalid, 10202 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [39 Valid, 10163 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-25 23:16:38,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274595 states. [2023-12-25 23:16:40,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274595 to 85953. [2023-12-25 23:16:40,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85953 states, 85952 states have (on average 1.4839910647803425) internal successors, (127552), 85952 states have internal predecessors, (127552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:16:40,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85953 states to 85953 states and 127552 transitions. [2023-12-25 23:16:40,483 INFO L78 Accepts]: Start accepts. Automaton has 85953 states and 127552 transitions. Word has length 315 [2023-12-25 23:16:40,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:16:40,483 INFO L495 AbstractCegarLoop]: Abstraction has 85953 states and 127552 transitions. [2023-12-25 23:16:40,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 16.25) internal successors, (780), 47 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:16:40,483 INFO L276 IsEmpty]: Start isEmpty. Operand 85953 states and 127552 transitions. [2023-12-25 23:16:40,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-12-25 23:16:40,539 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:16:40,539 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:16:40,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-25 23:16:40,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:16:40,740 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:16:40,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:16:40,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1079788361, now seen corresponding path program 1 times [2023-12-25 23:16:40,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:16:40,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18192855] [2023-12-25 23:16:40,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:16:40,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:16:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:16:45,461 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 133 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 23:16:45,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:16:45,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18192855] [2023-12-25 23:16:45,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18192855] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:16:45,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975701163] [2023-12-25 23:16:45,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:16:45,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:16:45,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:16:45,463 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:16:45,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-25 23:16:46,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:16:46,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 2820 conjuncts, 212 conjunts are in the unsatisfiable core [2023-12-25 23:16:46,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:16:50,384 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 8 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:16:50,384 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:16:57,436 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 8 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:16:57,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975701163] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:16:57,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:16:57,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 41, 31] total 82 [2023-12-25 23:16:57,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014797857] [2023-12-25 23:16:57,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:16:57,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2023-12-25 23:16:57,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:16:57,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2023-12-25 23:16:57,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=584, Invalid=6222, Unknown=0, NotChecked=0, Total=6806 [2023-12-25 23:16:57,439 INFO L87 Difference]: Start difference. First operand 85953 states and 127552 transitions. Second operand has 83 states, 83 states have (on average 11.216867469879517) internal successors, (931), 82 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-25 23:19:54,312 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 23:19:54,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 721 states. [2023-12-25 23:19:54,329 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 23:19:54,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1359 GetRequests, 559 SyntacticMatches, 0 SemanticMatches, 799 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299689 ImplicationChecksByTransitivity, 105.0s TimeCoverageRelationStatistics Valid=64997, Invalid=575803, Unknown=0, NotChecked=0, Total=640800 [2023-12-25 23:19:54,379 INFO L413 NwaCegarLoop]: 2803 mSDtfsCounter, 59054 mSDsluCounter, 115177 mSDsCounter, 0 mSdLazyCounter, 47080 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59054 SdHoareTripleChecker+Valid, 117980 SdHoareTripleChecker+Invalid, 47301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 47080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.8s IncrementalHoareTripleChecker+Time [2023-12-25 23:19:54,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59054 Valid, 117980 Invalid, 47301 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [221 Valid, 47080 Invalid, 0 Unknown, 0 Unchecked, 41.8s Time] [2023-12-25 23:19:54,381 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 23:19:54,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-25 23:19:54,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2023-12-25 23:19:54,594 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (85953states) and FLOYD_HOARE automaton (currently 721 states, 83 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 801 known predicates. [2023-12-25 23:19:54,598 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:19:54,601 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 23:19:54,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 11:19:54 BoogieIcfgContainer [2023-12-25 23:19:54,602 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 23:19:54,602 INFO L158 Benchmark]: Toolchain (without parser) took 759229.43ms. Allocated memory was 198.2MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 152.7MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2023-12-25 23:19:54,602 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 198.2MB. Free memory is still 156.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 23:19:54,603 INFO L158 Benchmark]: CACSL2BoogieTranslator took 500.06ms. Allocated memory is still 198.2MB. Free memory was 152.3MB in the beginning and 119.8MB in the end (delta: 32.5MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2023-12-25 23:19:54,603 INFO L158 Benchmark]: Boogie Procedure Inliner took 217.76ms. Allocated memory is still 198.2MB. Free memory was 119.8MB in the beginning and 156.6MB in the end (delta: -36.8MB). Peak memory consumption was 43.8MB. Max. memory is 8.0GB. [2023-12-25 23:19:54,603 INFO L158 Benchmark]: Boogie Preprocessor took 280.68ms. Allocated memory was 198.2MB in the beginning and 264.2MB in the end (delta: 66.1MB). Free memory was 156.6MB in the beginning and 210.5MB in the end (delta: -53.9MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-12-25 23:19:54,603 INFO L158 Benchmark]: RCFGBuilder took 1308.35ms. Allocated memory is still 264.2MB. Free memory was 210.5MB in the beginning and 160.2MB in the end (delta: 50.3MB). Peak memory consumption was 54.0MB. Max. memory is 8.0GB. [2023-12-25 23:19:54,603 INFO L158 Benchmark]: TraceAbstraction took 756917.77ms. Allocated memory was 264.2MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 159.7MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2023-12-25 23:19:54,604 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 198.2MB. Free memory is still 156.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 500.06ms. Allocated memory is still 198.2MB. Free memory was 152.3MB in the beginning and 119.8MB in the end (delta: 32.5MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 217.76ms. Allocated memory is still 198.2MB. Free memory was 119.8MB in the beginning and 156.6MB in the end (delta: -36.8MB). Peak memory consumption was 43.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 280.68ms. Allocated memory was 198.2MB in the beginning and 264.2MB in the end (delta: 66.1MB). Free memory was 156.6MB in the beginning and 210.5MB in the end (delta: -53.9MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * RCFGBuilder took 1308.35ms. Allocated memory is still 264.2MB. Free memory was 210.5MB in the beginning and 160.2MB in the end (delta: 50.3MB). Peak memory consumption was 54.0MB. Max. memory is 8.0GB. * TraceAbstraction took 756917.77ms. Allocated memory was 264.2MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 159.7MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was constructing difference of abstraction (85953states) and FLOYD_HOARE automaton (currently 721 states, 83 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 801 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 260 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 756.9s, OverallIterations: 55, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 525.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 572041 SdHoareTripleChecker+Valid, 122.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 572041 mSDsluCounter, 455533 SdHoareTripleChecker+Invalid, 106.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 427271 mSDsCounter, 1891 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 176702 IncrementalHoareTripleChecker+Invalid, 178593 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1891 mSolverCounterUnsat, 28262 mSDtfsCounter, 176702 mSolverCounterSat, 1.7s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13697 GetRequests, 8288 SyntacticMatches, 43 SemanticMatches, 5365 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1283965 ImplicationChecksByTransitivity, 367.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85953occurred in iteration=54, InterpolantAutomatonStates: 3805, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 16.1s AutomataMinimizationTime, 54 MinimizatonAttempts, 1051701 StatesRemovedByMinimization, 51 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.5s SsaConstructionTime, 39.0s SatisfiabilityAnalysisTime, 165.9s InterpolantComputationTime, 15463 NumberOfCodeBlocks, 15463 NumberOfCodeBlocksAsserted, 75 NumberOfCheckSat, 19603 ConstructedInterpolants, 142 QuantifiedInterpolants, 236325 SizeOfPredicates, 763 NumberOfNonLiveVariables, 38817 ConjunctsInSsa, 1880 ConjunctsInUnsatCore, 93 InterpolantComputations, 37 PerfectInterpolantSequences, 2470/3862 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown [2023-12-25 23:19:54,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 !ENTRY org.eclipse.osgi 4 0 2023-12-25 23:19:54.835 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb67bbeb3/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:190) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) An error has occurred. See the log file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb67bbeb3/.metadata/.log.