/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.cambridge.4.prop2-back-serstep.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 16:56:04,722 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 16:56:04,788 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 16:56:04,794 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 16:56:04,794 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 16:56:04,816 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 16:56:04,816 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 16:56:04,816 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 16:56:04,817 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 16:56:04,820 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 16:56:04,820 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 16:56:04,820 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 16:56:04,821 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 16:56:04,822 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 16:56:04,822 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 16:56:04,822 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 16:56:04,822 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 16:56:04,822 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-25 16:56:04,822 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 16:56:04,822 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 16:56:04,823 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 16:56:04,824 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 16:56:04,824 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 16:56:04,824 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 16:56:04,824 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 16:56:04,824 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 16:56:04,825 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 16:56:04,825 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 16:56:04,825 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 16:56:04,825 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 16:56:04,826 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 16:56:04,826 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 16:56:04,826 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 16:56:04,826 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-25 16:56:04,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-25 16:56:04,826 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 16:56:04,826 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 16:56:04,826 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 16:56:04,826 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 16:56:04,827 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 16:56:04,827 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-25 16:56:05,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 16:56:05,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 16:56:05,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 16:56:05,029 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 16:56:05,032 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 16:56:05,033 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.cambridge.4.prop2-back-serstep.c [2023-12-25 16:56:06,003 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 16:56:06,324 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 16:56:06,325 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.cambridge.4.prop2-back-serstep.c [2023-12-25 16:56:06,353 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a719862f9/56babc5da61b4dda87c9c2514a9f2b84/FLAG513becd65 [2023-12-25 16:56:06,367 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a719862f9/56babc5da61b4dda87c9c2514a9f2b84 [2023-12-25 16:56:06,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 16:56:06,371 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 16:56:06,373 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 16:56:06,373 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 16:56:06,376 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 16:56:06,377 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 04:56:06" (1/1) ... [2023-12-25 16:56:06,378 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61aed8d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:56:06, skipping insertion in model container [2023-12-25 16:56:06,378 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 04:56:06" (1/1) ... [2023-12-25 16:56:06,460 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 16:56:06,641 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.cambridge.4.prop2-back-serstep.c[1177,1190] [2023-12-25 16:56:07,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 16:56:07,197 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 16:56:07,204 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.cambridge.4.prop2-back-serstep.c[1177,1190] [2023-12-25 16:56:07,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 16:56:07,573 INFO L206 MainTranslator]: Completed translation [2023-12-25 16:56:07,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:56:07 WrapperNode [2023-12-25 16:56:07,574 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 16:56:07,575 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 16:56:07,575 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 16:56:07,575 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 16:56:07,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:56:07" (1/1) ... [2023-12-25 16:56:07,695 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:56:07" (1/1) ... [2023-12-25 16:56:08,910 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21124 [2023-12-25 16:56:08,910 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 16:56:08,911 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 16:56:08,911 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 16:56:08,911 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 16:56:08,918 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:56:07" (1/1) ... [2023-12-25 16:56:08,918 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:56:07" (1/1) ... [2023-12-25 16:56:09,271 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:56:07" (1/1) ... [2023-12-25 16:56:09,506 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 16:56:09,507 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:56:07" (1/1) ... [2023-12-25 16:56:09,507 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:56:07" (1/1) ... [2023-12-25 16:56:09,873 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:56:07" (1/1) ... [2023-12-25 16:56:09,944 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:56:07" (1/1) ... [2023-12-25 16:56:10,021 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:56:07" (1/1) ... [2023-12-25 16:56:10,150 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:56:07" (1/1) ... [2023-12-25 16:56:10,412 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 16:56:10,412 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 16:56:10,412 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 16:56:10,413 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 16:56:10,413 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:56:07" (1/1) ... [2023-12-25 16:56:10,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 16:56:10,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 16:56:10,433 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 16:56:10,436 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 16:56:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 16:56:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-25 16:56:10,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 16:56:10,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 16:56:11,342 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 16:56:11,343 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 16:56:18,849 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 16:56:19,098 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 16:56:19,098 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 16:56:19,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 04:56:19 BoogieIcfgContainer [2023-12-25 16:56:19,099 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 16:56:19,101 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 16:56:19,101 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 16:56:19,103 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 16:56:19,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 04:56:06" (1/3) ... [2023-12-25 16:56:19,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d4e97e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 04:56:19, skipping insertion in model container [2023-12-25 16:56:19,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:56:07" (2/3) ... [2023-12-25 16:56:19,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d4e97e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 04:56:19, skipping insertion in model container [2023-12-25 16:56:19,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 04:56:19" (3/3) ... [2023-12-25 16:56:19,104 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cambridge.4.prop2-back-serstep.c [2023-12-25 16:56:19,116 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 16:56:19,116 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 16:56:19,319 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 16:56:19,323 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;@680ae31c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 16:56:19,323 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 16:56:19,334 INFO L276 IsEmpty]: Start isEmpty. Operand has 4803 states, 4801 states have (on average 1.6723599250156218) internal successors, (8029), 4802 states have internal predecessors, (8029), 0 states have call successors, (0), 0 states 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 16:56:19,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2023-12-25 16:56:19,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:56:19,350 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:56:19,350 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:56:19,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:56:19,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1175731362, now seen corresponding path program 1 times [2023-12-25 16:56:19,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:56:19,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979031883] [2023-12-25 16:56:19,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:56:19,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:56:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:56:20,623 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 16:56:20,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:56:20,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979031883] [2023-12-25 16:56:20,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979031883] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 16:56:20,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 16:56:20,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 16:56:20,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655492967] [2023-12-25 16:56:20,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:56:20,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 16:56:20,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:56:20,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 16:56:20,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 16:56:20,661 INFO L87 Difference]: Start difference. First operand has 4803 states, 4801 states have (on average 1.6723599250156218) internal successors, (8029), 4802 states have internal predecessors, (8029), 0 states have call successors, (0), 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 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 16:56:20,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 16:56:20,837 INFO L93 Difference]: Finished difference Result 9470 states and 15834 transitions. [2023-12-25 16:56:20,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 16:56:20,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 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 400 [2023-12-25 16:56:20,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 16:56:20,860 INFO L225 Difference]: With dead ends: 9470 [2023-12-25 16:56:20,860 INFO L226 Difference]: Without dead ends: 4803 [2023-12-25 16:56:20,869 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 16:56:20,871 INFO L413 NwaCegarLoop]: 8022 mSDtfsCounter, 1 mSDsluCounter, 16039 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 24061 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 16:56:20,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 24061 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 16:56:20,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4803 states. [2023-12-25 16:56:20,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4803 to 4803. [2023-12-25 16:56:20,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4803 states, 4802 states have (on average 1.6715951686797168) internal successors, (8027), 4802 states have internal predecessors, (8027), 0 states have call successors, (0), 0 states 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 16:56:20,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4803 states to 4803 states and 8027 transitions. [2023-12-25 16:56:20,970 INFO L78 Accepts]: Start accepts. Automaton has 4803 states and 8027 transitions. Word has length 400 [2023-12-25 16:56:20,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 16:56:20,971 INFO L495 AbstractCegarLoop]: Abstraction has 4803 states and 8027 transitions. [2023-12-25 16:56:20,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 16:56:20,971 INFO L276 IsEmpty]: Start isEmpty. Operand 4803 states and 8027 transitions. [2023-12-25 16:56:20,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2023-12-25 16:56:20,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:56:20,975 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:56:20,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-25 16:56:20,976 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:56:20,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:56:20,976 INFO L85 PathProgramCache]: Analyzing trace with hash -2086146948, now seen corresponding path program 1 times [2023-12-25 16:56:20,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:56:20,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518116809] [2023-12-25 16:56:20,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:56:20,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:56:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:56:21,601 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 16:56:21,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:56:21,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518116809] [2023-12-25 16:56:21,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518116809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 16:56:21,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 16:56:21,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 16:56:21,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018087310] [2023-12-25 16:56:21,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:56:21,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 16:56:21,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:56:21,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 16:56:21,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 16:56:21,608 INFO L87 Difference]: Start difference. First operand 4803 states and 8027 transitions. Second operand has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states 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 16:56:21,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 16:56:21,732 INFO L93 Difference]: Finished difference Result 9473 states and 15832 transitions. [2023-12-25 16:56:21,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 16:56:21,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 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 401 [2023-12-25 16:56:21,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 16:56:21,745 INFO L225 Difference]: With dead ends: 9473 [2023-12-25 16:56:21,746 INFO L226 Difference]: Without dead ends: 4806 [2023-12-25 16:56:21,753 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 16:56:21,754 INFO L413 NwaCegarLoop]: 8022 mSDtfsCounter, 1 mSDsluCounter, 16037 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 24059 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 16:56:21,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 24059 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 16:56:21,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4806 states. [2023-12-25 16:56:21,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4806 to 4805. [2023-12-25 16:56:21,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4805 states, 4804 states have (on average 1.671315570358035) internal successors, (8029), 4804 states have internal predecessors, (8029), 0 states have call successors, (0), 0 states 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 16:56:21,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4805 states to 4805 states and 8029 transitions. [2023-12-25 16:56:21,815 INFO L78 Accepts]: Start accepts. Automaton has 4805 states and 8029 transitions. Word has length 401 [2023-12-25 16:56:21,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 16:56:21,816 INFO L495 AbstractCegarLoop]: Abstraction has 4805 states and 8029 transitions. [2023-12-25 16:56:21,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states 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 16:56:21,816 INFO L276 IsEmpty]: Start isEmpty. Operand 4805 states and 8029 transitions. [2023-12-25 16:56:21,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2023-12-25 16:56:21,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:56:21,820 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:56:21,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-25 16:56:21,820 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:56:21,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:56:21,826 INFO L85 PathProgramCache]: Analyzing trace with hash -458263498, now seen corresponding path program 1 times [2023-12-25 16:56:21,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:56:21,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435381645] [2023-12-25 16:56:21,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:56:21,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:56:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:56:22,420 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 16:56:22,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:56:22,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435381645] [2023-12-25 16:56:22,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435381645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 16:56:22,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 16:56:22,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 16:56:22,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664171618] [2023-12-25 16:56:22,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:56:22,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 16:56:22,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:56:22,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 16:56:22,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 16:56:22,426 INFO L87 Difference]: Start difference. First operand 4805 states and 8029 transitions. Second operand has 5 states, 5 states have (on average 80.4) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states 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 16:56:22,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 16:56:22,843 INFO L93 Difference]: Finished difference Result 14589 states and 24380 transitions. [2023-12-25 16:56:22,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 16:56:22,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 80.4) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 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 402 [2023-12-25 16:56:22,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 16:56:22,870 INFO L225 Difference]: With dead ends: 14589 [2023-12-25 16:56:22,870 INFO L226 Difference]: Without dead ends: 9920 [2023-12-25 16:56:22,878 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 16:56:22,879 INFO L413 NwaCegarLoop]: 8776 mSDtfsCounter, 31760 mSDsluCounter, 16038 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31760 SdHoareTripleChecker+Valid, 24814 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 16:56:22,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31760 Valid, 24814 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 16:56:22,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9920 states. [2023-12-25 16:56:22,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9920 to 5260. [2023-12-25 16:56:22,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5260 states, 5259 states have (on average 1.6706598212587944) internal successors, (8786), 5259 states have internal predecessors, (8786), 0 states have call successors, (0), 0 states 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 16:56:23,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5260 states to 5260 states and 8786 transitions. [2023-12-25 16:56:23,012 INFO L78 Accepts]: Start accepts. Automaton has 5260 states and 8786 transitions. Word has length 402 [2023-12-25 16:56:23,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 16:56:23,013 INFO L495 AbstractCegarLoop]: Abstraction has 5260 states and 8786 transitions. [2023-12-25 16:56:23,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.4) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states 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 16:56:23,015 INFO L276 IsEmpty]: Start isEmpty. Operand 5260 states and 8786 transitions. [2023-12-25 16:56:23,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3376 [2023-12-25 16:56:23,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:56:23,142 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:56:23,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-25 16:56:23,142 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:56:23,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:56:23,143 INFO L85 PathProgramCache]: Analyzing trace with hash -828511364, now seen corresponding path program 1 times [2023-12-25 16:56:23,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:56:23,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181334788] [2023-12-25 16:56:23,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:56:23,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:56:23,468 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 16:56:23,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [498536506] [2023-12-25 16:56:23,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:56:23,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:56:23,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 16:56:23,481 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 16:56:23,486 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 16:56:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:56:27,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 16741 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 16:56:27,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 16:56:27,864 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 16:56:27,864 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 16:56:27,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:56:27,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181334788] [2023-12-25 16:56:27,864 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 16:56:27,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498536506] [2023-12-25 16:56:27,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498536506] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 16:56:27,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 16:56:27,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 16:56:27,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332366522] [2023-12-25 16:56:27,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:56:27,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 16:56:27,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:56:27,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 16:56:27,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 16:56:27,871 INFO L87 Difference]: Start difference. First operand 5260 states and 8786 transitions. Second operand has 4 states, 4 states have (on average 843.75) internal successors, (3375), 4 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states 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 16:56:27,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 16:56:27,988 INFO L93 Difference]: Finished difference Result 9939 states and 16605 transitions. [2023-12-25 16:56:27,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 16:56:27,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 843.75) internal successors, (3375), 4 states have internal predecessors, (3375), 0 states have call successors, (0), 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 3375 [2023-12-25 16:56:27,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 16:56:28,003 INFO L225 Difference]: With dead ends: 9939 [2023-12-25 16:56:28,003 INFO L226 Difference]: Without dead ends: 5270 [2023-12-25 16:56:28,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3374 GetRequests, 3372 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 16:56:28,009 INFO L413 NwaCegarLoop]: 8022 mSDtfsCounter, 12 mSDsluCounter, 16034 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24056 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 16:56:28,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 24056 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 16:56:28,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5270 states. [2023-12-25 16:56:28,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5270 to 5262. [2023-12-25 16:56:28,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5262 states, 5261 states have (on average 1.6704048659950579) internal successors, (8788), 5261 states have internal predecessors, (8788), 0 states have call successors, (0), 0 states 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 16:56:28,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5262 states to 5262 states and 8788 transitions. [2023-12-25 16:56:28,077 INFO L78 Accepts]: Start accepts. Automaton has 5262 states and 8788 transitions. Word has length 3375 [2023-12-25 16:56:28,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 16:56:28,089 INFO L495 AbstractCegarLoop]: Abstraction has 5262 states and 8788 transitions. [2023-12-25 16:56:28,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 843.75) internal successors, (3375), 4 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states 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 16:56:28,090 INFO L276 IsEmpty]: Start isEmpty. Operand 5262 states and 8788 transitions. [2023-12-25 16:56:28,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3376 [2023-12-25 16:56:28,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:56:28,151 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:56:28,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-25 16:56:28,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:56:28,364 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:56:28,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:56:28,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1547076462, now seen corresponding path program 1 times [2023-12-25 16:56:28,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:56:28,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993600031] [2023-12-25 16:56:28,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:56:28,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:56:28,635 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 16:56:28,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1865587454] [2023-12-25 16:56:28,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:56:28,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:56:28,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 16:56:28,637 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 16:56:28,660 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 16:56:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:56:32,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 16742 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 16:56:32,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 16:56:32,413 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 16:56:32,413 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 16:56:32,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:56:32,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993600031] [2023-12-25 16:56:32,414 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 16:56:32,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865587454] [2023-12-25 16:56:32,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865587454] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 16:56:32,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 16:56:32,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 16:56:32,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535272470] [2023-12-25 16:56:32,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:56:32,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 16:56:32,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:56:32,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 16:56:32,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 16:56:32,420 INFO L87 Difference]: Start difference. First operand 5262 states and 8788 transitions. Second operand has 4 states, 4 states have (on average 843.75) internal successors, (3375), 4 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states 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 16:56:32,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 16:56:32,526 INFO L93 Difference]: Finished difference Result 9942 states and 16607 transitions. [2023-12-25 16:56:32,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 16:56:32,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 843.75) internal successors, (3375), 4 states have internal predecessors, (3375), 0 states have call successors, (0), 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 3375 [2023-12-25 16:56:32,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 16:56:32,552 INFO L225 Difference]: With dead ends: 9942 [2023-12-25 16:56:32,552 INFO L226 Difference]: Without dead ends: 5271 [2023-12-25 16:56:32,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3374 GetRequests, 3372 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 16:56:32,558 INFO L413 NwaCegarLoop]: 8022 mSDtfsCounter, 12 mSDsluCounter, 16034 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24056 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 16:56:32,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 24056 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 16:56:32,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5271 states. [2023-12-25 16:56:32,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5271 to 5263. [2023-12-25 16:56:32,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 5262 states have (on average 1.670277461041429) internal successors, (8789), 5262 states have internal predecessors, (8789), 0 states have call successors, (0), 0 states 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 16:56:32,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 8789 transitions. [2023-12-25 16:56:32,625 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 8789 transitions. Word has length 3375 [2023-12-25 16:56:32,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 16:56:32,626 INFO L495 AbstractCegarLoop]: Abstraction has 5263 states and 8789 transitions. [2023-12-25 16:56:32,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 843.75) internal successors, (3375), 4 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states 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 16:56:32,628 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 8789 transitions. [2023-12-25 16:56:32,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3376 [2023-12-25 16:56:32,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:56:32,690 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:56:32,734 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 16:56:32,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:56:32,891 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:56:32,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:56:32,892 INFO L85 PathProgramCache]: Analyzing trace with hash -373173920, now seen corresponding path program 1 times [2023-12-25 16:56:32,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:56:32,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071688507] [2023-12-25 16:56:32,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:56:32,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:56:33,157 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 16:56:33,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1188210561] [2023-12-25 16:56:33,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:56:33,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:56:33,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 16:56:33,163 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 16:56:33,187 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 16:56:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:56:36,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 16743 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 16:56:36,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 16:56:36,996 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 16:56:36,996 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 16:56:36,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:56:36,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071688507] [2023-12-25 16:56:36,996 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 16:56:36,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188210561] [2023-12-25 16:56:36,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188210561] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 16:56:36,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 16:56:36,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 16:56:36,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995462053] [2023-12-25 16:56:36,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:56:37,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 16:56:37,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:56:37,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 16:56:37,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 16:56:37,004 INFO L87 Difference]: Start difference. First operand 5263 states and 8789 transitions. Second operand has 4 states, 4 states have (on average 843.75) internal successors, (3375), 4 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states 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 16:56:37,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 16:56:37,106 INFO L93 Difference]: Finished difference Result 9944 states and 16609 transitions. [2023-12-25 16:56:37,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 16:56:37,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 843.75) internal successors, (3375), 4 states have internal predecessors, (3375), 0 states have call successors, (0), 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 3375 [2023-12-25 16:56:37,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 16:56:37,115 INFO L225 Difference]: With dead ends: 9944 [2023-12-25 16:56:37,115 INFO L226 Difference]: Without dead ends: 5272 [2023-12-25 16:56:37,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3374 GetRequests, 3372 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 16:56:37,121 INFO L413 NwaCegarLoop]: 8022 mSDtfsCounter, 12 mSDsluCounter, 16034 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24056 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 16:56:37,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 24056 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 16:56:37,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5272 states. [2023-12-25 16:56:37,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5272 to 5264. [2023-12-25 16:56:37,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5264 states, 5263 states have (on average 1.670150104503135) internal successors, (8790), 5263 states have internal predecessors, (8790), 0 states have call successors, (0), 0 states 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 16:56:37,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5264 states to 5264 states and 8790 transitions. [2023-12-25 16:56:37,204 INFO L78 Accepts]: Start accepts. Automaton has 5264 states and 8790 transitions. Word has length 3375 [2023-12-25 16:56:37,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 16:56:37,206 INFO L495 AbstractCegarLoop]: Abstraction has 5264 states and 8790 transitions. [2023-12-25 16:56:37,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 843.75) internal successors, (3375), 4 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states 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 16:56:37,208 INFO L276 IsEmpty]: Start isEmpty. Operand 5264 states and 8790 transitions. [2023-12-25 16:56:37,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3376 [2023-12-25 16:56:37,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:56:37,279 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:56:37,355 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 16:56:37,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:56:37,493 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:56:37,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:56:37,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1872485714, now seen corresponding path program 1 times [2023-12-25 16:56:37,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:56:37,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739190174] [2023-12-25 16:56:37,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:56:37,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:56:37,719 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 16:56:37,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1359461071] [2023-12-25 16:56:37,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:56:37,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:56:37,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 16:56:37,721 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 16:56:37,746 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 16:56:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:56:41,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 16744 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 16:56:41,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 16:56:41,428 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 16:56:41,428 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 16:56:41,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:56:41,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739190174] [2023-12-25 16:56:41,429 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 16:56:41,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359461071] [2023-12-25 16:56:41,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359461071] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 16:56:41,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 16:56:41,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 16:56:41,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672882934] [2023-12-25 16:56:41,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:56:41,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 16:56:41,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:56:41,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 16:56:41,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 16:56:41,435 INFO L87 Difference]: Start difference. First operand 5264 states and 8790 transitions. Second operand has 4 states, 4 states have (on average 843.75) internal successors, (3375), 4 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states 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 16:56:41,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 16:56:41,548 INFO L93 Difference]: Finished difference Result 9946 states and 16611 transitions. [2023-12-25 16:56:41,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 16:56:41,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 843.75) internal successors, (3375), 4 states have internal predecessors, (3375), 0 states have call successors, (0), 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 3375 [2023-12-25 16:56:41,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 16:56:41,577 INFO L225 Difference]: With dead ends: 9946 [2023-12-25 16:56:41,577 INFO L226 Difference]: Without dead ends: 5273 [2023-12-25 16:56:41,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3374 GetRequests, 3372 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 16:56:41,584 INFO L413 NwaCegarLoop]: 8022 mSDtfsCounter, 12 mSDsluCounter, 16034 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24056 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 16:56:41,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 24056 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 16:56:41,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5273 states. [2023-12-25 16:56:41,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5273 to 5265. [2023-12-25 16:56:41,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5265 states, 5264 states have (on average 1.6700227963525835) internal successors, (8791), 5264 states have internal predecessors, (8791), 0 states have call successors, (0), 0 states 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 16:56:41,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5265 states to 5265 states and 8791 transitions. [2023-12-25 16:56:41,636 INFO L78 Accepts]: Start accepts. Automaton has 5265 states and 8791 transitions. Word has length 3375 [2023-12-25 16:56:41,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 16:56:41,638 INFO L495 AbstractCegarLoop]: Abstraction has 5265 states and 8791 transitions. [2023-12-25 16:56:41,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 843.75) internal successors, (3375), 4 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states 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 16:56:41,639 INFO L276 IsEmpty]: Start isEmpty. Operand 5265 states and 8791 transitions. [2023-12-25 16:56:41,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3376 [2023-12-25 16:56:41,699 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:56:41,700 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:56:41,747 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 16:56:41,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:56:41,928 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:56:41,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:56:41,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1685789372, now seen corresponding path program 1 times [2023-12-25 16:56:41,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:56:41,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032196509] [2023-12-25 16:56:41,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:56:41,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:56:42,179 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 16:56:42,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1620703824] [2023-12-25 16:56:42,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:56:42,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:56:42,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 16:56:42,181 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 16:56:42,200 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 16:56:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:56:45,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 16745 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 16:56:45,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 16:56:45,759 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 16:56:45,759 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 16:56:45,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:56:45,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032196509] [2023-12-25 16:56:45,759 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 16:56:45,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620703824] [2023-12-25 16:56:45,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620703824] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 16:56:45,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 16:56:45,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 16:56:45,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313611009] [2023-12-25 16:56:45,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:56:45,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 16:56:45,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:56:45,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 16:56:45,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 16:56:45,765 INFO L87 Difference]: Start difference. First operand 5265 states and 8791 transitions. Second operand has 4 states, 4 states have (on average 843.75) internal successors, (3375), 4 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states 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 16:56:45,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 16:56:45,878 INFO L93 Difference]: Finished difference Result 9948 states and 16613 transitions. [2023-12-25 16:56:45,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 16:56:45,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 843.75) internal successors, (3375), 4 states have internal predecessors, (3375), 0 states have call successors, (0), 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 3375 [2023-12-25 16:56:45,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 16:56:45,888 INFO L225 Difference]: With dead ends: 9948 [2023-12-25 16:56:45,888 INFO L226 Difference]: Without dead ends: 5274 [2023-12-25 16:56:45,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3374 GetRequests, 3372 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 16:56:45,893 INFO L413 NwaCegarLoop]: 8022 mSDtfsCounter, 12 mSDsluCounter, 16034 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24056 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 16:56:45,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 24056 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 16:56:45,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5274 states. [2023-12-25 16:56:45,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5274 to 5266. [2023-12-25 16:56:45,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5266 states, 5265 states have (on average 1.6698955365622032) internal successors, (8792), 5265 states have internal predecessors, (8792), 0 states have call successors, (0), 0 states 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 16:56:45,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5266 states to 5266 states and 8792 transitions. [2023-12-25 16:56:45,941 INFO L78 Accepts]: Start accepts. Automaton has 5266 states and 8792 transitions. Word has length 3375 [2023-12-25 16:56:45,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 16:56:45,943 INFO L495 AbstractCegarLoop]: Abstraction has 5266 states and 8792 transitions. [2023-12-25 16:56:45,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 843.75) internal successors, (3375), 4 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states 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 16:56:45,944 INFO L276 IsEmpty]: Start isEmpty. Operand 5266 states and 8792 transitions. [2023-12-25 16:56:46,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3376 [2023-12-25 16:56:46,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:56:46,006 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:56:46,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-25 16:56:46,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:56:46,211 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:56:46,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:56:46,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1623273582, now seen corresponding path program 1 times [2023-12-25 16:56:46,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:56:46,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130467601] [2023-12-25 16:56:46,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:56:46,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:56:46,451 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 16:56:46,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [277841051] [2023-12-25 16:56:46,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:56:46,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:56:46,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 16:56:46,453 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 16:56:46,454 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 16:56:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:56:49,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 16746 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 16:56:49,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 16:56:49,997 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 16:56:49,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 16:56:49,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:56:49,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130467601] [2023-12-25 16:56:49,998 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 16:56:49,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277841051] [2023-12-25 16:56:49,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277841051] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 16:56:49,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 16:56:49,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 16:56:49,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574349040] [2023-12-25 16:56:49,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:56:50,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 16:56:50,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:56:50,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 16:56:50,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 16:56:50,006 INFO L87 Difference]: Start difference. First operand 5266 states and 8792 transitions. Second operand has 4 states, 4 states have (on average 843.75) internal successors, (3375), 4 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states 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 16:56:50,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 16:56:50,119 INFO L93 Difference]: Finished difference Result 9950 states and 16615 transitions. [2023-12-25 16:56:50,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 16:56:50,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 843.75) internal successors, (3375), 4 states have internal predecessors, (3375), 0 states have call successors, (0), 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 3375 [2023-12-25 16:56:50,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 16:56:50,129 INFO L225 Difference]: With dead ends: 9950 [2023-12-25 16:56:50,129 INFO L226 Difference]: Without dead ends: 5275 [2023-12-25 16:56:50,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3374 GetRequests, 3372 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 16:56:50,135 INFO L413 NwaCegarLoop]: 8022 mSDtfsCounter, 12 mSDsluCounter, 16034 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24056 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 16:56:50,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 24056 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 16:56:50,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5275 states. [2023-12-25 16:56:50,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5275 to 5267. [2023-12-25 16:56:50,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5267 states, 5266 states have (on average 1.6697683251044435) internal successors, (8793), 5266 states have internal predecessors, (8793), 0 states have call successors, (0), 0 states 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 16:56:50,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5267 states to 5267 states and 8793 transitions. [2023-12-25 16:56:50,189 INFO L78 Accepts]: Start accepts. Automaton has 5267 states and 8793 transitions. Word has length 3375 [2023-12-25 16:56:50,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 16:56:50,191 INFO L495 AbstractCegarLoop]: Abstraction has 5267 states and 8793 transitions. [2023-12-25 16:56:50,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 843.75) internal successors, (3375), 4 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states 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 16:56:50,192 INFO L276 IsEmpty]: Start isEmpty. Operand 5267 states and 8793 transitions. [2023-12-25 16:56:50,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3376 [2023-12-25 16:56:50,252 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:56:50,253 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:56:50,303 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 16:56:50,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:56:50,468 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:56:50,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:56:50,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1738758176, now seen corresponding path program 1 times [2023-12-25 16:56:50,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:56:50,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150798126] [2023-12-25 16:56:50,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:56:50,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:56:50,689 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 16:56:50,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1465705781] [2023-12-25 16:56:50,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:56:50,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:56:50,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 16:56:50,691 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 16:56:50,712 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 16:56:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:56:54,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 16747 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 16:56:54,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 16:56:54,406 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 16:56:54,406 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 16:56:54,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:56:54,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150798126] [2023-12-25 16:56:54,406 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 16:56:54,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465705781] [2023-12-25 16:56:54,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465705781] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 16:56:54,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 16:56:54,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 16:56:54,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249858620] [2023-12-25 16:56:54,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:56:54,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 16:56:54,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:56:54,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 16:56:54,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 16:56:54,412 INFO L87 Difference]: Start difference. First operand 5267 states and 8793 transitions. Second operand has 4 states, 4 states have (on average 843.75) internal successors, (3375), 4 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states 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 16:56:54,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 16:56:54,503 INFO L93 Difference]: Finished difference Result 9952 states and 16617 transitions. [2023-12-25 16:56:54,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 16:56:54,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 843.75) internal successors, (3375), 4 states have internal predecessors, (3375), 0 states have call successors, (0), 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 3375 [2023-12-25 16:56:54,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 16:56:54,513 INFO L225 Difference]: With dead ends: 9952 [2023-12-25 16:56:54,513 INFO L226 Difference]: Without dead ends: 5276 [2023-12-25 16:56:54,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3374 GetRequests, 3372 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 16:56:54,517 INFO L413 NwaCegarLoop]: 8022 mSDtfsCounter, 12 mSDsluCounter, 16034 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24056 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 16:56:54,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 24056 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 16:56:54,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5276 states. [2023-12-25 16:56:54,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5276 to 5268. [2023-12-25 16:56:54,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5268 states, 5267 states have (on average 1.6696411619517753) internal successors, (8794), 5267 states have internal predecessors, (8794), 0 states have call successors, (0), 0 states 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 16:56:54,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5268 states to 5268 states and 8794 transitions. [2023-12-25 16:56:54,567 INFO L78 Accepts]: Start accepts. Automaton has 5268 states and 8794 transitions. Word has length 3375 [2023-12-25 16:56:54,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 16:56:54,569 INFO L495 AbstractCegarLoop]: Abstraction has 5268 states and 8794 transitions. [2023-12-25 16:56:54,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 843.75) internal successors, (3375), 4 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states 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 16:56:54,570 INFO L276 IsEmpty]: Start isEmpty. Operand 5268 states and 8794 transitions. [2023-12-25 16:56:54,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3376 [2023-12-25 16:56:54,629 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:56:54,631 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:56:54,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-25 16:56:54,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:56:54,844 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:56:54,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:56:54,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1514947538, now seen corresponding path program 1 times [2023-12-25 16:56:54,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:56:54,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296995844] [2023-12-25 16:56:54,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:56:54,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:56:55,061 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 16:56:55,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1822506228] [2023-12-25 16:56:55,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:56:55,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:56:55,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 16:56:55,063 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 16:56:55,076 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 16:56:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:56:58,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 16748 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 16:56:58,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 16:56:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 16:56:58,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 16:56:58,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:56:58,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296995844] [2023-12-25 16:56:58,612 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 16:56:58,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822506228] [2023-12-25 16:56:58,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822506228] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 16:56:58,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 16:56:58,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 16:56:58,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456808856] [2023-12-25 16:56:58,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:56:58,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 16:56:58,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:56:58,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 16:56:58,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 16:56:58,617 INFO L87 Difference]: Start difference. First operand 5268 states and 8794 transitions. Second operand has 4 states, 4 states have (on average 843.75) internal successors, (3375), 4 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states 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 16:56:58,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 16:56:58,807 INFO L93 Difference]: Finished difference Result 9954 states and 16619 transitions. [2023-12-25 16:56:58,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 16:56:58,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 843.75) internal successors, (3375), 4 states have internal predecessors, (3375), 0 states have call successors, (0), 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 3375 [2023-12-25 16:56:58,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 16:56:58,817 INFO L225 Difference]: With dead ends: 9954 [2023-12-25 16:56:58,817 INFO L226 Difference]: Without dead ends: 5277 [2023-12-25 16:56:58,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3374 GetRequests, 3372 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 16:56:58,823 INFO L413 NwaCegarLoop]: 8022 mSDtfsCounter, 12 mSDsluCounter, 16034 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24056 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 16:56:58,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 24056 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 16:56:58,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5277 states. [2023-12-25 16:56:58,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5277 to 5269. [2023-12-25 16:56:58,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5269 states, 5268 states have (on average 1.6695140470766894) internal successors, (8795), 5268 states have internal predecessors, (8795), 0 states have call successors, (0), 0 states 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 16:56:58,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5269 states to 5269 states and 8795 transitions. [2023-12-25 16:56:58,873 INFO L78 Accepts]: Start accepts. Automaton has 5269 states and 8795 transitions. Word has length 3375 [2023-12-25 16:56:58,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 16:56:58,876 INFO L495 AbstractCegarLoop]: Abstraction has 5269 states and 8795 transitions. [2023-12-25 16:56:58,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 843.75) internal successors, (3375), 4 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states 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 16:56:58,877 INFO L276 IsEmpty]: Start isEmpty. Operand 5269 states and 8795 transitions. [2023-12-25 16:56:58,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3376 [2023-12-25 16:56:58,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:56:58,938 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:56:58,998 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 16:56:59,164 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,SelfDestructingSolverStorable10 [2023-12-25 16:56:59,164 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:56:59,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:56:59,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1396517764, now seen corresponding path program 1 times [2023-12-25 16:56:59,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:56:59,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085292907] [2023-12-25 16:56:59,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:56:59,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:56:59,369 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 16:56:59,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [324758313] [2023-12-25 16:56:59,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:56:59,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:56:59,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 16:56:59,371 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 16:56:59,396 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 16:57:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:57:02,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 16749 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 16:57:02,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 16:57:02,938 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 16:57:02,939 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 16:57:02,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:57:02,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085292907] [2023-12-25 16:57:02,939 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 16:57:02,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324758313] [2023-12-25 16:57:02,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324758313] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 16:57:02,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 16:57:02,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 16:57:02,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897305725] [2023-12-25 16:57:02,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:57:02,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 16:57:02,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:57:02,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 16:57:02,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 16:57:02,945 INFO L87 Difference]: Start difference. First operand 5269 states and 8795 transitions. Second operand has 4 states, 4 states have (on average 843.75) internal successors, (3375), 4 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states 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 16:57:03,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 16:57:03,041 INFO L93 Difference]: Finished difference Result 9956 states and 16621 transitions. [2023-12-25 16:57:03,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 16:57:03,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 843.75) internal successors, (3375), 4 states have internal predecessors, (3375), 0 states have call successors, (0), 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 3375 [2023-12-25 16:57:03,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 16:57:03,053 INFO L225 Difference]: With dead ends: 9956 [2023-12-25 16:57:03,053 INFO L226 Difference]: Without dead ends: 5278 [2023-12-25 16:57:03,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3374 GetRequests, 3372 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 16:57:03,059 INFO L413 NwaCegarLoop]: 8022 mSDtfsCounter, 12 mSDsluCounter, 16034 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24056 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 16:57:03,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 24056 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 16:57:03,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5278 states. [2023-12-25 16:57:03,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5278 to 5270. [2023-12-25 16:57:03,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5270 states, 5269 states have (on average 1.6693869804516985) internal successors, (8796), 5269 states have internal predecessors, (8796), 0 states have call successors, (0), 0 states 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 16:57:03,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5270 states to 5270 states and 8796 transitions. [2023-12-25 16:57:03,119 INFO L78 Accepts]: Start accepts. Automaton has 5270 states and 8796 transitions. Word has length 3375 [2023-12-25 16:57:03,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 16:57:03,121 INFO L495 AbstractCegarLoop]: Abstraction has 5270 states and 8796 transitions. [2023-12-25 16:57:03,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 843.75) internal successors, (3375), 4 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states 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 16:57:03,122 INFO L276 IsEmpty]: Start isEmpty. Operand 5270 states and 8796 transitions. [2023-12-25 16:57:03,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3376 [2023-12-25 16:57:03,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:57:03,183 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:57:03,227 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 16:57:03,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:57:03,400 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:57:03,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:57:03,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1822764342, now seen corresponding path program 1 times [2023-12-25 16:57:03,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:57:03,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657137792] [2023-12-25 16:57:03,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:57:03,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:57:03,604 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 16:57:03,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1151021953] [2023-12-25 16:57:03,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:57:03,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:57:03,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 16:57:03,606 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 16:57:03,607 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 16:57:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:57:07,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 16750 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-25 16:57:07,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 16:57:07,552 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 6 proven. 275 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-25 16:57:07,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 16:57:07,666 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2023-12-25 16:57:07,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:57:07,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657137792] [2023-12-25 16:57:07,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 16:57:07,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151021953] [2023-12-25 16:57:07,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151021953] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 16:57:07,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 16:57:07,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-25 16:57:07,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356309759] [2023-12-25 16:57:07,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:57:07,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 16:57:07,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:57:07,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 16:57:07,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 16:57:07,672 INFO L87 Difference]: Start difference. First operand 5270 states and 8796 transitions. Second operand has 6 states, 6 states have (on average 512.3333333333334) internal successors, (3074), 6 states have internal predecessors, (3074), 0 states have call successors, (0), 0 states 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 16:57:15,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 16:57:15,107 INFO L93 Difference]: Finished difference Result 23600 states and 39282 transitions. [2023-12-25 16:57:15,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 16:57:15,108 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 512.3333333333334) internal successors, (3074), 6 states have internal predecessors, (3074), 0 states have call successors, (0), 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 3375 [2023-12-25 16:57:15,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 16:57:15,126 INFO L225 Difference]: With dead ends: 23600 [2023-12-25 16:57:15,126 INFO L226 Difference]: Without dead ends: 14621 [2023-12-25 16:57:15,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6750 GetRequests, 6738 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-25 16:57:15,137 INFO L413 NwaCegarLoop]: 13576 mSDtfsCounter, 35592 mSDsluCounter, 32597 mSDsCounter, 0 mSdLazyCounter, 11580 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35592 SdHoareTripleChecker+Valid, 46173 SdHoareTripleChecker+Invalid, 11957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 11580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-12-25 16:57:15,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35592 Valid, 46173 Invalid, 11957 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [377 Valid, 11580 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-12-25 16:57:15,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14621 states. [2023-12-25 16:57:15,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14621 to 5270. [2023-12-25 16:57:15,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5270 states, 5269 states have (on average 1.6693869804516985) internal successors, (8796), 5269 states have internal predecessors, (8796), 0 states have call successors, (0), 0 states 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 16:57:15,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5270 states to 5270 states and 8796 transitions. [2023-12-25 16:57:15,225 INFO L78 Accepts]: Start accepts. Automaton has 5270 states and 8796 transitions. Word has length 3375 [2023-12-25 16:57:15,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 16:57:15,227 INFO L495 AbstractCegarLoop]: Abstraction has 5270 states and 8796 transitions. [2023-12-25 16:57:15,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 512.3333333333334) internal successors, (3074), 6 states have internal predecessors, (3074), 0 states have call successors, (0), 0 states 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 16:57:15,228 INFO L276 IsEmpty]: Start isEmpty. Operand 5270 states and 8796 transitions. [2023-12-25 16:57:15,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3377 [2023-12-25 16:57:15,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:57:15,287 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:57:15,338 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 16:57:15,496 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,SelfDestructingSolverStorable12 [2023-12-25 16:57:15,496 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:57:15,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:57:15,497 INFO L85 PathProgramCache]: Analyzing trace with hash 927001934, now seen corresponding path program 1 times [2023-12-25 16:57:15,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:57:15,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481327148] [2023-12-25 16:57:15,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:57:15,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:57:15,725 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 16:57:15,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020397133] [2023-12-25 16:57:15,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:57:15,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:57:15,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 16:57:15,727 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 16:57:15,728 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 16:57:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:57:19,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 16753 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 16:57:19,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 16:57:19,617 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 8 proven. 275 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-25 16:57:19,617 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 16:57:19,681 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2023-12-25 16:57:19,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:57:19,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481327148] [2023-12-25 16:57:19,682 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 16:57:19,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020397133] [2023-12-25 16:57:19,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020397133] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 16:57:19,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 16:57:19,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 16:57:19,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978379505] [2023-12-25 16:57:19,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:57:19,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 16:57:19,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:57:19,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 16:57:19,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 16:57:19,687 INFO L87 Difference]: Start difference. First operand 5270 states and 8796 transitions. Second operand has 5 states, 5 states have (on average 615.4) internal successors, (3077), 5 states have internal predecessors, (3077), 0 states have call successors, (0), 0 states 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 16:57:24,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 16:57:24,312 INFO L93 Difference]: Finished difference Result 18928 states and 31478 transitions. [2023-12-25 16:57:24,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 16:57:24,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 615.4) internal successors, (3077), 5 states have internal predecessors, (3077), 0 states have call successors, (0), 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 3376 [2023-12-25 16:57:24,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 16:57:24,324 INFO L225 Difference]: With dead ends: 18928 [2023-12-25 16:57:24,324 INFO L226 Difference]: Without dead ends: 9944 [2023-12-25 16:57:24,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6751 GetRequests, 6742 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 16:57:24,328 INFO L413 NwaCegarLoop]: 13566 mSDtfsCounter, 14453 mSDsluCounter, 20005 mSDsCounter, 0 mSdLazyCounter, 7448 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14453 SdHoareTripleChecker+Valid, 33571 SdHoareTripleChecker+Invalid, 7822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 7448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-25 16:57:24,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14453 Valid, 33571 Invalid, 7822 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 7448 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-25 16:57:24,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9944 states. [2023-12-25 16:57:24,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9944 to 5272. [2023-12-25 16:57:24,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5272 states, 5271 states have (on average 1.6691329918421551) internal successors, (8798), 5271 states have internal predecessors, (8798), 0 states have call successors, (0), 0 states 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 16:57:24,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5272 states to 5272 states and 8798 transitions. [2023-12-25 16:57:24,382 INFO L78 Accepts]: Start accepts. Automaton has 5272 states and 8798 transitions. Word has length 3376 [2023-12-25 16:57:24,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 16:57:24,384 INFO L495 AbstractCegarLoop]: Abstraction has 5272 states and 8798 transitions. [2023-12-25 16:57:24,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 615.4) internal successors, (3077), 5 states have internal predecessors, (3077), 0 states have call successors, (0), 0 states 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 16:57:24,384 INFO L276 IsEmpty]: Start isEmpty. Operand 5272 states and 8798 transitions. [2023-12-25 16:57:24,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3378 [2023-12-25 16:57:24,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:57:24,443 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:57:24,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-25 16:57:24,656 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,SelfDestructingSolverStorable13 [2023-12-25 16:57:24,656 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:57:24,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:57:24,657 INFO L85 PathProgramCache]: Analyzing trace with hash 182313956, now seen corresponding path program 1 times [2023-12-25 16:57:24,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:57:24,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383753713] [2023-12-25 16:57:24,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:57:24,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:57:24,855 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 16:57:24,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1071121916] [2023-12-25 16:57:24,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:57:24,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:57:24,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 16:57:24,857 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 16:57:24,857 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 16:57:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:57:28,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 16756 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 16:57:28,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 16:57:28,752 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 10 proven. 275 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-25 16:57:28,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 16:57:28,814 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-12-25 16:57:28,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:57:28,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383753713] [2023-12-25 16:57:28,815 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 16:57:28,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071121916] [2023-12-25 16:57:28,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071121916] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 16:57:28,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 16:57:28,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 16:57:28,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568293033] [2023-12-25 16:57:28,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:57:28,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 16:57:28,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:57:28,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 16:57:28,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 16:57:28,820 INFO L87 Difference]: Start difference. First operand 5272 states and 8798 transitions. Second operand has 5 states, 5 states have (on average 616.0) internal successors, (3080), 5 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states 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 16:57:32,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 16:57:32,669 INFO L93 Difference]: Finished difference Result 18936 states and 31486 transitions. [2023-12-25 16:57:32,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 16:57:32,670 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 616.0) internal successors, (3080), 5 states have internal predecessors, (3080), 0 states have call successors, (0), 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 3377 [2023-12-25 16:57:32,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 16:57:32,683 INFO L225 Difference]: With dead ends: 18936 [2023-12-25 16:57:32,684 INFO L226 Difference]: Without dead ends: 9945 [2023-12-25 16:57:32,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6753 GetRequests, 6744 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 16:57:32,692 INFO L413 NwaCegarLoop]: 13558 mSDtfsCounter, 21112 mSDsluCounter, 13201 mSDsCounter, 0 mSdLazyCounter, 5472 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21112 SdHoareTripleChecker+Valid, 26759 SdHoareTripleChecker+Invalid, 5846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 5472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-25 16:57:32,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21112 Valid, 26759 Invalid, 5846 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 5472 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-25 16:57:32,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9945 states. [2023-12-25 16:57:32,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9945 to 5274. [2023-12-25 16:57:32,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5274 states, 5273 states have (on average 1.6688791959036602) internal successors, (8800), 5273 states have internal predecessors, (8800), 0 states have call successors, (0), 0 states 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 16:57:32,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5274 states to 5274 states and 8800 transitions. [2023-12-25 16:57:32,759 INFO L78 Accepts]: Start accepts. Automaton has 5274 states and 8800 transitions. Word has length 3377 [2023-12-25 16:57:32,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 16:57:32,760 INFO L495 AbstractCegarLoop]: Abstraction has 5274 states and 8800 transitions. [2023-12-25 16:57:32,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 616.0) internal successors, (3080), 5 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states 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 16:57:32,761 INFO L276 IsEmpty]: Start isEmpty. Operand 5274 states and 8800 transitions. [2023-12-25 16:57:32,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3379 [2023-12-25 16:57:32,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:57:32,821 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:57:32,874 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 16:57:33,035 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,SelfDestructingSolverStorable14 [2023-12-25 16:57:33,036 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:57:33,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:57:33,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1584512242, now seen corresponding path program 1 times [2023-12-25 16:57:33,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:57:33,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415457293] [2023-12-25 16:57:33,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:57:33,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:57:33,243 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 16:57:33,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [355708777] [2023-12-25 16:57:33,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:57:33,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:57:33,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 16:57:33,245 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 16:57:33,264 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 16:57:36,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:57:36,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 16760 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 16:57:36,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 16:57:37,282 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 12 proven. 275 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-25 16:57:37,283 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 16:57:37,358 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2023-12-25 16:57:37,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:57:37,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415457293] [2023-12-25 16:57:37,358 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 16:57:37,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355708777] [2023-12-25 16:57:37,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355708777] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 16:57:37,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 16:57:37,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 16:57:37,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133995848] [2023-12-25 16:57:37,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:57:37,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 16:57:37,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:57:37,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 16:57:37,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 16:57:37,364 INFO L87 Difference]: Start difference. First operand 5274 states and 8800 transitions. Second operand has 5 states, 5 states have (on average 616.6) internal successors, (3083), 5 states have internal predecessors, (3083), 0 states have call successors, (0), 0 states 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 16:57:41,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 16:57:41,280 INFO L93 Difference]: Finished difference Result 18944 states and 31494 transitions. [2023-12-25 16:57:41,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 16:57:41,282 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 616.6) internal successors, (3083), 5 states have internal predecessors, (3083), 0 states have call successors, (0), 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 3378 [2023-12-25 16:57:41,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 16:57:41,292 INFO L225 Difference]: With dead ends: 18944 [2023-12-25 16:57:41,292 INFO L226 Difference]: Without dead ends: 9946 [2023-12-25 16:57:41,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6755 GetRequests, 6746 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 16:57:41,300 INFO L413 NwaCegarLoop]: 13550 mSDtfsCounter, 21104 mSDsluCounter, 13196 mSDsCounter, 0 mSdLazyCounter, 5472 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21104 SdHoareTripleChecker+Valid, 26746 SdHoareTripleChecker+Invalid, 5846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 5472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-25 16:57:41,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21104 Valid, 26746 Invalid, 5846 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 5472 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-25 16:57:41,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9946 states. [2023-12-25 16:57:41,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9946 to 5276. [2023-12-25 16:57:41,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5276 states, 5275 states have (on average 1.6686255924170617) internal successors, (8802), 5275 states have internal predecessors, (8802), 0 states have call successors, (0), 0 states 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 16:57:41,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5276 states to 5276 states and 8802 transitions. [2023-12-25 16:57:41,361 INFO L78 Accepts]: Start accepts. Automaton has 5276 states and 8802 transitions. Word has length 3378 [2023-12-25 16:57:41,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 16:57:41,362 INFO L495 AbstractCegarLoop]: Abstraction has 5276 states and 8802 transitions. [2023-12-25 16:57:41,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 616.6) internal successors, (3083), 5 states have internal predecessors, (3083), 0 states have call successors, (0), 0 states 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 16:57:41,363 INFO L276 IsEmpty]: Start isEmpty. Operand 5276 states and 8802 transitions. [2023-12-25 16:57:41,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3380 [2023-12-25 16:57:41,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:57:41,422 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:57:41,475 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 16:57:41,636 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,SelfDestructingSolverStorable15 [2023-12-25 16:57:41,636 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:57:41,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:57:41,638 INFO L85 PathProgramCache]: Analyzing trace with hash 175419068, now seen corresponding path program 1 times [2023-12-25 16:57:41,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:57:41,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502124640] [2023-12-25 16:57:41,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:57:41,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:57:41,831 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 16:57:41,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [374424423] [2023-12-25 16:57:41,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:57:41,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:57:41,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 16:57:41,833 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 16:57:41,834 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 16:57:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:57:45,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 16763 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 16:57:45,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 16:57:45,707 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 14 proven. 275 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-25 16:57:45,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 16:57:45,772 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2023-12-25 16:57:45,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:57:45,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502124640] [2023-12-25 16:57:45,773 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 16:57:45,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374424423] [2023-12-25 16:57:45,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374424423] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 16:57:45,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 16:57:45,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 16:57:45,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615780588] [2023-12-25 16:57:45,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:57:45,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 16:57:45,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:57:45,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 16:57:45,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 16:57:45,778 INFO L87 Difference]: Start difference. First operand 5276 states and 8802 transitions. Second operand has 5 states, 5 states have (on average 617.2) internal successors, (3086), 5 states have internal predecessors, (3086), 0 states have call successors, (0), 0 states 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 16:57:50,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 16:57:50,188 INFO L93 Difference]: Finished difference Result 18952 states and 31502 transitions. [2023-12-25 16:57:50,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 16:57:50,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 617.2) internal successors, (3086), 5 states have internal predecessors, (3086), 0 states have call successors, (0), 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 3379 [2023-12-25 16:57:50,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 16:57:50,198 INFO L225 Difference]: With dead ends: 18952 [2023-12-25 16:57:50,198 INFO L226 Difference]: Without dead ends: 9947 [2023-12-25 16:57:50,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6757 GetRequests, 6748 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 16:57:50,203 INFO L413 NwaCegarLoop]: 13542 mSDtfsCounter, 14440 mSDsluCounter, 19470 mSDsCounter, 0 mSdLazyCounter, 6972 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14440 SdHoareTripleChecker+Valid, 33012 SdHoareTripleChecker+Invalid, 7346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 6972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-25 16:57:50,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14440 Valid, 33012 Invalid, 7346 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [374 Valid, 6972 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-25 16:57:50,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9947 states. [2023-12-25 16:57:50,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9947 to 5278. [2023-12-25 16:57:50,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 1.66837218116354) internal successors, (8804), 5277 states have internal predecessors, (8804), 0 states have call successors, (0), 0 states 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 16:57:50,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 8804 transitions. [2023-12-25 16:57:50,271 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 8804 transitions. Word has length 3379 [2023-12-25 16:57:50,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 16:57:50,272 INFO L495 AbstractCegarLoop]: Abstraction has 5278 states and 8804 transitions. [2023-12-25 16:57:50,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 617.2) internal successors, (3086), 5 states have internal predecessors, (3086), 0 states have call successors, (0), 0 states 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 16:57:50,272 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 8804 transitions. [2023-12-25 16:57:50,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3381 [2023-12-25 16:57:50,329 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:57:50,330 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:57:50,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-25 16:57:50,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:57:50,556 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:57:50,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:57:50,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1812577576, now seen corresponding path program 1 times [2023-12-25 16:57:50,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:57:50,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466591137] [2023-12-25 16:57:50,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:57:50,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:57:50,755 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 16:57:50,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1934466405] [2023-12-25 16:57:50,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:57:50,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:57:50,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 16:57:50,757 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 16:57:50,759 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 16:57:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:57:54,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 16766 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 16:57:54,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 16:57:54,650 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 16 proven. 275 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-25 16:57:54,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 16:57:54,737 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-25 16:57:54,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:57:54,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466591137] [2023-12-25 16:57:54,738 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 16:57:54,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934466405] [2023-12-25 16:57:54,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934466405] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 16:57:54,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 16:57:54,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-25 16:57:54,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542030892] [2023-12-25 16:57:54,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:57:54,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 16:57:54,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:57:54,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 16:57:54,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 16:57:54,743 INFO L87 Difference]: Start difference. First operand 5278 states and 8804 transitions. Second operand has 6 states, 6 states have (on average 514.8333333333334) internal successors, (3089), 6 states have internal predecessors, (3089), 0 states have call successors, (0), 0 states 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 16:58:03,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 16:58:03,051 INFO L93 Difference]: Finished difference Result 23658 states and 39348 transitions. [2023-12-25 16:58:03,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 16:58:03,052 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 514.8333333333334) internal successors, (3089), 6 states have internal predecessors, (3089), 0 states have call successors, (0), 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 3380 [2023-12-25 16:58:03,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 16:58:03,062 INFO L225 Difference]: With dead ends: 23658 [2023-12-25 16:58:03,063 INFO L226 Difference]: Without dead ends: 14646 [2023-12-25 16:58:03,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6760 GetRequests, 6748 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-25 16:58:03,067 INFO L413 NwaCegarLoop]: 13536 mSDtfsCounter, 22223 mSDsluCounter, 45621 mSDsCounter, 0 mSdLazyCounter, 15057 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22223 SdHoareTripleChecker+Valid, 59157 SdHoareTripleChecker+Invalid, 15433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 15057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-25 16:58:03,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22223 Valid, 59157 Invalid, 15433 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [376 Valid, 15057 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-12-25 16:58:03,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14646 states. [2023-12-25 16:58:03,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14646 to 5280. [2023-12-25 16:58:03,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5280 states, 5279 states have (on average 1.6681189619246068) internal successors, (8806), 5279 states have internal predecessors, (8806), 0 states have call successors, (0), 0 states 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 16:58:03,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5280 states to 5280 states and 8806 transitions. [2023-12-25 16:58:03,135 INFO L78 Accepts]: Start accepts. Automaton has 5280 states and 8806 transitions. Word has length 3380 [2023-12-25 16:58:03,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 16:58:03,136 INFO L495 AbstractCegarLoop]: Abstraction has 5280 states and 8806 transitions. [2023-12-25 16:58:03,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 514.8333333333334) internal successors, (3089), 6 states have internal predecessors, (3089), 0 states have call successors, (0), 0 states 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 16:58:03,137 INFO L276 IsEmpty]: Start isEmpty. Operand 5280 states and 8806 transitions. [2023-12-25 16:58:03,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3382 [2023-12-25 16:58:03,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:58:03,195 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:58:03,238 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 16:58:03,408 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,SelfDestructingSolverStorable17 [2023-12-25 16:58:03,408 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:58:03,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:58:03,409 INFO L85 PathProgramCache]: Analyzing trace with hash -828843050, now seen corresponding path program 1 times [2023-12-25 16:58:03,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:58:03,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349164737] [2023-12-25 16:58:03,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:58:03,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:58:03,605 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 16:58:03,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [900430633] [2023-12-25 16:58:03,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:58:03,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:58:03,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 16:58:03,607 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 16:58:03,610 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 16:58:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:58:07,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 16769 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 16:58:07,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 16:58:07,443 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 18 proven. 275 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-25 16:58:07,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 16:58:07,520 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-12-25 16:58:07,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:58:07,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349164737] [2023-12-25 16:58:07,521 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 16:58:07,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900430633] [2023-12-25 16:58:07,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900430633] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 16:58:07,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 16:58:07,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 16:58:07,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564706931] [2023-12-25 16:58:07,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:58:07,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 16:58:07,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:58:07,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 16:58:07,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 16:58:07,531 INFO L87 Difference]: Start difference. First operand 5280 states and 8806 transitions. Second operand has 5 states, 5 states have (on average 618.4) internal successors, (3092), 5 states have internal predecessors, (3092), 0 states have call successors, (0), 0 states 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 16:58:11,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 16:58:11,431 INFO L93 Difference]: Finished difference Result 18968 states and 31518 transitions. [2023-12-25 16:58:11,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 16:58:11,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 618.4) internal successors, (3092), 5 states have internal predecessors, (3092), 0 states have call successors, (0), 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 3381 [2023-12-25 16:58:11,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 16:58:11,444 INFO L225 Difference]: With dead ends: 18968 [2023-12-25 16:58:11,444 INFO L226 Difference]: Without dead ends: 9949 [2023-12-25 16:58:11,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6761 GetRequests, 6752 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 16:58:11,453 INFO L413 NwaCegarLoop]: 13526 mSDtfsCounter, 21080 mSDsluCounter, 13181 mSDsCounter, 0 mSdLazyCounter, 5472 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21080 SdHoareTripleChecker+Valid, 26707 SdHoareTripleChecker+Invalid, 5846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 5472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-25 16:58:11,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21080 Valid, 26707 Invalid, 5846 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 5472 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-25 16:58:11,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9949 states. [2023-12-25 16:58:11,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9949 to 5282. [2023-12-25 16:58:11,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5282 states, 5281 states have (on average 1.6678659344821056) internal successors, (8808), 5281 states have internal predecessors, (8808), 0 states have call successors, (0), 0 states 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 16:58:11,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5282 states to 5282 states and 8808 transitions. [2023-12-25 16:58:11,519 INFO L78 Accepts]: Start accepts. Automaton has 5282 states and 8808 transitions. Word has length 3381 [2023-12-25 16:58:11,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 16:58:11,520 INFO L495 AbstractCegarLoop]: Abstraction has 5282 states and 8808 transitions. [2023-12-25 16:58:11,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 618.4) internal successors, (3092), 5 states have internal predecessors, (3092), 0 states have call successors, (0), 0 states 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 16:58:11,521 INFO L276 IsEmpty]: Start isEmpty. Operand 5282 states and 8808 transitions. [2023-12-25 16:58:11,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3383 [2023-12-25 16:58:11,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:58:11,579 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:58:11,620 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 16:58:11,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:58:11,786 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:58:11,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:58:11,787 INFO L85 PathProgramCache]: Analyzing trace with hash 829630844, now seen corresponding path program 1 times [2023-12-25 16:58:11,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:58:11,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415436038] [2023-12-25 16:58:11,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:58:11,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:58:11,996 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 16:58:11,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [753542305] [2023-12-25 16:58:11,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:58:11,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:58:11,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 16:58:11,999 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 16:58:12,003 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 16:58:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:58:15,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 16773 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 16:58:15,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 16:58:15,889 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 20 proven. 275 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-25 16:58:15,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 16:58:15,962 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-25 16:58:15,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:58:15,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415436038] [2023-12-25 16:58:15,963 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 16:58:15,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753542305] [2023-12-25 16:58:15,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753542305] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 16:58:15,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 16:58:15,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 16:58:15,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205023160] [2023-12-25 16:58:15,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:58:15,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 16:58:15,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:58:15,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 16:58:15,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 16:58:15,968 INFO L87 Difference]: Start difference. First operand 5282 states and 8808 transitions. Second operand has 5 states, 5 states have (on average 619.0) internal successors, (3095), 5 states have internal predecessors, (3095), 0 states have call successors, (0), 0 states 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 16:58:20,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 16:58:20,445 INFO L93 Difference]: Finished difference Result 18976 states and 31526 transitions. [2023-12-25 16:58:20,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 16:58:20,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 619.0) internal successors, (3095), 5 states have internal predecessors, (3095), 0 states have call successors, (0), 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 3382 [2023-12-25 16:58:20,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 16:58:20,456 INFO L225 Difference]: With dead ends: 18976 [2023-12-25 16:58:20,456 INFO L226 Difference]: Without dead ends: 9950 [2023-12-25 16:58:20,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6763 GetRequests, 6754 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 16:58:20,462 INFO L413 NwaCegarLoop]: 13518 mSDtfsCounter, 14417 mSDsluCounter, 19945 mSDsCounter, 0 mSdLazyCounter, 7448 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14417 SdHoareTripleChecker+Valid, 33463 SdHoareTripleChecker+Invalid, 7822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 7448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-25 16:58:20,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14417 Valid, 33463 Invalid, 7822 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 7448 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-25 16:58:20,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9950 states. [2023-12-25 16:58:20,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9950 to 5284. [2023-12-25 16:58:20,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5284 states, 5283 states have (on average 1.6676130986182094) internal successors, (8810), 5283 states have internal predecessors, (8810), 0 states have call successors, (0), 0 states 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 16:58:20,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5284 states to 5284 states and 8810 transitions. [2023-12-25 16:58:20,515 INFO L78 Accepts]: Start accepts. Automaton has 5284 states and 8810 transitions. Word has length 3382 [2023-12-25 16:58:20,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 16:58:20,516 INFO L495 AbstractCegarLoop]: Abstraction has 5284 states and 8810 transitions. [2023-12-25 16:58:20,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 619.0) internal successors, (3095), 5 states have internal predecessors, (3095), 0 states have call successors, (0), 0 states 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 16:58:20,517 INFO L276 IsEmpty]: Start isEmpty. Operand 5284 states and 8810 transitions. [2023-12-25 16:58:20,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3384 [2023-12-25 16:58:20,573 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:58:20,575 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:58:20,618 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 16:58:20,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:58:20,792 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:58:20,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:58:20,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1039051346, now seen corresponding path program 1 times [2023-12-25 16:58:20,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:58:20,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183525618] [2023-12-25 16:58:20,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:58:20,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:58:20,992 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 16:58:20,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126480751] [2023-12-25 16:58:20,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:58:20,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:58:20,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 16:58:20,994 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 16:58:21,020 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 16:58:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:58:24,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 16776 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 16:58:24,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 16:58:24,859 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 22 proven. 275 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-25 16:58:24,859 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 16:58:24,949 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-12-25 16:58:24,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:58:24,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183525618] [2023-12-25 16:58:24,949 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 16:58:24,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126480751] [2023-12-25 16:58:24,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126480751] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 16:58:24,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 16:58:24,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 16:58:24,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924102316] [2023-12-25 16:58:24,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:58:24,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 16:58:24,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:58:24,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 16:58:24,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 16:58:24,954 INFO L87 Difference]: Start difference. First operand 5284 states and 8810 transitions. Second operand has 5 states, 5 states have (on average 619.6) internal successors, (3098), 5 states have internal predecessors, (3098), 0 states have call successors, (0), 0 states 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 16:58:29,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 16:58:29,539 INFO L93 Difference]: Finished difference Result 18984 states and 31534 transitions. [2023-12-25 16:58:29,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 16:58:29,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 619.6) internal successors, (3098), 5 states have internal predecessors, (3098), 0 states have call successors, (0), 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 3383 [2023-12-25 16:58:29,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 16:58:29,550 INFO L225 Difference]: With dead ends: 18984 [2023-12-25 16:58:29,550 INFO L226 Difference]: Without dead ends: 9951 [2023-12-25 16:58:29,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6765 GetRequests, 6756 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 16:58:29,558 INFO L413 NwaCegarLoop]: 13510 mSDtfsCounter, 14411 mSDsluCounter, 19935 mSDsCounter, 0 mSdLazyCounter, 7448 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14411 SdHoareTripleChecker+Valid, 33445 SdHoareTripleChecker+Invalid, 7822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 7448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-25 16:58:29,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14411 Valid, 33445 Invalid, 7822 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 7448 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-25 16:58:29,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9951 states. [2023-12-25 16:58:29,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9951 to 5286. [2023-12-25 16:58:29,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5286 states, 5285 states have (on average 1.667360454115421) internal successors, (8812), 5285 states have internal predecessors, (8812), 0 states have call successors, (0), 0 states 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 16:58:29,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5286 states to 5286 states and 8812 transitions. [2023-12-25 16:58:29,613 INFO L78 Accepts]: Start accepts. Automaton has 5286 states and 8812 transitions. Word has length 3383 [2023-12-25 16:58:29,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 16:58:29,615 INFO L495 AbstractCegarLoop]: Abstraction has 5286 states and 8812 transitions. [2023-12-25 16:58:29,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 619.6) internal successors, (3098), 5 states have internal predecessors, (3098), 0 states have call successors, (0), 0 states 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 16:58:29,615 INFO L276 IsEmpty]: Start isEmpty. Operand 5286 states and 8812 transitions. [2023-12-25 16:58:29,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3385 [2023-12-25 16:58:29,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:58:29,672 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:58:29,715 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 16:58:29,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:58:29,892 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:58:29,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:58:29,893 INFO L85 PathProgramCache]: Analyzing trace with hash 4404066, now seen corresponding path program 1 times [2023-12-25 16:58:29,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:58:29,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390184717] [2023-12-25 16:58:29,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:58:29,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:58:30,112 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 16:58:30,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73820101] [2023-12-25 16:58:30,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:58:30,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:58:30,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 16:58:30,114 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 16:58:30,122 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 16:58:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:58:33,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 16779 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 16:58:33,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 16:58:33,900 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 24 proven. 275 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-25 16:58:33,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 16:58:34,002 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-12-25 16:58:34,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:58:34,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390184717] [2023-12-25 16:58:34,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 16:58:34,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73820101] [2023-12-25 16:58:34,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73820101] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 16:58:34,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 16:58:34,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 16:58:34,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172516152] [2023-12-25 16:58:34,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:58:34,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 16:58:34,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:58:34,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 16:58:34,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 16:58:34,007 INFO L87 Difference]: Start difference. First operand 5286 states and 8812 transitions. Second operand has 5 states, 5 states have (on average 620.2) internal successors, (3101), 5 states have internal predecessors, (3101), 0 states have call successors, (0), 0 states 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 16:58:38,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 16:58:38,465 INFO L93 Difference]: Finished difference Result 18992 states and 31542 transitions. [2023-12-25 16:58:38,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 16:58:38,467 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 620.2) internal successors, (3101), 5 states have internal predecessors, (3101), 0 states have call successors, (0), 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 3384 [2023-12-25 16:58:38,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 16:58:38,477 INFO L225 Difference]: With dead ends: 18992 [2023-12-25 16:58:38,477 INFO L226 Difference]: Without dead ends: 9952 [2023-12-25 16:58:38,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6767 GetRequests, 6758 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 16:58:38,484 INFO L413 NwaCegarLoop]: 13502 mSDtfsCounter, 14405 mSDsluCounter, 19925 mSDsCounter, 0 mSdLazyCounter, 7448 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14405 SdHoareTripleChecker+Valid, 33427 SdHoareTripleChecker+Invalid, 7822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 7448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-25 16:58:38,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14405 Valid, 33427 Invalid, 7822 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 7448 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-25 16:58:38,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9952 states. [2023-12-25 16:58:38,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9952 to 5288. [2023-12-25 16:58:38,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5288 states, 5287 states have (on average 1.6671080007565726) internal successors, (8814), 5287 states have internal predecessors, (8814), 0 states have call successors, (0), 0 states 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 16:58:38,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5288 states to 5288 states and 8814 transitions. [2023-12-25 16:58:38,538 INFO L78 Accepts]: Start accepts. Automaton has 5288 states and 8814 transitions. Word has length 3384 [2023-12-25 16:58:38,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 16:58:38,539 INFO L495 AbstractCegarLoop]: Abstraction has 5288 states and 8814 transitions. [2023-12-25 16:58:38,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 620.2) internal successors, (3101), 5 states have internal predecessors, (3101), 0 states have call successors, (0), 0 states 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 16:58:38,540 INFO L276 IsEmpty]: Start isEmpty. Operand 5288 states and 8814 transitions. [2023-12-25 16:58:38,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3386 [2023-12-25 16:58:38,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:58:38,691 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:58:38,732 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 16:58:38,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:58:38,892 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:58:38,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:58:38,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1260708152, now seen corresponding path program 1 times [2023-12-25 16:58:38,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:58:38,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076666304] [2023-12-25 16:58:38,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:58:38,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:58:39,099 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 16:58:39,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [514995801] [2023-12-25 16:58:39,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:58:39,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:58:39,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 16:58:39,101 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 16:58:39,128 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 16:58:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:58:42,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 16782 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 16:58:42,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 16:58:42,894 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 26 proven. 275 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-25 16:58:42,894 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 16:58:42,983 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-12-25 16:58:42,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:58:42,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076666304] [2023-12-25 16:58:42,983 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 16:58:42,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514995801] [2023-12-25 16:58:42,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514995801] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 16:58:42,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 16:58:42,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 16:58:42,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415393653] [2023-12-25 16:58:42,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:58:42,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 16:58:42,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:58:42,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 16:58:42,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 16:58:42,988 INFO L87 Difference]: Start difference. First operand 5288 states and 8814 transitions. Second operand has 5 states, 5 states have (on average 620.8) internal successors, (3104), 5 states have internal predecessors, (3104), 0 states have call successors, (0), 0 states 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 16:58:46,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 16:58:46,853 INFO L93 Difference]: Finished difference Result 19000 states and 31550 transitions. [2023-12-25 16:58:46,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 16:58:46,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 620.8) internal successors, (3104), 5 states have internal predecessors, (3104), 0 states have call successors, (0), 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 3385 [2023-12-25 16:58:46,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 16:58:46,867 INFO L225 Difference]: With dead ends: 19000 [2023-12-25 16:58:46,867 INFO L226 Difference]: Without dead ends: 9953 [2023-12-25 16:58:46,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6769 GetRequests, 6760 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 16:58:46,873 INFO L413 NwaCegarLoop]: 13494 mSDtfsCounter, 21048 mSDsluCounter, 13161 mSDsCounter, 0 mSdLazyCounter, 5472 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21048 SdHoareTripleChecker+Valid, 26655 SdHoareTripleChecker+Invalid, 5846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 5472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-25 16:58:46,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21048 Valid, 26655 Invalid, 5846 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 5472 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-25 16:58:46,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9953 states. [2023-12-25 16:58:46,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9953 to 5290. [2023-12-25 16:58:46,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5290 states, 5289 states have (on average 1.666855738324825) internal successors, (8816), 5289 states have internal predecessors, (8816), 0 states have call successors, (0), 0 states 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 16:58:46,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5290 states to 5290 states and 8816 transitions. [2023-12-25 16:58:46,926 INFO L78 Accepts]: Start accepts. Automaton has 5290 states and 8816 transitions. Word has length 3385 [2023-12-25 16:58:46,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 16:58:46,927 INFO L495 AbstractCegarLoop]: Abstraction has 5290 states and 8816 transitions. [2023-12-25 16:58:46,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 620.8) internal successors, (3104), 5 states have internal predecessors, (3104), 0 states have call successors, (0), 0 states 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 16:58:46,928 INFO L276 IsEmpty]: Start isEmpty. Operand 5290 states and 8816 transitions. [2023-12-25 16:58:46,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3387 [2023-12-25 16:58:46,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:58:46,985 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:58:47,027 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 16:58:47,186 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,SelfDestructingSolverStorable22 [2023-12-25 16:58:47,186 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:58:47,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:58:47,187 INFO L85 PathProgramCache]: Analyzing trace with hash 715337990, now seen corresponding path program 1 times [2023-12-25 16:58:47,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:58:47,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320895949] [2023-12-25 16:58:47,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:58:47,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:58:47,378 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 16:58:47,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [281341888] [2023-12-25 16:58:47,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:58:47,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:58:47,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 16:58:47,380 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 16:58:47,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-25 16:58:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:58:51,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 16786 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 16:58:51,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 16:58:51,402 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 28 proven. 275 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-25 16:58:51,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 16:58:51,512 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-12-25 16:58:51,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:58:51,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320895949] [2023-12-25 16:58:51,512 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 16:58:51,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281341888] [2023-12-25 16:58:51,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281341888] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 16:58:51,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 16:58:51,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 16:58:51,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897805449] [2023-12-25 16:58:51,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:58:51,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 16:58:51,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:58:51,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 16:58:51,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 16:58:51,517 INFO L87 Difference]: Start difference. First operand 5290 states and 8816 transitions. Second operand has 5 states, 5 states have (on average 621.4) internal successors, (3107), 5 states have internal predecessors, (3107), 0 states have call successors, (0), 0 states 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 16:58:56,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 16:58:56,101 INFO L93 Difference]: Finished difference Result 19008 states and 31558 transitions. [2023-12-25 16:58:56,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 16:58:56,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 621.4) internal successors, (3107), 5 states have internal predecessors, (3107), 0 states have call successors, (0), 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 3386 [2023-12-25 16:58:56,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 16:58:56,113 INFO L225 Difference]: With dead ends: 19008 [2023-12-25 16:58:56,113 INFO L226 Difference]: Without dead ends: 9954 [2023-12-25 16:58:56,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6771 GetRequests, 6762 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 16:58:56,121 INFO L413 NwaCegarLoop]: 13486 mSDtfsCounter, 14393 mSDsluCounter, 19905 mSDsCounter, 0 mSdLazyCounter, 7448 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14393 SdHoareTripleChecker+Valid, 33391 SdHoareTripleChecker+Invalid, 7822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 7448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-25 16:58:56,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14393 Valid, 33391 Invalid, 7822 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 7448 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-25 16:58:56,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9954 states. [2023-12-25 16:58:56,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9954 to 5292. [2023-12-25 16:58:56,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5292 states, 5291 states have (on average 1.6666036666036665) internal successors, (8818), 5291 states have internal predecessors, (8818), 0 states have call successors, (0), 0 states 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 16:58:56,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5292 states to 5292 states and 8818 transitions. [2023-12-25 16:58:56,174 INFO L78 Accepts]: Start accepts. Automaton has 5292 states and 8818 transitions. Word has length 3386 [2023-12-25 16:58:56,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 16:58:56,175 INFO L495 AbstractCegarLoop]: Abstraction has 5292 states and 8818 transitions. [2023-12-25 16:58:56,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 621.4) internal successors, (3107), 5 states have internal predecessors, (3107), 0 states have call successors, (0), 0 states 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 16:58:56,176 INFO L276 IsEmpty]: Start isEmpty. Operand 5292 states and 8818 transitions. [2023-12-25 16:58:56,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3388 [2023-12-25 16:58:56,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:58:56,233 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:58:56,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-25 16:58:56,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-25 16:58:56,433 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:58:56,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:58:56,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1632978848, now seen corresponding path program 1 times [2023-12-25 16:58:56,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:58:56,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001684904] [2023-12-25 16:58:56,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:58:56,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:58:56,647 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 16:58:56,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1985311029] [2023-12-25 16:58:56,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:58:56,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:58:56,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 16:58:56,652 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 16:58:56,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-25 16:59:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:59:00,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 16789 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 16:59:00,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 16:59:00,564 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 30 proven. 275 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-25 16:59:00,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 16:59:00,665 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2023-12-25 16:59:00,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:59:00,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001684904] [2023-12-25 16:59:00,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 16:59:00,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985311029] [2023-12-25 16:59:00,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985311029] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 16:59:00,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 16:59:00,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 16:59:00,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599095761] [2023-12-25 16:59:00,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:59:00,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 16:59:00,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:59:00,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 16:59:00,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 16:59:00,672 INFO L87 Difference]: Start difference. First operand 5292 states and 8818 transitions. Second operand has 5 states, 5 states have (on average 622.0) internal successors, (3110), 5 states have internal predecessors, (3110), 0 states have call successors, (0), 0 states 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 16:59:05,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 16:59:05,189 INFO L93 Difference]: Finished difference Result 19016 states and 31566 transitions. [2023-12-25 16:59:05,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 16:59:05,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 622.0) internal successors, (3110), 5 states have internal predecessors, (3110), 0 states have call successors, (0), 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 3387 [2023-12-25 16:59:05,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 16:59:05,199 INFO L225 Difference]: With dead ends: 19016 [2023-12-25 16:59:05,199 INFO L226 Difference]: Without dead ends: 9955 [2023-12-25 16:59:05,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6773 GetRequests, 6764 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 16:59:05,204 INFO L413 NwaCegarLoop]: 13478 mSDtfsCounter, 14400 mSDsluCounter, 19406 mSDsCounter, 0 mSdLazyCounter, 6972 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14400 SdHoareTripleChecker+Valid, 32884 SdHoareTripleChecker+Invalid, 7346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 6972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-25 16:59:05,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14400 Valid, 32884 Invalid, 7346 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 6972 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-25 16:59:05,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9955 states. [2023-12-25 16:59:05,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9955 to 5294. [2023-12-25 16:59:05,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5294 states, 5293 states have (on average 1.666351785376913) internal successors, (8820), 5293 states have internal predecessors, (8820), 0 states have call successors, (0), 0 states 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 16:59:05,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5294 states to 5294 states and 8820 transitions. [2023-12-25 16:59:05,258 INFO L78 Accepts]: Start accepts. Automaton has 5294 states and 8820 transitions. Word has length 3387 [2023-12-25 16:59:05,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 16:59:05,259 INFO L495 AbstractCegarLoop]: Abstraction has 5294 states and 8820 transitions. [2023-12-25 16:59:05,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 622.0) internal successors, (3110), 5 states have internal predecessors, (3110), 0 states have call successors, (0), 0 states 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 16:59:05,260 INFO L276 IsEmpty]: Start isEmpty. Operand 5294 states and 8820 transitions. [2023-12-25 16:59:05,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3389 [2023-12-25 16:59:05,317 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:59:05,317 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:59:05,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-25 16:59:05,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:59:05,522 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:59:05,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:59:05,523 INFO L85 PathProgramCache]: Analyzing trace with hash 842677996, now seen corresponding path program 1 times [2023-12-25 16:59:05,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:59:05,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209482655] [2023-12-25 16:59:05,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:59:05,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:59:05,768 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 16:59:05,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [613922167] [2023-12-25 16:59:05,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:59:05,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:59:05,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 16:59:05,770 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 16:59:05,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-25 16:59:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:59:09,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 16792 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 16:59:09,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 16:59:09,742 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 32 proven. 275 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-25 16:59:09,742 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 16:59:09,859 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-25 16:59:09,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:59:09,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209482655] [2023-12-25 16:59:09,860 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 16:59:09,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613922167] [2023-12-25 16:59:09,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613922167] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 16:59:09,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 16:59:09,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-25 16:59:09,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57154311] [2023-12-25 16:59:09,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:59:09,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 16:59:09,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:59:09,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 16:59:09,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 16:59:09,864 INFO L87 Difference]: Start difference. First operand 5294 states and 8820 transitions. Second operand has 6 states, 6 states have (on average 518.8333333333334) internal successors, (3113), 6 states have internal predecessors, (3113), 0 states have call successors, (0), 0 states 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 16:59:18,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 16:59:18,302 INFO L93 Difference]: Finished difference Result 23762 states and 39468 transitions. [2023-12-25 16:59:18,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 16:59:18,303 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 518.8333333333334) internal successors, (3113), 6 states have internal predecessors, (3113), 0 states have call successors, (0), 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 3388 [2023-12-25 16:59:18,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 16:59:18,313 INFO L225 Difference]: With dead ends: 23762 [2023-12-25 16:59:18,314 INFO L226 Difference]: Without dead ends: 14694 [2023-12-25 16:59:18,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6776 GetRequests, 6764 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-25 16:59:18,317 INFO L413 NwaCegarLoop]: 13472 mSDtfsCounter, 22175 mSDsluCounter, 45501 mSDsCounter, 0 mSdLazyCounter, 15057 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22175 SdHoareTripleChecker+Valid, 58973 SdHoareTripleChecker+Invalid, 15433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 15057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-12-25 16:59:18,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22175 Valid, 58973 Invalid, 15433 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [376 Valid, 15057 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2023-12-25 16:59:18,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14694 states. [2023-12-25 16:59:18,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14694 to 5296. [2023-12-25 16:59:18,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5296 states, 5295 states have (on average 1.6661000944287063) internal successors, (8822), 5295 states have internal predecessors, (8822), 0 states have call successors, (0), 0 states 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 16:59:18,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5296 states to 5296 states and 8822 transitions. [2023-12-25 16:59:18,373 INFO L78 Accepts]: Start accepts. Automaton has 5296 states and 8822 transitions. Word has length 3388 [2023-12-25 16:59:18,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 16:59:18,374 INFO L495 AbstractCegarLoop]: Abstraction has 5296 states and 8822 transitions. [2023-12-25 16:59:18,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 518.8333333333334) internal successors, (3113), 6 states have internal predecessors, (3113), 0 states have call successors, (0), 0 states 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 16:59:18,375 INFO L276 IsEmpty]: Start isEmpty. Operand 5296 states and 8822 transitions. [2023-12-25 16:59:18,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3390 [2023-12-25 16:59:18,433 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:59:18,433 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:59:18,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-25 16:59:18,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:59:18,647 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:59:18,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:59:18,648 INFO L85 PathProgramCache]: Analyzing trace with hash -154587974, now seen corresponding path program 1 times [2023-12-25 16:59:18,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:59:18,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695293637] [2023-12-25 16:59:18,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:59:18,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:59:18,842 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 16:59:18,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2103926371] [2023-12-25 16:59:18,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:59:18,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:59:18,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 16:59:18,844 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 16:59:18,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-25 16:59:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:59:22,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 16795 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 16:59:22,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 16:59:22,726 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 33 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 16:59:22,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 16:59:22,816 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-12-25 16:59:22,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:59:22,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695293637] [2023-12-25 16:59:22,816 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 16:59:22,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103926371] [2023-12-25 16:59:22,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103926371] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 16:59:22,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 16:59:22,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 16:59:22,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400097429] [2023-12-25 16:59:22,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:59:22,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 16:59:22,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:59:22,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 16:59:22,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 16:59:22,821 INFO L87 Difference]: Start difference. First operand 5296 states and 8822 transitions. Second operand has 5 states, 5 states have (on average 623.2) internal successors, (3116), 5 states have internal predecessors, (3116), 0 states have call successors, (0), 0 states 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 16:59:27,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 16:59:27,352 INFO L93 Difference]: Finished difference Result 19032 states and 31582 transitions. [2023-12-25 16:59:27,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 16:59:27,353 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 623.2) internal successors, (3116), 5 states have internal predecessors, (3116), 0 states have call successors, (0), 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 3389 [2023-12-25 16:59:27,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 16:59:27,364 INFO L225 Difference]: With dead ends: 19032 [2023-12-25 16:59:27,365 INFO L226 Difference]: Without dead ends: 9957 [2023-12-25 16:59:27,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6777 GetRequests, 6768 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 16:59:27,372 INFO L413 NwaCegarLoop]: 13462 mSDtfsCounter, 14375 mSDsluCounter, 19875 mSDsCounter, 0 mSdLazyCounter, 7448 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14375 SdHoareTripleChecker+Valid, 33337 SdHoareTripleChecker+Invalid, 7822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 7448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-25 16:59:27,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14375 Valid, 33337 Invalid, 7822 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 7448 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-25 16:59:27,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9957 states. [2023-12-25 16:59:27,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9957 to 5298. [2023-12-25 16:59:27,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5298 states, 5297 states have (on average 1.6658485935435152) internal successors, (8824), 5297 states have internal predecessors, (8824), 0 states have call successors, (0), 0 states 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 16:59:27,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5298 states to 5298 states and 8824 transitions. [2023-12-25 16:59:27,431 INFO L78 Accepts]: Start accepts. Automaton has 5298 states and 8824 transitions. Word has length 3389 [2023-12-25 16:59:27,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 16:59:27,433 INFO L495 AbstractCegarLoop]: Abstraction has 5298 states and 8824 transitions. [2023-12-25 16:59:27,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 623.2) internal successors, (3116), 5 states have internal predecessors, (3116), 0 states have call successors, (0), 0 states 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 16:59:27,433 INFO L276 IsEmpty]: Start isEmpty. Operand 5298 states and 8824 transitions. [2023-12-25 16:59:27,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3391 [2023-12-25 16:59:27,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:59:27,491 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:59:27,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-25 16:59:27,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-25 16:59:27,692 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:59:27,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:59:27,693 INFO L85 PathProgramCache]: Analyzing trace with hash 2027180944, now seen corresponding path program 1 times [2023-12-25 16:59:27,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:59:27,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983578094] [2023-12-25 16:59:27,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:59:27,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:59:27,901 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 16:59:27,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1880955680] [2023-12-25 16:59:27,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:59:27,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:59:27,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 16:59:27,903 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 16:59:27,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-25 16:59:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:59:31,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 16799 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 16:59:31,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 16:59:31,968 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 34 proven. 274 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 16:59:31,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 16:59:32,060 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-25 16:59:32,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:59:32,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983578094] [2023-12-25 16:59:32,060 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 16:59:32,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880955680] [2023-12-25 16:59:32,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880955680] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 16:59:32,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 16:59:32,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 16:59:32,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672612919] [2023-12-25 16:59:32,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:59:32,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 16:59:32,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:59:32,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 16:59:32,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 16:59:32,065 INFO L87 Difference]: Start difference. First operand 5298 states and 8824 transitions. Second operand has 5 states, 5 states have (on average 623.8) internal successors, (3119), 5 states have internal predecessors, (3119), 0 states have call successors, (0), 0 states 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 16:59:36,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 16:59:36,476 INFO L93 Difference]: Finished difference Result 19040 states and 31590 transitions. [2023-12-25 16:59:36,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 16:59:36,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 623.8) internal successors, (3119), 5 states have internal predecessors, (3119), 0 states have call successors, (0), 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 3390 [2023-12-25 16:59:36,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 16:59:36,488 INFO L225 Difference]: With dead ends: 19040 [2023-12-25 16:59:36,488 INFO L226 Difference]: Without dead ends: 9958 [2023-12-25 16:59:36,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6779 GetRequests, 6770 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 16:59:36,494 INFO L413 NwaCegarLoop]: 13454 mSDtfsCounter, 14385 mSDsluCounter, 19382 mSDsCounter, 0 mSdLazyCounter, 6972 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14385 SdHoareTripleChecker+Valid, 32836 SdHoareTripleChecker+Invalid, 7346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 6972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-25 16:59:36,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14385 Valid, 32836 Invalid, 7346 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 6972 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-25 16:59:36,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9958 states. [2023-12-25 16:59:36,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9958 to 5300. [2023-12-25 16:59:36,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5300 states, 5299 states have (on average 1.6655972825061331) internal successors, (8826), 5299 states have internal predecessors, (8826), 0 states have call successors, (0), 0 states 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 16:59:36,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5300 states to 5300 states and 8826 transitions. [2023-12-25 16:59:36,553 INFO L78 Accepts]: Start accepts. Automaton has 5300 states and 8826 transitions. Word has length 3390 [2023-12-25 16:59:36,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 16:59:36,554 INFO L495 AbstractCegarLoop]: Abstraction has 5300 states and 8826 transitions. [2023-12-25 16:59:36,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 623.8) internal successors, (3119), 5 states have internal predecessors, (3119), 0 states have call successors, (0), 0 states 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 16:59:36,555 INFO L276 IsEmpty]: Start isEmpty. Operand 5300 states and 8826 transitions. [2023-12-25 16:59:36,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3392 [2023-12-25 16:59:36,612 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:59:36,613 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:59:36,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-25 16:59:36,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-25 16:59:36,814 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:59:36,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:59:36,814 INFO L85 PathProgramCache]: Analyzing trace with hash 908395666, now seen corresponding path program 1 times [2023-12-25 16:59:36,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:59:36,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504933643] [2023-12-25 16:59:36,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:59:36,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:59:37,025 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 16:59:37,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238263465] [2023-12-25 16:59:37,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:59:37,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:59:37,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 16:59:37,027 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 16:59:37,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-25 16:59:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:59:40,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 16802 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 16:59:40,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 16:59:41,015 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 36 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 16:59:41,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 16:59:41,296 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-12-25 16:59:41,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:59:41,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504933643] [2023-12-25 16:59:41,296 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 16:59:41,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238263465] [2023-12-25 16:59:41,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238263465] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 16:59:41,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 16:59:41,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 16:59:41,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910606523] [2023-12-25 16:59:41,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:59:41,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 16:59:41,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:59:41,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 16:59:41,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 16:59:41,300 INFO L87 Difference]: Start difference. First operand 5300 states and 8826 transitions. Second operand has 5 states, 5 states have (on average 624.4) internal successors, (3122), 5 states have internal predecessors, (3122), 0 states have call successors, (0), 0 states 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 16:59:45,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 16:59:45,329 INFO L93 Difference]: Finished difference Result 19048 states and 31598 transitions. [2023-12-25 16:59:45,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 16:59:45,330 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 624.4) internal successors, (3122), 5 states have internal predecessors, (3122), 0 states have call successors, (0), 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 3391 [2023-12-25 16:59:45,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 16:59:45,340 INFO L225 Difference]: With dead ends: 19048 [2023-12-25 16:59:45,341 INFO L226 Difference]: Without dead ends: 9959 [2023-12-25 16:59:45,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6781 GetRequests, 6772 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 16:59:45,347 INFO L413 NwaCegarLoop]: 13446 mSDtfsCounter, 21000 mSDsluCounter, 13131 mSDsCounter, 0 mSdLazyCounter, 5472 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21000 SdHoareTripleChecker+Valid, 26577 SdHoareTripleChecker+Invalid, 5846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 5472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-25 16:59:45,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21000 Valid, 26577 Invalid, 5846 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 5472 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-25 16:59:45,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9959 states. [2023-12-25 16:59:45,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9959 to 5302. [2023-12-25 16:59:45,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5302 states, 5301 states have (on average 1.6653461611016789) internal successors, (8828), 5301 states have internal predecessors, (8828), 0 states have call successors, (0), 0 states 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 16:59:45,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5302 states to 5302 states and 8828 transitions. [2023-12-25 16:59:45,401 INFO L78 Accepts]: Start accepts. Automaton has 5302 states and 8828 transitions. Word has length 3391 [2023-12-25 16:59:45,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 16:59:45,402 INFO L495 AbstractCegarLoop]: Abstraction has 5302 states and 8828 transitions. [2023-12-25 16:59:45,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 624.4) internal successors, (3122), 5 states have internal predecessors, (3122), 0 states have call successors, (0), 0 states 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 16:59:45,403 INFO L276 IsEmpty]: Start isEmpty. Operand 5302 states and 8828 transitions. [2023-12-25 16:59:45,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3393 [2023-12-25 16:59:45,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:59:45,460 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:59:45,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-25 16:59:45,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-25 16:59:45,661 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:59:45,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:59:45,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1320019318, now seen corresponding path program 1 times [2023-12-25 16:59:45,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:59:45,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491723326] [2023-12-25 16:59:45,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:59:45,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:59:45,859 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 16:59:45,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1761239196] [2023-12-25 16:59:45,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:59:45,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:59:45,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 16:59:45,861 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 16:59:45,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-25 16:59:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:59:49,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 16805 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 16:59:49,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 16:59:49,803 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 38 proven. 270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 16:59:49,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 16:59:50,092 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2023-12-25 16:59:50,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:59:50,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491723326] [2023-12-25 16:59:50,093 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 16:59:50,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761239196] [2023-12-25 16:59:50,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761239196] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 16:59:50,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 16:59:50,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 16:59:50,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485222423] [2023-12-25 16:59:50,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:59:50,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 16:59:50,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:59:50,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 16:59:50,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 16:59:50,097 INFO L87 Difference]: Start difference. First operand 5302 states and 8828 transitions. Second operand has 5 states, 5 states have (on average 625.0) internal successors, (3125), 5 states have internal predecessors, (3125), 0 states have call successors, (0), 0 states 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 16:59:54,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 16:59:54,700 INFO L93 Difference]: Finished difference Result 19056 states and 31606 transitions. [2023-12-25 16:59:54,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 16:59:54,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 625.0) internal successors, (3125), 5 states have internal predecessors, (3125), 0 states have call successors, (0), 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 3392 [2023-12-25 16:59:54,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 16:59:54,711 INFO L225 Difference]: With dead ends: 19056 [2023-12-25 16:59:54,712 INFO L226 Difference]: Without dead ends: 9960 [2023-12-25 16:59:54,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6783 GetRequests, 6774 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 16:59:54,719 INFO L413 NwaCegarLoop]: 13438 mSDtfsCounter, 14357 mSDsluCounter, 19845 mSDsCounter, 0 mSdLazyCounter, 7448 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14357 SdHoareTripleChecker+Valid, 33283 SdHoareTripleChecker+Invalid, 7822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 7448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-25 16:59:54,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14357 Valid, 33283 Invalid, 7822 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 7448 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-25 16:59:54,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9960 states. [2023-12-25 16:59:54,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9960 to 5304. [2023-12-25 16:59:54,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5304 states, 5303 states have (on average 1.665095229115595) internal successors, (8830), 5303 states have internal predecessors, (8830), 0 states have call successors, (0), 0 states 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 16:59:54,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5304 states to 5304 states and 8830 transitions. [2023-12-25 16:59:54,773 INFO L78 Accepts]: Start accepts. Automaton has 5304 states and 8830 transitions. Word has length 3392 [2023-12-25 16:59:54,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 16:59:54,774 INFO L495 AbstractCegarLoop]: Abstraction has 5304 states and 8830 transitions. [2023-12-25 16:59:54,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 625.0) internal successors, (3125), 5 states have internal predecessors, (3125), 0 states have call successors, (0), 0 states 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 16:59:54,775 INFO L276 IsEmpty]: Start isEmpty. Operand 5304 states and 8830 transitions. [2023-12-25 16:59:54,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3394 [2023-12-25 16:59:54,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 16:59:54,832 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:59:54,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-25 16:59:55,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:59:55,037 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 16:59:55,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 16:59:55,038 INFO L85 PathProgramCache]: Analyzing trace with hash 340231596, now seen corresponding path program 1 times [2023-12-25 16:59:55,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 16:59:55,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709723139] [2023-12-25 16:59:55,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:59:55,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 16:59:55,246 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 16:59:55,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1218519686] [2023-12-25 16:59:55,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 16:59:55,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 16:59:55,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 16:59:55,248 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 16:59:55,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-25 16:59:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 16:59:58,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 16808 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 16:59:58,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 16:59:59,157 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 40 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 16:59:59,157 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 16:59:59,410 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2023-12-25 16:59:59,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 16:59:59,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709723139] [2023-12-25 16:59:59,410 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 16:59:59,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218519686] [2023-12-25 16:59:59,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218519686] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 16:59:59,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 16:59:59,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 16:59:59,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370395949] [2023-12-25 16:59:59,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 16:59:59,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 16:59:59,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 16:59:59,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 16:59:59,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 16:59:59,414 INFO L87 Difference]: Start difference. First operand 5304 states and 8830 transitions. Second operand has 5 states, 5 states have (on average 625.6) internal successors, (3128), 5 states have internal predecessors, (3128), 0 states have call successors, (0), 0 states 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 17:00:03,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:00:03,929 INFO L93 Difference]: Finished difference Result 19064 states and 31614 transitions. [2023-12-25 17:00:03,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:00:03,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 625.6) internal successors, (3128), 5 states have internal predecessors, (3128), 0 states have call successors, (0), 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 3393 [2023-12-25 17:00:03,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:00:03,943 INFO L225 Difference]: With dead ends: 19064 [2023-12-25 17:00:03,943 INFO L226 Difference]: Without dead ends: 9961 [2023-12-25 17:00:03,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6785 GetRequests, 6776 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:00:03,951 INFO L413 NwaCegarLoop]: 13430 mSDtfsCounter, 14351 mSDsluCounter, 19835 mSDsCounter, 0 mSdLazyCounter, 7448 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14351 SdHoareTripleChecker+Valid, 33265 SdHoareTripleChecker+Invalid, 7822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 7448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-25 17:00:03,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14351 Valid, 33265 Invalid, 7822 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 7448 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-25 17:00:03,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9961 states. [2023-12-25 17:00:03,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9961 to 5306. [2023-12-25 17:00:04,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5306 states, 5305 states have (on average 1.6648444863336476) internal successors, (8832), 5305 states have internal predecessors, (8832), 0 states have call successors, (0), 0 states 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 17:00:04,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5306 states to 5306 states and 8832 transitions. [2023-12-25 17:00:04,006 INFO L78 Accepts]: Start accepts. Automaton has 5306 states and 8832 transitions. Word has length 3393 [2023-12-25 17:00:04,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:00:04,007 INFO L495 AbstractCegarLoop]: Abstraction has 5306 states and 8832 transitions. [2023-12-25 17:00:04,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 625.6) internal successors, (3128), 5 states have internal predecessors, (3128), 0 states have call successors, (0), 0 states 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 17:00:04,008 INFO L276 IsEmpty]: Start isEmpty. Operand 5306 states and 8832 transitions. [2023-12-25 17:00:04,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3395 [2023-12-25 17:00:04,065 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:00:04,066 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:04,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-25 17:00:04,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:00:04,286 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:00:04,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:00:04,287 INFO L85 PathProgramCache]: Analyzing trace with hash -107409126, now seen corresponding path program 1 times [2023-12-25 17:00:04,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:00:04,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234145708] [2023-12-25 17:00:04,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:00:04,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:00:04,487 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:00:04,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1704523978] [2023-12-25 17:00:04,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:00:04,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:00:04,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:00:04,489 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:00:04,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-25 17:00:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:00:08,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 16812 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:00:08,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:00:08,642 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 42 proven. 266 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:00:08,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:00:08,743 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-25 17:00:08,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:00:08,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234145708] [2023-12-25 17:00:08,743 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:00:08,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704523978] [2023-12-25 17:00:08,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704523978] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:00:08,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:00:08,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:00:08,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436822444] [2023-12-25 17:00:08,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:00:08,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:00:08,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:00:08,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:00:08,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:00:08,748 INFO L87 Difference]: Start difference. First operand 5306 states and 8832 transitions. Second operand has 5 states, 5 states have (on average 626.2) internal successors, (3131), 5 states have internal predecessors, (3131), 0 states have call successors, (0), 0 states 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 17:00:13,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:00:13,285 INFO L93 Difference]: Finished difference Result 19072 states and 31622 transitions. [2023-12-25 17:00:13,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:00:13,286 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 626.2) internal successors, (3131), 5 states have internal predecessors, (3131), 0 states have call successors, (0), 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 3394 [2023-12-25 17:00:13,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:00:13,296 INFO L225 Difference]: With dead ends: 19072 [2023-12-25 17:00:13,296 INFO L226 Difference]: Without dead ends: 9962 [2023-12-25 17:00:13,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6787 GetRequests, 6778 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:00:13,303 INFO L413 NwaCegarLoop]: 13422 mSDtfsCounter, 14345 mSDsluCounter, 19825 mSDsCounter, 0 mSdLazyCounter, 7448 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14345 SdHoareTripleChecker+Valid, 33247 SdHoareTripleChecker+Invalid, 7822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 7448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-25 17:00:13,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14345 Valid, 33247 Invalid, 7822 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 7448 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-25 17:00:13,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9962 states. [2023-12-25 17:00:13,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9962 to 5308. [2023-12-25 17:00:13,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5308 states, 5307 states have (on average 1.6645939325419257) internal successors, (8834), 5307 states have internal predecessors, (8834), 0 states have call successors, (0), 0 states 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 17:00:13,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5308 states to 5308 states and 8834 transitions. [2023-12-25 17:00:13,356 INFO L78 Accepts]: Start accepts. Automaton has 5308 states and 8834 transitions. Word has length 3394 [2023-12-25 17:00:13,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:00:13,357 INFO L495 AbstractCegarLoop]: Abstraction has 5308 states and 8834 transitions. [2023-12-25 17:00:13,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 626.2) internal successors, (3131), 5 states have internal predecessors, (3131), 0 states have call successors, (0), 0 states 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 17:00:13,358 INFO L276 IsEmpty]: Start isEmpty. Operand 5308 states and 8834 transitions. [2023-12-25 17:00:13,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3396 [2023-12-25 17:00:13,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:00:13,415 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:13,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-25 17:00:13,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:00:13,628 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:00:13,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:00:13,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1428491396, now seen corresponding path program 1 times [2023-12-25 17:00:13,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:00:13,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305586851] [2023-12-25 17:00:13,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:00:13,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:00:13,826 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:00:13,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [958956744] [2023-12-25 17:00:13,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:00:13,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:00:13,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:00:13,828 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:00:13,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-25 17:00:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:00:17,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 16815 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:00:17,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:00:17,952 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 44 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:00:17,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:00:18,078 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2023-12-25 17:00:18,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:00:18,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305586851] [2023-12-25 17:00:18,078 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:00:18,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958956744] [2023-12-25 17:00:18,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958956744] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:00:18,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:00:18,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:00:18,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804143505] [2023-12-25 17:00:18,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:00:18,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:00:18,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:00:18,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:00:18,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:00:18,086 INFO L87 Difference]: Start difference. First operand 5308 states and 8834 transitions. Second operand has 5 states, 5 states have (on average 626.8) internal successors, (3134), 5 states have internal predecessors, (3134), 0 states have call successors, (0), 0 states 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 17:00:22,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:00:22,291 INFO L93 Difference]: Finished difference Result 19080 states and 31630 transitions. [2023-12-25 17:00:22,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:00:22,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 626.8) internal successors, (3134), 5 states have internal predecessors, (3134), 0 states have call successors, (0), 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 3395 [2023-12-25 17:00:22,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:00:22,303 INFO L225 Difference]: With dead ends: 19080 [2023-12-25 17:00:22,303 INFO L226 Difference]: Without dead ends: 9963 [2023-12-25 17:00:22,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6789 GetRequests, 6780 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:00:22,311 INFO L413 NwaCegarLoop]: 13414 mSDtfsCounter, 20968 mSDsluCounter, 13111 mSDsCounter, 0 mSdLazyCounter, 5472 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20968 SdHoareTripleChecker+Valid, 26525 SdHoareTripleChecker+Invalid, 5846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 5472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-25 17:00:22,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20968 Valid, 26525 Invalid, 5846 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 5472 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-25 17:00:22,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9963 states. [2023-12-25 17:00:22,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9963 to 5310. [2023-12-25 17:00:22,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5310 states, 5309 states have (on average 1.6643435675268412) internal successors, (8836), 5309 states have internal predecessors, (8836), 0 states have call successors, (0), 0 states 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 17:00:22,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5310 states to 5310 states and 8836 transitions. [2023-12-25 17:00:22,376 INFO L78 Accepts]: Start accepts. Automaton has 5310 states and 8836 transitions. Word has length 3395 [2023-12-25 17:00:22,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:00:22,378 INFO L495 AbstractCegarLoop]: Abstraction has 5310 states and 8836 transitions. [2023-12-25 17:00:22,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 626.8) internal successors, (3134), 5 states have internal predecessors, (3134), 0 states have call successors, (0), 0 states 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 17:00:22,379 INFO L276 IsEmpty]: Start isEmpty. Operand 5310 states and 8836 transitions. [2023-12-25 17:00:22,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3397 [2023-12-25 17:00:22,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:00:22,437 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:22,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-25 17:00:22,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-25 17:00:22,638 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:00:22,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:00:22,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1993300224, now seen corresponding path program 1 times [2023-12-25 17:00:22,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:00:22,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882953517] [2023-12-25 17:00:22,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:00:22,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:00:22,935 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:00:22,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1591320919] [2023-12-25 17:00:22,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:00:22,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:00:22,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:00:22,938 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:00:22,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-25 17:00:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:00:26,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 16818 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:00:26,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:00:26,915 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 46 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:00:26,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:00:27,028 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2023-12-25 17:00:27,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:00:27,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882953517] [2023-12-25 17:00:27,029 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:00:27,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591320919] [2023-12-25 17:00:27,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591320919] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:00:27,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:00:27,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:00:27,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704379927] [2023-12-25 17:00:27,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:00:27,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:00:27,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:00:27,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:00:27,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:00:27,033 INFO L87 Difference]: Start difference. First operand 5310 states and 8836 transitions. Second operand has 5 states, 5 states have (on average 627.8) internal successors, (3139), 5 states have internal predecessors, (3139), 0 states have call successors, (0), 0 states 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 17:00:31,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:00:31,065 INFO L93 Difference]: Finished difference Result 19091 states and 31643 transitions. [2023-12-25 17:00:31,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:00:31,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 627.8) internal successors, (3139), 5 states have internal predecessors, (3139), 0 states have call successors, (0), 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 3396 [2023-12-25 17:00:31,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:00:31,079 INFO L225 Difference]: With dead ends: 19091 [2023-12-25 17:00:31,079 INFO L226 Difference]: Without dead ends: 9967 [2023-12-25 17:00:31,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6791 GetRequests, 6782 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:00:31,087 INFO L413 NwaCegarLoop]: 13401 mSDtfsCounter, 20936 mSDsluCounter, 13106 mSDsCounter, 0 mSdLazyCounter, 5468 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20936 SdHoareTripleChecker+Valid, 26507 SdHoareTripleChecker+Invalid, 5842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 5468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-25 17:00:31,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20936 Valid, 26507 Invalid, 5842 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 5468 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-25 17:00:31,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9967 states. [2023-12-25 17:00:31,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9967 to 5315. [2023-12-25 17:00:31,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5315 states, 5314 states have (on average 1.664094843808807) internal successors, (8843), 5314 states have internal predecessors, (8843), 0 states have call successors, (0), 0 states 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 17:00:31,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5315 states to 5315 states and 8843 transitions. [2023-12-25 17:00:31,147 INFO L78 Accepts]: Start accepts. Automaton has 5315 states and 8843 transitions. Word has length 3396 [2023-12-25 17:00:31,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:00:31,149 INFO L495 AbstractCegarLoop]: Abstraction has 5315 states and 8843 transitions. [2023-12-25 17:00:31,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 627.8) internal successors, (3139), 5 states have internal predecessors, (3139), 0 states have call successors, (0), 0 states 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 17:00:31,150 INFO L276 IsEmpty]: Start isEmpty. Operand 5315 states and 8843 transitions. [2023-12-25 17:00:31,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3398 [2023-12-25 17:00:31,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:00:31,208 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:31,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-25 17:00:31,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:00:31,417 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:00:31,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:00:31,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1453568454, now seen corresponding path program 1 times [2023-12-25 17:00:31,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:00:31,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489654642] [2023-12-25 17:00:31,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:00:31,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:00:31,629 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:00:31,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1262746962] [2023-12-25 17:00:31,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:00:31,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:00:31,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:00:31,631 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:00:31,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-25 17:00:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:00:35,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 16822 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:00:35,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:00:35,554 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 50 proven. 258 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:00:35,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:00:35,780 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-12-25 17:00:35,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:00:35,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489654642] [2023-12-25 17:00:35,780 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:00:35,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262746962] [2023-12-25 17:00:35,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262746962] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:00:35,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:00:35,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:00:35,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201576889] [2023-12-25 17:00:35,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:00:35,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:00:35,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:00:35,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:00:35,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:00:35,785 INFO L87 Difference]: Start difference. First operand 5315 states and 8843 transitions. Second operand has 5 states, 5 states have (on average 628.8) internal successors, (3144), 5 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states 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 17:00:39,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:00:39,864 INFO L93 Difference]: Finished difference Result 19173 states and 31774 transitions. [2023-12-25 17:00:39,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:00:39,865 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 628.8) internal successors, (3144), 5 states have internal predecessors, (3144), 0 states have call successors, (0), 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 3397 [2023-12-25 17:00:39,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:00:39,876 INFO L225 Difference]: With dead ends: 19173 [2023-12-25 17:00:39,876 INFO L226 Difference]: Without dead ends: 9971 [2023-12-25 17:00:39,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6793 GetRequests, 6784 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:00:39,884 INFO L413 NwaCegarLoop]: 13388 mSDtfsCounter, 20946 mSDsluCounter, 13099 mSDsCounter, 0 mSdLazyCounter, 5464 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20946 SdHoareTripleChecker+Valid, 26487 SdHoareTripleChecker+Invalid, 5838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 5464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-25 17:00:39,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20946 Valid, 26487 Invalid, 5838 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 5464 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-25 17:00:39,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9971 states. [2023-12-25 17:00:39,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9971 to 5320. [2023-12-25 17:00:39,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5320 states, 5319 states have (on average 1.6638465877044557) internal successors, (8850), 5319 states have internal predecessors, (8850), 0 states have call successors, (0), 0 states 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 17:00:39,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5320 states to 5320 states and 8850 transitions. [2023-12-25 17:00:39,942 INFO L78 Accepts]: Start accepts. Automaton has 5320 states and 8850 transitions. Word has length 3397 [2023-12-25 17:00:39,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:00:39,943 INFO L495 AbstractCegarLoop]: Abstraction has 5320 states and 8850 transitions. [2023-12-25 17:00:39,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 628.8) internal successors, (3144), 5 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states 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 17:00:39,944 INFO L276 IsEmpty]: Start isEmpty. Operand 5320 states and 8850 transitions. [2023-12-25 17:00:40,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3399 [2023-12-25 17:00:40,001 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:00:40,002 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:40,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-12-25 17:00:40,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:00:40,228 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:00:40,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:00:40,229 INFO L85 PathProgramCache]: Analyzing trace with hash 244934478, now seen corresponding path program 1 times [2023-12-25 17:00:40,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:00:40,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240340689] [2023-12-25 17:00:40,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:00:40,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:00:40,463 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:00:40,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [861978286] [2023-12-25 17:00:40,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:00:40,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:00:40,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:00:40,465 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:00:40,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-25 17:00:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:00:44,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 16825 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 17:00:44,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:00:44,710 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 54 proven. 254 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:00:44,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:00:44,874 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-25 17:00:44,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:00:44,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240340689] [2023-12-25 17:00:44,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:00:44,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861978286] [2023-12-25 17:00:44,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861978286] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:00:44,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:00:44,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-25 17:00:44,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321424279] [2023-12-25 17:00:44,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:00:44,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:00:44,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:00:44,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:00:44,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:00:44,879 INFO L87 Difference]: Start difference. First operand 5320 states and 8850 transitions. Second operand has 6 states, 6 states have (on average 524.8333333333334) internal successors, (3149), 6 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states 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 17:00:53,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:00:53,007 INFO L93 Difference]: Finished difference Result 23993 states and 39784 transitions. [2023-12-25 17:00:53,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 17:00:53,009 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 524.8333333333334) internal successors, (3149), 6 states have internal predecessors, (3149), 0 states have call successors, (0), 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 3398 [2023-12-25 17:00:53,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:00:53,020 INFO L225 Difference]: With dead ends: 23993 [2023-12-25 17:00:53,021 INFO L226 Difference]: Without dead ends: 14771 [2023-12-25 17:00:53,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6797 GetRequests, 6784 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-12-25 17:00:53,025 INFO L413 NwaCegarLoop]: 13378 mSDtfsCounter, 28702 mSDsluCounter, 38653 mSDsCounter, 0 mSdLazyCounter, 13046 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28702 SdHoareTripleChecker+Valid, 52031 SdHoareTripleChecker+Invalid, 13423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 13046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-12-25 17:00:53,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28702 Valid, 52031 Invalid, 13423 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [377 Valid, 13046 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-12-25 17:00:53,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14771 states. [2023-12-25 17:00:53,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14771 to 5325. [2023-12-25 17:00:53,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5325 states, 5324 states have (on average 1.6635987978963185) internal successors, (8857), 5324 states have internal predecessors, (8857), 0 states have call successors, (0), 0 states 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 17:00:53,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5325 states to 5325 states and 8857 transitions. [2023-12-25 17:00:53,087 INFO L78 Accepts]: Start accepts. Automaton has 5325 states and 8857 transitions. Word has length 3398 [2023-12-25 17:00:53,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:00:53,088 INFO L495 AbstractCegarLoop]: Abstraction has 5325 states and 8857 transitions. [2023-12-25 17:00:53,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 524.8333333333334) internal successors, (3149), 6 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states 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 17:00:53,089 INFO L276 IsEmpty]: Start isEmpty. Operand 5325 states and 8857 transitions. [2023-12-25 17:00:53,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3400 [2023-12-25 17:00:53,146 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:00:53,147 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:00:53,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-12-25 17:00:53,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-25 17:00:53,361 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:00:53,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:00:53,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1698338672, now seen corresponding path program 1 times [2023-12-25 17:00:53,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:00:53,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169971862] [2023-12-25 17:00:53,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:00:53,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:00:53,565 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:00:53,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1269537747] [2023-12-25 17:00:53,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:00:53,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:00:53,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:00:53,567 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:00:53,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-25 17:00:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:00:57,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 16829 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:00:57,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:00:57,490 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 58 proven. 250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:00:57,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:00:57,616 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-12-25 17:00:57,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:00:57,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169971862] [2023-12-25 17:00:57,617 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:00:57,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269537747] [2023-12-25 17:00:57,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269537747] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:00:57,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:00:57,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:00:57,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523672567] [2023-12-25 17:00:57,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:00:57,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:00:57,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:00:57,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:00:57,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:00:57,621 INFO L87 Difference]: Start difference. First operand 5325 states and 8857 transitions. Second operand has 5 states, 5 states have (on average 630.8) internal successors, (3154), 5 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states 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 17:01:02,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:01:02,255 INFO L93 Difference]: Finished difference Result 19221 states and 31842 transitions. [2023-12-25 17:01:02,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:01:02,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 630.8) internal successors, (3154), 5 states have internal predecessors, (3154), 0 states have call successors, (0), 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 3399 [2023-12-25 17:01:02,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:01:02,267 INFO L225 Difference]: With dead ends: 19221 [2023-12-25 17:01:02,268 INFO L226 Difference]: Without dead ends: 9979 [2023-12-25 17:01:02,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6797 GetRequests, 6788 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:01:02,274 INFO L413 NwaCegarLoop]: 13362 mSDtfsCounter, 14307 mSDsluCounter, 19767 mSDsCounter, 0 mSdLazyCounter, 7416 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14307 SdHoareTripleChecker+Valid, 33129 SdHoareTripleChecker+Invalid, 7790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 7416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-25 17:01:02,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14307 Valid, 33129 Invalid, 7790 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 7416 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-25 17:01:02,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9979 states. [2023-12-25 17:01:02,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9979 to 5330. [2023-12-25 17:01:02,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5330 states, 5329 states have (on average 1.6633514730718708) internal successors, (8864), 5329 states have internal predecessors, (8864), 0 states have call successors, (0), 0 states 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 17:01:02,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5330 states to 5330 states and 8864 transitions. [2023-12-25 17:01:02,329 INFO L78 Accepts]: Start accepts. Automaton has 5330 states and 8864 transitions. Word has length 3399 [2023-12-25 17:01:02,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:01:02,330 INFO L495 AbstractCegarLoop]: Abstraction has 5330 states and 8864 transitions. [2023-12-25 17:01:02,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 630.8) internal successors, (3154), 5 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states 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 17:01:02,331 INFO L276 IsEmpty]: Start isEmpty. Operand 5330 states and 8864 transitions. [2023-12-25 17:01:02,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3401 [2023-12-25 17:01:02,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:01:02,388 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:02,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-12-25 17:01:02,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-25 17:01:02,589 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:01:02,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:01:02,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1324993308, now seen corresponding path program 1 times [2023-12-25 17:01:02,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:01:02,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750848734] [2023-12-25 17:01:02,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:01:02,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:01:02,866 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:01:02,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [556414288] [2023-12-25 17:01:02,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:01:02,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:01:02,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:01:02,869 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:01:02,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-25 17:01:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:01:06,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 16832 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:01:06,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:01:06,747 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 62 proven. 246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:01:06,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:01:06,874 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-12-25 17:01:06,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:01:06,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750848734] [2023-12-25 17:01:06,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:01:06,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556414288] [2023-12-25 17:01:06,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556414288] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:01:06,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:01:06,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:01:06,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327404360] [2023-12-25 17:01:06,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:01:06,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:01:06,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:01:06,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:01:06,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:01:06,879 INFO L87 Difference]: Start difference. First operand 5330 states and 8864 transitions. Second operand has 5 states, 5 states have (on average 631.8) internal successors, (3159), 5 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states 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 17:01:11,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:01:11,641 INFO L93 Difference]: Finished difference Result 19245 states and 31876 transitions. [2023-12-25 17:01:11,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:01:11,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 631.8) internal successors, (3159), 5 states have internal predecessors, (3159), 0 states have call successors, (0), 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 3400 [2023-12-25 17:01:11,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:01:11,653 INFO L225 Difference]: With dead ends: 19245 [2023-12-25 17:01:11,653 INFO L226 Difference]: Without dead ends: 9983 [2023-12-25 17:01:11,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6799 GetRequests, 6790 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:01:11,660 INFO L413 NwaCegarLoop]: 13349 mSDtfsCounter, 14299 mSDsluCounter, 19755 mSDsCounter, 0 mSdLazyCounter, 7408 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14299 SdHoareTripleChecker+Valid, 33104 SdHoareTripleChecker+Invalid, 7782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 7408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-25 17:01:11,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14299 Valid, 33104 Invalid, 7782 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 7408 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-25 17:01:11,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9983 states. [2023-12-25 17:01:11,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9983 to 5335. [2023-12-25 17:01:11,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5335 states, 5334 states have (on average 1.6631046119235096) internal successors, (8871), 5334 states have internal predecessors, (8871), 0 states have call successors, (0), 0 states 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 17:01:11,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5335 states to 5335 states and 8871 transitions. [2023-12-25 17:01:11,719 INFO L78 Accepts]: Start accepts. Automaton has 5335 states and 8871 transitions. Word has length 3400 [2023-12-25 17:01:11,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:01:11,721 INFO L495 AbstractCegarLoop]: Abstraction has 5335 states and 8871 transitions. [2023-12-25 17:01:11,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 631.8) internal successors, (3159), 5 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states 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 17:01:11,721 INFO L276 IsEmpty]: Start isEmpty. Operand 5335 states and 8871 transitions. [2023-12-25 17:01:11,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3402 [2023-12-25 17:01:11,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:01:11,779 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:11,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-12-25 17:01:11,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-25 17:01:11,992 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:01:11,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:01:11,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1329870810, now seen corresponding path program 1 times [2023-12-25 17:01:11,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:01:11,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982427742] [2023-12-25 17:01:11,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:01:11,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:01:12,198 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:01:12,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [386794544] [2023-12-25 17:01:12,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:01:12,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:01:12,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:01:12,200 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:01:12,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-25 17:01:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:01:15,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 16836 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:01:15,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:01:16,281 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 66 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:01:16,282 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:01:16,413 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-12-25 17:01:16,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:01:16,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982427742] [2023-12-25 17:01:16,413 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:01:16,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386794544] [2023-12-25 17:01:16,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386794544] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:01:16,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:01:16,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:01:16,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395960100] [2023-12-25 17:01:16,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:01:16,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:01:16,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:01:16,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:01:16,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:01:16,417 INFO L87 Difference]: Start difference. First operand 5335 states and 8871 transitions. Second operand has 5 states, 5 states have (on average 632.8) internal successors, (3164), 5 states have internal predecessors, (3164), 0 states have call successors, (0), 0 states 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 17:01:20,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:01:20,512 INFO L93 Difference]: Finished difference Result 19269 states and 31910 transitions. [2023-12-25 17:01:20,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:01:20,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 632.8) internal successors, (3164), 5 states have internal predecessors, (3164), 0 states have call successors, (0), 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 3401 [2023-12-25 17:01:20,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:01:20,525 INFO L225 Difference]: With dead ends: 19269 [2023-12-25 17:01:20,525 INFO L226 Difference]: Without dead ends: 9987 [2023-12-25 17:01:20,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6801 GetRequests, 6792 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:01:20,533 INFO L413 NwaCegarLoop]: 13336 mSDtfsCounter, 20871 mSDsluCounter, 13076 mSDsCounter, 0 mSdLazyCounter, 5448 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20871 SdHoareTripleChecker+Valid, 26412 SdHoareTripleChecker+Invalid, 5822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 5448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-25 17:01:20,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20871 Valid, 26412 Invalid, 5822 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 5448 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-25 17:01:20,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9987 states. [2023-12-25 17:01:20,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9987 to 5340. [2023-12-25 17:01:20,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5340 states, 5339 states have (on average 1.6628582131485297) internal successors, (8878), 5339 states have internal predecessors, (8878), 0 states have call successors, (0), 0 states 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 17:01:20,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5340 states to 5340 states and 8878 transitions. [2023-12-25 17:01:20,597 INFO L78 Accepts]: Start accepts. Automaton has 5340 states and 8878 transitions. Word has length 3401 [2023-12-25 17:01:20,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:01:20,598 INFO L495 AbstractCegarLoop]: Abstraction has 5340 states and 8878 transitions. [2023-12-25 17:01:20,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 632.8) internal successors, (3164), 5 states have internal predecessors, (3164), 0 states have call successors, (0), 0 states 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 17:01:20,599 INFO L276 IsEmpty]: Start isEmpty. Operand 5340 states and 8878 transitions. [2023-12-25 17:01:20,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3403 [2023-12-25 17:01:20,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:01:20,657 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:20,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-12-25 17:01:20,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-25 17:01:20,858 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:01:20,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:01:20,858 INFO L85 PathProgramCache]: Analyzing trace with hash -400280982, now seen corresponding path program 1 times [2023-12-25 17:01:20,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:01:20,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770911571] [2023-12-25 17:01:20,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:01:20,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:01:21,070 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:01:21,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [751808353] [2023-12-25 17:01:21,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:01:21,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:01:21,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:01:21,072 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:01:21,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-25 17:01:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:01:24,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 16839 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:01:24,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:01:25,083 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 70 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:01:25,083 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:01:25,227 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-12-25 17:01:25,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:01:25,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770911571] [2023-12-25 17:01:25,228 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:01:25,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751808353] [2023-12-25 17:01:25,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751808353] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:01:25,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:01:25,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:01:25,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766434276] [2023-12-25 17:01:25,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:01:25,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:01:25,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:01:25,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:01:25,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:01:25,233 INFO L87 Difference]: Start difference. First operand 5340 states and 8878 transitions. Second operand has 5 states, 5 states have (on average 633.8) internal successors, (3169), 5 states have internal predecessors, (3169), 0 states have call successors, (0), 0 states 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 17:01:29,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:01:29,202 INFO L93 Difference]: Finished difference Result 19293 states and 31944 transitions. [2023-12-25 17:01:29,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:01:29,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 633.8) internal successors, (3169), 5 states have internal predecessors, (3169), 0 states have call successors, (0), 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 3402 [2023-12-25 17:01:29,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:01:29,213 INFO L225 Difference]: With dead ends: 19293 [2023-12-25 17:01:29,214 INFO L226 Difference]: Without dead ends: 9991 [2023-12-25 17:01:29,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6803 GetRequests, 6794 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:01:29,221 INFO L413 NwaCegarLoop]: 13323 mSDtfsCounter, 20858 mSDsluCounter, 13070 mSDsCounter, 0 mSdLazyCounter, 5444 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20858 SdHoareTripleChecker+Valid, 26393 SdHoareTripleChecker+Invalid, 5818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 5444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-25 17:01:29,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20858 Valid, 26393 Invalid, 5818 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 5444 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-25 17:01:29,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9991 states. [2023-12-25 17:01:29,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9991 to 5345. [2023-12-25 17:01:29,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5345 states, 5344 states have (on average 1.6626122754491017) internal successors, (8885), 5344 states have internal predecessors, (8885), 0 states have call successors, (0), 0 states 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 17:01:29,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5345 states to 5345 states and 8885 transitions. [2023-12-25 17:01:29,282 INFO L78 Accepts]: Start accepts. Automaton has 5345 states and 8885 transitions. Word has length 3402 [2023-12-25 17:01:29,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:01:29,283 INFO L495 AbstractCegarLoop]: Abstraction has 5345 states and 8885 transitions. [2023-12-25 17:01:29,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 633.8) internal successors, (3169), 5 states have internal predecessors, (3169), 0 states have call successors, (0), 0 states 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 17:01:29,284 INFO L276 IsEmpty]: Start isEmpty. Operand 5345 states and 8885 transitions. [2023-12-25 17:01:29,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3404 [2023-12-25 17:01:29,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:01:29,415 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:29,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-12-25 17:01:29,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-25 17:01:29,632 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:01:29,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:01:29,633 INFO L85 PathProgramCache]: Analyzing trace with hash -273432484, now seen corresponding path program 1 times [2023-12-25 17:01:29,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:01:29,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776515509] [2023-12-25 17:01:29,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:01:29,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:01:29,838 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:01:29,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1174116558] [2023-12-25 17:01:29,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:01:29,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:01:29,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:01:29,858 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:01:29,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-25 17:01:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:01:33,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 16843 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:01:33,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:01:33,746 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 74 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:01:33,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:01:33,883 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-12-25 17:01:33,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:01:33,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776515509] [2023-12-25 17:01:33,884 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:01:33,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174116558] [2023-12-25 17:01:33,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174116558] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:01:33,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:01:33,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:01:33,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919485499] [2023-12-25 17:01:33,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:01:33,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:01:33,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:01:33,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:01:33,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:01:33,888 INFO L87 Difference]: Start difference. First operand 5345 states and 8885 transitions. Second operand has 5 states, 5 states have (on average 634.8) internal successors, (3174), 5 states have internal predecessors, (3174), 0 states have call successors, (0), 0 states 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 17:01:37,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:01:37,896 INFO L93 Difference]: Finished difference Result 19317 states and 31978 transitions. [2023-12-25 17:01:37,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:01:37,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 634.8) internal successors, (3174), 5 states have internal predecessors, (3174), 0 states have call successors, (0), 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 3403 [2023-12-25 17:01:37,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:01:37,909 INFO L225 Difference]: With dead ends: 19317 [2023-12-25 17:01:37,910 INFO L226 Difference]: Without dead ends: 9995 [2023-12-25 17:01:37,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6805 GetRequests, 6796 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:01:37,918 INFO L413 NwaCegarLoop]: 13310 mSDtfsCounter, 20845 mSDsluCounter, 13064 mSDsCounter, 0 mSdLazyCounter, 5440 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20845 SdHoareTripleChecker+Valid, 26374 SdHoareTripleChecker+Invalid, 5814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 5440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-25 17:01:37,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20845 Valid, 26374 Invalid, 5814 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 5440 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-25 17:01:37,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9995 states. [2023-12-25 17:01:37,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9995 to 5350. [2023-12-25 17:01:37,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5350 states, 5349 states have (on average 1.662366797532249) internal successors, (8892), 5349 states have internal predecessors, (8892), 0 states have call successors, (0), 0 states 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 17:01:37,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5350 states to 5350 states and 8892 transitions. [2023-12-25 17:01:37,981 INFO L78 Accepts]: Start accepts. Automaton has 5350 states and 8892 transitions. Word has length 3403 [2023-12-25 17:01:37,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:01:37,982 INFO L495 AbstractCegarLoop]: Abstraction has 5350 states and 8892 transitions. [2023-12-25 17:01:37,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 634.8) internal successors, (3174), 5 states have internal predecessors, (3174), 0 states have call successors, (0), 0 states 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 17:01:37,983 INFO L276 IsEmpty]: Start isEmpty. Operand 5350 states and 8892 transitions. [2023-12-25 17:01:38,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3405 [2023-12-25 17:01:38,041 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:01:38,042 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:38,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-12-25 17:01:38,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-12-25 17:01:38,243 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:01:38,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:01:38,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1522336456, now seen corresponding path program 1 times [2023-12-25 17:01:38,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:01:38,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125938774] [2023-12-25 17:01:38,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:01:38,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:01:38,447 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:01:38,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1212603804] [2023-12-25 17:01:38,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:01:38,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:01:38,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:01:38,449 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:01:38,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-25 17:01:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:01:42,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 16846 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:01:42,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:01:42,496 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 78 proven. 230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:01:42,496 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:01:42,649 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-12-25 17:01:42,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:01:42,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125938774] [2023-12-25 17:01:42,650 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:01:42,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212603804] [2023-12-25 17:01:42,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212603804] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:01:42,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:01:42,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:01:42,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622110271] [2023-12-25 17:01:42,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:01:42,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:01:42,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:01:42,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:01:42,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:01:42,654 INFO L87 Difference]: Start difference. First operand 5350 states and 8892 transitions. Second operand has 5 states, 5 states have (on average 635.8) internal successors, (3179), 5 states have internal predecessors, (3179), 0 states have call successors, (0), 0 states 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 17:01:46,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:01:46,610 INFO L93 Difference]: Finished difference Result 19341 states and 32012 transitions. [2023-12-25 17:01:46,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:01:46,612 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 635.8) internal successors, (3179), 5 states have internal predecessors, (3179), 0 states have call successors, (0), 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 3404 [2023-12-25 17:01:46,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:01:46,623 INFO L225 Difference]: With dead ends: 19341 [2023-12-25 17:01:46,623 INFO L226 Difference]: Without dead ends: 9999 [2023-12-25 17:01:46,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6807 GetRequests, 6798 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:01:46,631 INFO L413 NwaCegarLoop]: 13297 mSDtfsCounter, 20862 mSDsluCounter, 13057 mSDsCounter, 0 mSdLazyCounter, 5436 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20862 SdHoareTripleChecker+Valid, 26354 SdHoareTripleChecker+Invalid, 5810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 5436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-25 17:01:46,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20862 Valid, 26354 Invalid, 5810 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 5436 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-25 17:01:46,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9999 states. [2023-12-25 17:01:46,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9999 to 5355. [2023-12-25 17:01:46,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5355 states, 5354 states have (on average 1.6621217781098245) internal successors, (8899), 5354 states have internal predecessors, (8899), 0 states have call successors, (0), 0 states 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 17:01:46,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5355 states to 5355 states and 8899 transitions. [2023-12-25 17:01:46,693 INFO L78 Accepts]: Start accepts. Automaton has 5355 states and 8899 transitions. Word has length 3404 [2023-12-25 17:01:46,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:01:46,695 INFO L495 AbstractCegarLoop]: Abstraction has 5355 states and 8899 transitions. [2023-12-25 17:01:46,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 635.8) internal successors, (3179), 5 states have internal predecessors, (3179), 0 states have call successors, (0), 0 states 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 17:01:46,695 INFO L276 IsEmpty]: Start isEmpty. Operand 5355 states and 8899 transitions. [2023-12-25 17:01:46,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3406 [2023-12-25 17:01:46,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:01:46,754 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:46,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-12-25 17:01:46,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-12-25 17:01:46,955 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:01:46,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:01:46,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1204707346, now seen corresponding path program 1 times [2023-12-25 17:01:46,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:01:46,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842767220] [2023-12-25 17:01:46,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:01:46,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:01:47,173 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:01:47,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1449232619] [2023-12-25 17:01:47,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:01:47,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:01:47,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:01:47,174 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:01:47,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-25 17:01:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:01:50,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 16850 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:01:50,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:01:51,091 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 82 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:01:51,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:01:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2023-12-25 17:01:51,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:01:51,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842767220] [2023-12-25 17:01:51,243 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:01:51,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449232619] [2023-12-25 17:01:51,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449232619] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:01:51,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:01:51,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:01:51,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186591228] [2023-12-25 17:01:51,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:01:51,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:01:51,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:01:51,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:01:51,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:01:51,247 INFO L87 Difference]: Start difference. First operand 5355 states and 8899 transitions. Second operand has 5 states, 5 states have (on average 636.8) internal successors, (3184), 5 states have internal predecessors, (3184), 0 states have call successors, (0), 0 states 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 17:01:55,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:01:55,301 INFO L93 Difference]: Finished difference Result 19365 states and 32046 transitions. [2023-12-25 17:01:55,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:01:55,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 636.8) internal successors, (3184), 5 states have internal predecessors, (3184), 0 states have call successors, (0), 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 3405 [2023-12-25 17:01:55,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:01:55,311 INFO L225 Difference]: With dead ends: 19365 [2023-12-25 17:01:55,311 INFO L226 Difference]: Without dead ends: 10003 [2023-12-25 17:01:55,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6809 GetRequests, 6800 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:01:55,316 INFO L413 NwaCegarLoop]: 13284 mSDtfsCounter, 20850 mSDsluCounter, 13051 mSDsCounter, 0 mSdLazyCounter, 5432 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20850 SdHoareTripleChecker+Valid, 26335 SdHoareTripleChecker+Invalid, 5806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 5432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-25 17:01:55,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20850 Valid, 26335 Invalid, 5806 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 5432 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-25 17:01:55,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10003 states. [2023-12-25 17:01:55,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10003 to 5360. [2023-12-25 17:01:55,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5360 states, 5359 states have (on average 1.6618772158984885) internal successors, (8906), 5359 states have internal predecessors, (8906), 0 states have call successors, (0), 0 states 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 17:01:55,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5360 states to 5360 states and 8906 transitions. [2023-12-25 17:01:55,368 INFO L78 Accepts]: Start accepts. Automaton has 5360 states and 8906 transitions. Word has length 3405 [2023-12-25 17:01:55,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:01:55,369 INFO L495 AbstractCegarLoop]: Abstraction has 5360 states and 8906 transitions. [2023-12-25 17:01:55,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 636.8) internal successors, (3184), 5 states have internal predecessors, (3184), 0 states have call successors, (0), 0 states 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 17:01:55,370 INFO L276 IsEmpty]: Start isEmpty. Operand 5360 states and 8906 transitions. [2023-12-25 17:01:55,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3407 [2023-12-25 17:01:55,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:01:55,427 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:01:55,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-12-25 17:01:55,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-12-25 17:01:55,628 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:01:55,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:01:55,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1126659194, now seen corresponding path program 1 times [2023-12-25 17:01:55,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:01:55,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714036482] [2023-12-25 17:01:55,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:01:55,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:01:55,837 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:01:55,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1995823511] [2023-12-25 17:01:55,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:01:55,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:01:55,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:01:55,839 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:01:55,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-25 17:01:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:01:59,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 16853 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:01:59,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:01:59,752 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 86 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:01:59,753 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:01:59,915 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-12-25 17:01:59,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:01:59,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714036482] [2023-12-25 17:01:59,916 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:01:59,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995823511] [2023-12-25 17:01:59,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995823511] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:01:59,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:01:59,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:01:59,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318867590] [2023-12-25 17:01:59,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:01:59,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:01:59,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:01:59,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:01:59,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:01:59,919 INFO L87 Difference]: Start difference. First operand 5360 states and 8906 transitions. Second operand has 5 states, 5 states have (on average 637.8) internal successors, (3189), 5 states have internal predecessors, (3189), 0 states have call successors, (0), 0 states 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 17:02:04,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:02:04,356 INFO L93 Difference]: Finished difference Result 19389 states and 32080 transitions. [2023-12-25 17:02:04,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:02:04,357 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 637.8) internal successors, (3189), 5 states have internal predecessors, (3189), 0 states have call successors, (0), 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 3406 [2023-12-25 17:02:04,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:02:04,369 INFO L225 Difference]: With dead ends: 19389 [2023-12-25 17:02:04,369 INFO L226 Difference]: Without dead ends: 10007 [2023-12-25 17:02:04,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6811 GetRequests, 6802 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:02:04,377 INFO L413 NwaCegarLoop]: 13271 mSDtfsCounter, 14283 mSDsluCounter, 19243 mSDsCounter, 0 mSdLazyCounter, 6928 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14283 SdHoareTripleChecker+Valid, 32514 SdHoareTripleChecker+Invalid, 7302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 6928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-25 17:02:04,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14283 Valid, 32514 Invalid, 7302 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 6928 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-25 17:02:04,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10007 states. [2023-12-25 17:02:04,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10007 to 5365. [2023-12-25 17:02:04,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5365 states, 5364 states have (on average 1.6616331096196868) internal successors, (8913), 5364 states have internal predecessors, (8913), 0 states have call successors, (0), 0 states 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 17:02:04,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5365 states to 5365 states and 8913 transitions. [2023-12-25 17:02:04,434 INFO L78 Accepts]: Start accepts. Automaton has 5365 states and 8913 transitions. Word has length 3406 [2023-12-25 17:02:04,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:02:04,435 INFO L495 AbstractCegarLoop]: Abstraction has 5365 states and 8913 transitions. [2023-12-25 17:02:04,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 637.8) internal successors, (3189), 5 states have internal predecessors, (3189), 0 states have call successors, (0), 0 states 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 17:02:04,436 INFO L276 IsEmpty]: Start isEmpty. Operand 5365 states and 8913 transitions. [2023-12-25 17:02:04,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3408 [2023-12-25 17:02:04,493 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:02:04,494 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:02:04,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-12-25 17:02:04,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:02:04,695 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:02:04,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:02:04,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1500543160, now seen corresponding path program 1 times [2023-12-25 17:02:04,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:02:04,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943172923] [2023-12-25 17:02:04,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:02:04,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:02:04,894 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:02:04,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [122735469] [2023-12-25 17:02:04,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:02:04,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:02:04,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:02:04,896 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:02:04,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-12-25 17:02:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:02:08,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 16857 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:02:08,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:02:09,019 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 90 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:02:09,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:02:09,184 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2023-12-25 17:02:09,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:02:09,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943172923] [2023-12-25 17:02:09,185 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:02:09,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122735469] [2023-12-25 17:02:09,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122735469] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:02:09,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:02:09,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:02:09,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854461078] [2023-12-25 17:02:09,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:02:09,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:02:09,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:02:09,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:02:09,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:02:09,189 INFO L87 Difference]: Start difference. First operand 5365 states and 8913 transitions. Second operand has 5 states, 5 states have (on average 638.4) internal successors, (3192), 5 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 17:02:13,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:02:13,168 INFO L93 Difference]: Finished difference Result 19410 states and 32109 transitions. [2023-12-25 17:02:13,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:02:13,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 638.4) internal successors, (3192), 5 states have internal predecessors, (3192), 0 states have call successors, (0), 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 3407 [2023-12-25 17:02:13,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:02:13,180 INFO L225 Difference]: With dead ends: 19410 [2023-12-25 17:02:13,180 INFO L226 Difference]: Without dead ends: 10008 [2023-12-25 17:02:13,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6813 GetRequests, 6804 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:02:13,188 INFO L413 NwaCegarLoop]: 13263 mSDtfsCounter, 20828 mSDsluCounter, 13040 mSDsCounter, 0 mSdLazyCounter, 5428 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20828 SdHoareTripleChecker+Valid, 26303 SdHoareTripleChecker+Invalid, 5802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 5428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-25 17:02:13,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20828 Valid, 26303 Invalid, 5802 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 5428 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-25 17:02:13,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10008 states. [2023-12-25 17:02:13,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10008 to 5367. [2023-12-25 17:02:13,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5367 states, 5366 states have (on average 1.6613865076407006) internal successors, (8915), 5366 states have internal predecessors, (8915), 0 states have call successors, (0), 0 states 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 17:02:13,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5367 states to 5367 states and 8915 transitions. [2023-12-25 17:02:13,253 INFO L78 Accepts]: Start accepts. Automaton has 5367 states and 8915 transitions. Word has length 3407 [2023-12-25 17:02:13,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:02:13,255 INFO L495 AbstractCegarLoop]: Abstraction has 5367 states and 8915 transitions. [2023-12-25 17:02:13,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 638.4) internal successors, (3192), 5 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 17:02:13,255 INFO L276 IsEmpty]: Start isEmpty. Operand 5367 states and 8915 transitions. [2023-12-25 17:02:13,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3409 [2023-12-25 17:02:13,313 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:02:13,314 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:02:13,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-12-25 17:02:13,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:02:13,515 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:02:13,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:02:13,515 INFO L85 PathProgramCache]: Analyzing trace with hash 458031534, now seen corresponding path program 1 times [2023-12-25 17:02:13,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:02:13,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092867834] [2023-12-25 17:02:13,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:02:13,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:02:13,723 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:02:13,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1443769064] [2023-12-25 17:02:13,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:02:13,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:02:13,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:02:13,725 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:02:13,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-12-25 17:02:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:02:17,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 16860 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:02:17,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:02:17,724 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 92 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:02:17,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:02:18,066 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2023-12-25 17:02:18,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:02:18,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092867834] [2023-12-25 17:02:18,066 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:02:18,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443769064] [2023-12-25 17:02:18,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443769064] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:02:18,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:02:18,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:02:18,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413619190] [2023-12-25 17:02:18,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:02:18,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:02:18,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:02:18,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:02:18,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:02:18,071 INFO L87 Difference]: Start difference. First operand 5367 states and 8915 transitions. Second operand has 5 states, 5 states have (on average 639.4) internal successors, (3197), 5 states have internal predecessors, (3197), 0 states have call successors, (0), 0 states 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 17:02:22,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:02:22,525 INFO L93 Difference]: Finished difference Result 19421 states and 32122 transitions. [2023-12-25 17:02:22,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:02:22,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 639.4) internal successors, (3197), 5 states have internal predecessors, (3197), 0 states have call successors, (0), 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 3408 [2023-12-25 17:02:22,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:02:22,540 INFO L225 Difference]: With dead ends: 19421 [2023-12-25 17:02:22,540 INFO L226 Difference]: Without dead ends: 10012 [2023-12-25 17:02:22,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6815 GetRequests, 6806 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:02:22,549 INFO L413 NwaCegarLoop]: 13250 mSDtfsCounter, 14271 mSDsluCounter, 19226 mSDsCounter, 0 mSdLazyCounter, 6924 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14271 SdHoareTripleChecker+Valid, 32476 SdHoareTripleChecker+Invalid, 7298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 6924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-25 17:02:22,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14271 Valid, 32476 Invalid, 7298 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 6924 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-25 17:02:22,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10012 states. [2023-12-25 17:02:22,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10012 to 5372. [2023-12-25 17:02:22,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5372 states, 5371 states have (on average 1.6611431763172593) internal successors, (8922), 5371 states have internal predecessors, (8922), 0 states have call successors, (0), 0 states 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 17:02:22,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5372 states to 5372 states and 8922 transitions. [2023-12-25 17:02:22,616 INFO L78 Accepts]: Start accepts. Automaton has 5372 states and 8922 transitions. Word has length 3408 [2023-12-25 17:02:22,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:02:22,618 INFO L495 AbstractCegarLoop]: Abstraction has 5372 states and 8922 transitions. [2023-12-25 17:02:22,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 639.4) internal successors, (3197), 5 states have internal predecessors, (3197), 0 states have call successors, (0), 0 states 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 17:02:22,618 INFO L276 IsEmpty]: Start isEmpty. Operand 5372 states and 8922 transitions. [2023-12-25 17:02:22,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3410 [2023-12-25 17:02:22,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:02:22,677 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:02:22,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-12-25 17:02:22,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-12-25 17:02:22,878 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:02:22,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:02:22,879 INFO L85 PathProgramCache]: Analyzing trace with hash -746625092, now seen corresponding path program 1 times [2023-12-25 17:02:22,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:02:22,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092386410] [2023-12-25 17:02:22,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:02:22,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:02:23,085 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:02:23,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [768745877] [2023-12-25 17:02:23,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:02:23,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:02:23,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:02:23,087 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:02:23,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-12-25 17:02:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:02:26,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 16863 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:02:26,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:02:27,114 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 96 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:02:27,114 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:02:27,277 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-12-25 17:02:27,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:02:27,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092386410] [2023-12-25 17:02:27,278 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:02:27,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768745877] [2023-12-25 17:02:27,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768745877] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:02:27,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:02:27,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:02:27,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048617904] [2023-12-25 17:02:27,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:02:27,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:02:27,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:02:27,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:02:27,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:02:27,282 INFO L87 Difference]: Start difference. First operand 5372 states and 8922 transitions. Second operand has 5 states, 5 states have (on average 640.4) internal successors, (3202), 5 states have internal predecessors, (3202), 0 states have call successors, (0), 0 states 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 17:02:31,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:02:31,197 INFO L93 Difference]: Finished difference Result 19448 states and 32161 transitions. [2023-12-25 17:02:31,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:02:31,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 640.4) internal successors, (3202), 5 states have internal predecessors, (3202), 0 states have call successors, (0), 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 3409 [2023-12-25 17:02:31,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:02:31,209 INFO L225 Difference]: With dead ends: 19448 [2023-12-25 17:02:31,209 INFO L226 Difference]: Without dead ends: 10016 [2023-12-25 17:02:31,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6817 GetRequests, 6808 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:02:31,216 INFO L413 NwaCegarLoop]: 13237 mSDtfsCounter, 20806 mSDsluCounter, 13028 mSDsCounter, 0 mSdLazyCounter, 5420 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20806 SdHoareTripleChecker+Valid, 26265 SdHoareTripleChecker+Invalid, 5794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 5420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-25 17:02:31,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20806 Valid, 26265 Invalid, 5794 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 5420 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-25 17:02:31,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10016 states. [2023-12-25 17:02:31,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10016 to 5377. [2023-12-25 17:02:31,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5377 states, 5376 states have (on average 1.6609002976190477) internal successors, (8929), 5376 states have internal predecessors, (8929), 0 states have call successors, (0), 0 states 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 17:02:31,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5377 states to 5377 states and 8929 transitions. [2023-12-25 17:02:31,279 INFO L78 Accepts]: Start accepts. Automaton has 5377 states and 8929 transitions. Word has length 3409 [2023-12-25 17:02:31,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:02:31,280 INFO L495 AbstractCegarLoop]: Abstraction has 5377 states and 8929 transitions. [2023-12-25 17:02:31,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 640.4) internal successors, (3202), 5 states have internal predecessors, (3202), 0 states have call successors, (0), 0 states 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 17:02:31,281 INFO L276 IsEmpty]: Start isEmpty. Operand 5377 states and 8929 transitions. [2023-12-25 17:02:31,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3411 [2023-12-25 17:02:31,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:02:31,438 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:02:31,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-12-25 17:02:31,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-12-25 17:02:31,641 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:02:31,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:02:31,642 INFO L85 PathProgramCache]: Analyzing trace with hash -538615750, now seen corresponding path program 1 times [2023-12-25 17:02:31,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:02:31,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197740751] [2023-12-25 17:02:31,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:02:31,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:02:31,845 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:02:31,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1595160924] [2023-12-25 17:02:31,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:02:31,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:02:31,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:02:31,847 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:02:31,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-12-25 17:02:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:02:35,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 16866 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:02:35,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:02:35,810 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 100 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:02:35,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:02:35,993 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-12-25 17:02:35,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:02:35,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197740751] [2023-12-25 17:02:35,994 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:02:35,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595160924] [2023-12-25 17:02:35,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595160924] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:02:35,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:02:35,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:02:35,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921442449] [2023-12-25 17:02:35,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:02:35,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:02:35,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:02:35,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:02:35,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:02:35,999 INFO L87 Difference]: Start difference. First operand 5377 states and 8929 transitions. Second operand has 5 states, 5 states have (on average 641.4) internal successors, (3207), 5 states have internal predecessors, (3207), 0 states have call successors, (0), 0 states 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 17:02:40,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:02:40,002 INFO L93 Difference]: Finished difference Result 19472 states and 32195 transitions. [2023-12-25 17:02:40,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:02:40,004 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 641.4) internal successors, (3207), 5 states have internal predecessors, (3207), 0 states have call successors, (0), 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 3410 [2023-12-25 17:02:40,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:02:40,018 INFO L225 Difference]: With dead ends: 19472 [2023-12-25 17:02:40,018 INFO L226 Difference]: Without dead ends: 10020 [2023-12-25 17:02:40,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6819 GetRequests, 6810 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:02:40,027 INFO L413 NwaCegarLoop]: 13224 mSDtfsCounter, 20758 mSDsluCounter, 13023 mSDsCounter, 0 mSdLazyCounter, 5416 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20758 SdHoareTripleChecker+Valid, 26247 SdHoareTripleChecker+Invalid, 5790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 5416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-25 17:02:40,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20758 Valid, 26247 Invalid, 5790 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 5416 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-25 17:02:40,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10020 states. [2023-12-25 17:02:40,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10020 to 5382. [2023-12-25 17:02:40,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5382 states, 5381 states have (on average 1.6606578702843338) internal successors, (8936), 5381 states have internal predecessors, (8936), 0 states have call successors, (0), 0 states 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 17:02:40,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5382 states to 5382 states and 8936 transitions. [2023-12-25 17:02:40,091 INFO L78 Accepts]: Start accepts. Automaton has 5382 states and 8936 transitions. Word has length 3410 [2023-12-25 17:02:40,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:02:40,093 INFO L495 AbstractCegarLoop]: Abstraction has 5382 states and 8936 transitions. [2023-12-25 17:02:40,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 641.4) internal successors, (3207), 5 states have internal predecessors, (3207), 0 states have call successors, (0), 0 states 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 17:02:40,093 INFO L276 IsEmpty]: Start isEmpty. Operand 5382 states and 8936 transitions. [2023-12-25 17:02:40,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3412 [2023-12-25 17:02:40,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:02:40,151 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:02:40,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-12-25 17:02:40,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-12-25 17:02:40,352 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:02:40,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:02:40,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1760623152, now seen corresponding path program 1 times [2023-12-25 17:02:40,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:02:40,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32257125] [2023-12-25 17:02:40,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:02:40,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:02:40,551 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:02:40,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [397617025] [2023-12-25 17:02:40,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:02:40,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:02:40,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:02:40,552 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:02:40,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-12-25 17:02:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:02:44,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 16869 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:02:44,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:02:44,629 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 104 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:02:44,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:02:44,804 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-12-25 17:02:44,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:02:44,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32257125] [2023-12-25 17:02:44,804 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:02:44,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397617025] [2023-12-25 17:02:44,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397617025] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:02:44,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:02:44,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:02:44,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177982479] [2023-12-25 17:02:44,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:02:44,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:02:44,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:02:44,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:02:44,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:02:44,808 INFO L87 Difference]: Start difference. First operand 5382 states and 8936 transitions. Second operand has 5 states, 5 states have (on average 642.4) internal successors, (3212), 5 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states 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 17:02:49,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:02:49,347 INFO L93 Difference]: Finished difference Result 19496 states and 32229 transitions. [2023-12-25 17:02:49,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:02:49,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 642.4) internal successors, (3212), 5 states have internal predecessors, (3212), 0 states have call successors, (0), 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 3411 [2023-12-25 17:02:49,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:02:49,360 INFO L225 Difference]: With dead ends: 19496 [2023-12-25 17:02:49,360 INFO L226 Difference]: Without dead ends: 10024 [2023-12-25 17:02:49,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6821 GetRequests, 6812 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:02:49,368 INFO L413 NwaCegarLoop]: 13211 mSDtfsCounter, 14213 mSDsluCounter, 19625 mSDsCounter, 0 mSdLazyCounter, 7328 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14213 SdHoareTripleChecker+Valid, 32836 SdHoareTripleChecker+Invalid, 7702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 7328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-25 17:02:49,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14213 Valid, 32836 Invalid, 7702 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 7328 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-25 17:02:49,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10024 states. [2023-12-25 17:02:49,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10024 to 5387. [2023-12-25 17:02:49,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5387 states, 5386 states have (on average 1.6604158930560713) internal successors, (8943), 5386 states have internal predecessors, (8943), 0 states have call successors, (0), 0 states 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 17:02:49,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5387 states to 5387 states and 8943 transitions. [2023-12-25 17:02:49,433 INFO L78 Accepts]: Start accepts. Automaton has 5387 states and 8943 transitions. Word has length 3411 [2023-12-25 17:02:49,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:02:49,434 INFO L495 AbstractCegarLoop]: Abstraction has 5387 states and 8943 transitions. [2023-12-25 17:02:49,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 642.4) internal successors, (3212), 5 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states 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 17:02:49,435 INFO L276 IsEmpty]: Start isEmpty. Operand 5387 states and 8943 transitions. [2023-12-25 17:02:49,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3413 [2023-12-25 17:02:49,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:02:49,492 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:02:49,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-12-25 17:02:49,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:02:49,693 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:02:49,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:02:49,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1592808250, now seen corresponding path program 1 times [2023-12-25 17:02:49,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:02:49,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839594218] [2023-12-25 17:02:49,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:02:49,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:02:49,897 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:02:49,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951070102] [2023-12-25 17:02:49,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:02:49,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:02:49,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:02:49,898 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:02:49,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-12-25 17:02:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:02:53,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 16872 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 17:02:53,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:02:54,091 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 108 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:02:54,091 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:02:54,279 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-12-25 17:02:54,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:02:54,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839594218] [2023-12-25 17:02:54,280 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:02:54,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951070102] [2023-12-25 17:02:54,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951070102] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:02:54,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:02:54,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-25 17:02:54,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697178018] [2023-12-25 17:02:54,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:02:54,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:02:54,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:02:54,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:02:54,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:02:54,284 INFO L87 Difference]: Start difference. First operand 5387 states and 8943 transitions. Second operand has 6 states, 6 states have (on average 536.1666666666666) internal successors, (3217), 6 states have internal predecessors, (3217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:03:01,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:03:01,743 INFO L93 Difference]: Finished difference Result 24464 states and 40467 transitions. [2023-12-25 17:03:01,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 17:03:01,744 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 536.1666666666666) internal successors, (3217), 6 states have internal predecessors, (3217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3412 [2023-12-25 17:03:01,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:03:01,761 INFO L225 Difference]: With dead ends: 24464 [2023-12-25 17:03:01,761 INFO L226 Difference]: Without dead ends: 14972 [2023-12-25 17:03:01,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6825 GetRequests, 6812 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-12-25 17:03:01,771 INFO L413 NwaCegarLoop]: 13201 mSDtfsCounter, 28563 mSDsluCounter, 32193 mSDsCounter, 0 mSdLazyCounter, 11446 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28563 SdHoareTripleChecker+Valid, 45394 SdHoareTripleChecker+Invalid, 11823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 11446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:03:01,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28563 Valid, 45394 Invalid, 11823 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [377 Valid, 11446 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-12-25 17:03:01,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14972 states. [2023-12-25 17:03:01,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14972 to 5392. [2023-12-25 17:03:01,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5392 states, 5391 states have (on average 1.6601743646818772) internal successors, (8950), 5391 states have internal predecessors, (8950), 0 states have call successors, (0), 0 states 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 17:03:01,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5392 states to 5392 states and 8950 transitions. [2023-12-25 17:03:01,849 INFO L78 Accepts]: Start accepts. Automaton has 5392 states and 8950 transitions. Word has length 3412 [2023-12-25 17:03:01,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:03:01,851 INFO L495 AbstractCegarLoop]: Abstraction has 5392 states and 8950 transitions. [2023-12-25 17:03:01,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 536.1666666666666) internal successors, (3217), 6 states have internal predecessors, (3217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 17:03:01,852 INFO L276 IsEmpty]: Start isEmpty. Operand 5392 states and 8950 transitions. [2023-12-25 17:03:01,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3414 [2023-12-25 17:03:01,910 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:03:01,911 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:03:01,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2023-12-25 17:03:02,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-12-25 17:03:02,112 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:03:02,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:03:02,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1836253532, now seen corresponding path program 1 times [2023-12-25 17:03:02,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:03:02,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648047129] [2023-12-25 17:03:02,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:03:02,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:03:02,455 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:03:02,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [701925976] [2023-12-25 17:03:02,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:03:02,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:03:02,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:03:02,457 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:03:02,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-12-25 17:03:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:03:06,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 16875 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:03:06,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:03:06,526 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 112 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:03:06,526 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:03:06,723 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-12-25 17:03:06,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:03:06,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648047129] [2023-12-25 17:03:06,724 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:03:06,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701925976] [2023-12-25 17:03:06,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701925976] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:03:06,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:03:06,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:03:06,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897881857] [2023-12-25 17:03:06,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:03:06,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:03:06,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:03:06,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:03:06,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:03:06,728 INFO L87 Difference]: Start difference. First operand 5392 states and 8950 transitions. Second operand has 5 states, 5 states have (on average 644.4) internal successors, (3222), 5 states have internal predecessors, (3222), 0 states have call successors, (0), 0 states 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 17:03:11,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:03:11,246 INFO L93 Difference]: Finished difference Result 19544 states and 32297 transitions. [2023-12-25 17:03:11,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:03:11,247 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 644.4) internal successors, (3222), 5 states have internal predecessors, (3222), 0 states have call successors, (0), 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 3413 [2023-12-25 17:03:11,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:03:11,258 INFO L225 Difference]: With dead ends: 19544 [2023-12-25 17:03:11,258 INFO L226 Difference]: Without dead ends: 10032 [2023-12-25 17:03:11,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6825 GetRequests, 6816 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:03:11,265 INFO L413 NwaCegarLoop]: 13185 mSDtfsCounter, 14197 mSDsluCounter, 19601 mSDsCounter, 0 mSdLazyCounter, 7312 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14197 SdHoareTripleChecker+Valid, 32786 SdHoareTripleChecker+Invalid, 7686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 7312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-25 17:03:11,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14197 Valid, 32786 Invalid, 7686 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 7312 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-25 17:03:11,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10032 states. [2023-12-25 17:03:11,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10032 to 5397. [2023-12-25 17:03:11,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5397 states, 5396 states have (on average 1.6599332839140104) internal successors, (8957), 5396 states have internal predecessors, (8957), 0 states have call successors, (0), 0 states 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 17:03:11,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5397 states to 5397 states and 8957 transitions. [2023-12-25 17:03:11,328 INFO L78 Accepts]: Start accepts. Automaton has 5397 states and 8957 transitions. Word has length 3413 [2023-12-25 17:03:11,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:03:11,329 INFO L495 AbstractCegarLoop]: Abstraction has 5397 states and 8957 transitions. [2023-12-25 17:03:11,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 644.4) internal successors, (3222), 5 states have internal predecessors, (3222), 0 states have call successors, (0), 0 states 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 17:03:11,330 INFO L276 IsEmpty]: Start isEmpty. Operand 5397 states and 8957 transitions. [2023-12-25 17:03:11,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3415 [2023-12-25 17:03:11,388 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:03:11,389 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:03:11,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2023-12-25 17:03:11,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:03:11,592 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:03:11,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:03:11,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1157421230, now seen corresponding path program 1 times [2023-12-25 17:03:11,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:03:11,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545931271] [2023-12-25 17:03:11,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:03:11,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:03:11,801 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:03:11,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1733621979] [2023-12-25 17:03:11,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:03:11,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:03:11,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:03:11,803 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:03:11,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-12-25 17:03:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:03:15,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 16878 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:03:15,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:03:15,895 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 116 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:03:15,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:03:16,082 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2023-12-25 17:03:16,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:03:16,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545931271] [2023-12-25 17:03:16,082 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:03:16,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733621979] [2023-12-25 17:03:16,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733621979] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:03:16,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:03:16,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:03:16,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771158855] [2023-12-25 17:03:16,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:03:16,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:03:16,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:03:16,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:03:16,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:03:16,086 INFO L87 Difference]: Start difference. First operand 5397 states and 8957 transitions. Second operand has 5 states, 5 states have (on average 645.4) internal successors, (3227), 5 states have internal predecessors, (3227), 0 states have call successors, (0), 0 states 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 17:03:20,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:03:20,576 INFO L93 Difference]: Finished difference Result 19568 states and 32331 transitions. [2023-12-25 17:03:20,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:03:20,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 645.4) internal successors, (3227), 5 states have internal predecessors, (3227), 0 states have call successors, (0), 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 3414 [2023-12-25 17:03:20,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:03:20,588 INFO L225 Difference]: With dead ends: 19568 [2023-12-25 17:03:20,588 INFO L226 Difference]: Without dead ends: 10036 [2023-12-25 17:03:20,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6827 GetRequests, 6818 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:03:20,597 INFO L413 NwaCegarLoop]: 13172 mSDtfsCounter, 14189 mSDsluCounter, 19589 mSDsCounter, 0 mSdLazyCounter, 7304 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14189 SdHoareTripleChecker+Valid, 32761 SdHoareTripleChecker+Invalid, 7678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 7304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-25 17:03:20,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14189 Valid, 32761 Invalid, 7678 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 7304 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-25 17:03:20,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10036 states. [2023-12-25 17:03:20,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10036 to 5402. [2023-12-25 17:03:20,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 5401 states have (on average 1.65969264950935) internal successors, (8964), 5401 states have internal predecessors, (8964), 0 states have call successors, (0), 0 states 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 17:03:20,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 8964 transitions. [2023-12-25 17:03:20,658 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 8964 transitions. Word has length 3414 [2023-12-25 17:03:20,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:03:20,659 INFO L495 AbstractCegarLoop]: Abstraction has 5402 states and 8964 transitions. [2023-12-25 17:03:20,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 645.4) internal successors, (3227), 5 states have internal predecessors, (3227), 0 states have call successors, (0), 0 states 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 17:03:20,660 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 8964 transitions. [2023-12-25 17:03:20,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3416 [2023-12-25 17:03:20,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:03:20,718 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:03:20,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-12-25 17:03:20,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2023-12-25 17:03:20,919 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:03:20,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:03:20,920 INFO L85 PathProgramCache]: Analyzing trace with hash -449039080, now seen corresponding path program 1 times [2023-12-25 17:03:20,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:03:20,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546985019] [2023-12-25 17:03:20,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:03:20,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:03:21,144 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:03:21,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560302564] [2023-12-25 17:03:21,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:03:21,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:03:21,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:03:21,146 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:03:21,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-12-25 17:03:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:03:24,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 16881 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:03:24,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:03:25,052 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 120 proven. 188 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:03:25,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:03:25,255 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-25 17:03:25,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:03:25,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546985019] [2023-12-25 17:03:25,255 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:03:25,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560302564] [2023-12-25 17:03:25,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560302564] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:03:25,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:03:25,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:03:25,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144817969] [2023-12-25 17:03:25,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:03:25,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:03:25,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:03:25,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:03:25,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:03:25,260 INFO L87 Difference]: Start difference. First operand 5402 states and 8964 transitions. Second operand has 5 states, 5 states have (on average 646.4) internal successors, (3232), 5 states have internal predecessors, (3232), 0 states have call successors, (0), 0 states 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 17:03:29,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:03:29,804 INFO L93 Difference]: Finished difference Result 19592 states and 32365 transitions. [2023-12-25 17:03:29,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:03:29,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 646.4) internal successors, (3232), 5 states have internal predecessors, (3232), 0 states have call successors, (0), 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 3415 [2023-12-25 17:03:29,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:03:29,813 INFO L225 Difference]: With dead ends: 19592 [2023-12-25 17:03:29,813 INFO L226 Difference]: Without dead ends: 10040 [2023-12-25 17:03:29,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6829 GetRequests, 6820 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:03:29,816 INFO L413 NwaCegarLoop]: 13159 mSDtfsCounter, 14181 mSDsluCounter, 19577 mSDsCounter, 0 mSdLazyCounter, 7296 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14181 SdHoareTripleChecker+Valid, 32736 SdHoareTripleChecker+Invalid, 7670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 7296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-25 17:03:29,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14181 Valid, 32736 Invalid, 7670 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 7296 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-25 17:03:29,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10040 states. [2023-12-25 17:03:29,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10040 to 5407. [2023-12-25 17:03:29,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5407 states, 5406 states have (on average 1.6594524602293748) internal successors, (8971), 5406 states have internal predecessors, (8971), 0 states have call successors, (0), 0 states 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 17:03:29,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5407 states to 5407 states and 8971 transitions. [2023-12-25 17:03:29,867 INFO L78 Accepts]: Start accepts. Automaton has 5407 states and 8971 transitions. Word has length 3415 [2023-12-25 17:03:29,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:03:29,868 INFO L495 AbstractCegarLoop]: Abstraction has 5407 states and 8971 transitions. [2023-12-25 17:03:29,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 646.4) internal successors, (3232), 5 states have internal predecessors, (3232), 0 states have call successors, (0), 0 states 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 17:03:29,868 INFO L276 IsEmpty]: Start isEmpty. Operand 5407 states and 8971 transitions. [2023-12-25 17:03:29,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3417 [2023-12-25 17:03:29,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:03:29,927 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:03:29,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2023-12-25 17:03:30,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2023-12-25 17:03:30,128 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:03:30,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:03:30,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1857490910, now seen corresponding path program 1 times [2023-12-25 17:03:30,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:03:30,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530413189] [2023-12-25 17:03:30,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:03:30,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:03:30,338 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:03:30,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [191821618] [2023-12-25 17:03:30,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:03:30,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:03:30,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:03:30,340 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:03:30,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-12-25 17:03:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:03:33,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 16884 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:03:33,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:03:34,159 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 124 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:03:34,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:03:34,357 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-25 17:03:34,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:03:34,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530413189] [2023-12-25 17:03:34,357 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:03:34,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191821618] [2023-12-25 17:03:34,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191821618] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:03:34,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:03:34,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 17:03:34,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980157413] [2023-12-25 17:03:34,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:03:34,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:03:34,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:03:34,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:03:34,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 17:03:34,361 INFO L87 Difference]: Start difference. First operand 5407 states and 8971 transitions. Second operand has 5 states, 5 states have (on average 647.4) internal successors, (3237), 5 states have internal predecessors, (3237), 0 states have call successors, (0), 0 states 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 17:03:38,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:03:38,247 INFO L93 Difference]: Finished difference Result 19616 states and 32399 transitions. [2023-12-25 17:03:38,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:03:38,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 647.4) internal successors, (3237), 5 states have internal predecessors, (3237), 0 states have call successors, (0), 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 3416 [2023-12-25 17:03:38,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:03:38,258 INFO L225 Difference]: With dead ends: 19616 [2023-12-25 17:03:38,258 INFO L226 Difference]: Without dead ends: 10044 [2023-12-25 17:03:38,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6831 GetRequests, 6822 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:03:38,265 INFO L413 NwaCegarLoop]: 13146 mSDtfsCounter, 20680 mSDsluCounter, 12987 mSDsCounter, 0 mSdLazyCounter, 5392 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20680 SdHoareTripleChecker+Valid, 26133 SdHoareTripleChecker+Invalid, 5766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 5392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-25 17:03:38,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20680 Valid, 26133 Invalid, 5766 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 5392 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-25 17:03:38,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10044 states. [2023-12-25 17:03:38,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10044 to 5412. [2023-12-25 17:03:38,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5412 states, 5411 states have (on average 1.6592127148401405) internal successors, (8978), 5411 states have internal predecessors, (8978), 0 states have call successors, (0), 0 states 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 17:03:38,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5412 states to 5412 states and 8978 transitions. [2023-12-25 17:03:38,316 INFO L78 Accepts]: Start accepts. Automaton has 5412 states and 8978 transitions. Word has length 3416 [2023-12-25 17:03:38,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:03:38,317 INFO L495 AbstractCegarLoop]: Abstraction has 5412 states and 8978 transitions. [2023-12-25 17:03:38,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 647.4) internal successors, (3237), 5 states have internal predecessors, (3237), 0 states have call successors, (0), 0 states 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 17:03:38,318 INFO L276 IsEmpty]: Start isEmpty. Operand 5412 states and 8978 transitions. [2023-12-25 17:03:38,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3418 [2023-12-25 17:03:38,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:03:38,376 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:03:38,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2023-12-25 17:03:38,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:03:38,577 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:03:38,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:03:38,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1126653324, now seen corresponding path program 1 times [2023-12-25 17:03:38,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:03:38,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126089705] [2023-12-25 17:03:38,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:03:38,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:03:38,773 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:03:38,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [143704228] [2023-12-25 17:03:38,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:03:38,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:03:38,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:03:38,775 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:03:38,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-12-25 17:03:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:03:42,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 16887 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:03:42,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:03:42,705 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 128 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:03:42,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:03:42,908 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2023-12-25 17:03:42,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:03:42,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126089705] [2023-12-25 17:03:42,909 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:03:42,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143704228] [2023-12-25 17:03:42,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143704228] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:03:42,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:03:42,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-25 17:03:42,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332054658] [2023-12-25 17:03:42,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:03:42,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 17:03:42,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:03:42,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 17:03:42,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 17:03:42,912 INFO L87 Difference]: Start difference. First operand 5412 states and 8978 transitions. Second operand has 6 states, 6 states have (on average 540.0) internal successors, (3240), 6 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states 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 17:03:49,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:03:49,897 INFO L93 Difference]: Finished difference Result 24629 states and 40708 transitions. [2023-12-25 17:03:49,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 17:03:49,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 540.0) internal successors, (3240), 6 states have internal predecessors, (3240), 0 states have call successors, (0), 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 3417 [2023-12-25 17:03:49,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:03:49,913 INFO L225 Difference]: With dead ends: 24629 [2023-12-25 17:03:49,913 INFO L226 Difference]: Without dead ends: 15037 [2023-12-25 17:03:49,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6833 GetRequests, 6822 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-12-25 17:03:49,923 INFO L413 NwaCegarLoop]: 13140 mSDtfsCounter, 28498 mSDsluCounter, 32142 mSDsCounter, 0 mSdLazyCounter, 11389 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28498 SdHoareTripleChecker+Valid, 45282 SdHoareTripleChecker+Invalid, 11767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 11389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-12-25 17:03:49,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28498 Valid, 45282 Invalid, 11767 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [378 Valid, 11389 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-12-25 17:03:49,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15037 states. [2023-12-25 17:03:49,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15037 to 5414. [2023-12-25 17:03:49,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5413 states have (on average 1.6589691483465732) internal successors, (8980), 5413 states have internal predecessors, (8980), 0 states have call successors, (0), 0 states 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 17:03:50,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 8980 transitions. [2023-12-25 17:03:50,003 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 8980 transitions. Word has length 3417 [2023-12-25 17:03:50,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:03:50,005 INFO L495 AbstractCegarLoop]: Abstraction has 5414 states and 8980 transitions. [2023-12-25 17:03:50,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 540.0) internal successors, (3240), 6 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states 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 17:03:50,006 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 8980 transitions. [2023-12-25 17:03:50,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3419 [2023-12-25 17:03:50,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:03:50,068 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:03:50,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2023-12-25 17:03:50,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2023-12-25 17:03:50,268 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:03:50,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:03:50,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1328287102, now seen corresponding path program 1 times [2023-12-25 17:03:50,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:03:50,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12385580] [2023-12-25 17:03:50,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:03:50,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:03:50,477 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:03:50,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1528523761] [2023-12-25 17:03:50,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:03:50,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:03:50,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:03:50,479 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:03:50,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-12-25 17:03:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:03:54,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 16891 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:03:54,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:03:54,499 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 124 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:03:54,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:03:54,550 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-12-25 17:03:54,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:03:54,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12385580] [2023-12-25 17:03:54,550 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:03:54,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528523761] [2023-12-25 17:03:54,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528523761] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:03:54,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:03:54,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-25 17:03:54,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474196449] [2023-12-25 17:03:54,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:03:54,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:03:54,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:03:54,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:03:54,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:03:54,555 INFO L87 Difference]: Start difference. First operand 5414 states and 8980 transitions. Second operand has 5 states, 5 states have (on average 647.8) internal successors, (3239), 5 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states 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 17:03:54,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:03:54,785 INFO L93 Difference]: Finished difference Result 20040 states and 33231 transitions. [2023-12-25 17:03:54,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:03:54,786 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 647.8) internal successors, (3239), 5 states have internal predecessors, (3239), 0 states have call successors, (0), 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 3418 [2023-12-25 17:03:54,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:03:54,800 INFO L225 Difference]: With dead ends: 20040 [2023-12-25 17:03:54,800 INFO L226 Difference]: Without dead ends: 15037 [2023-12-25 17:03:54,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6834 GetRequests, 6825 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:03:54,807 INFO L413 NwaCegarLoop]: 16263 mSDtfsCounter, 15451 mSDsluCounter, 40527 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15451 SdHoareTripleChecker+Valid, 56790 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:03:54,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15451 Valid, 56790 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:03:54,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15037 states. [2023-12-25 17:03:54,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15037 to 5414. [2023-12-25 17:03:54,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5413 states have (on average 1.6589691483465732) internal successors, (8980), 5413 states have internal predecessors, (8980), 0 states have call successors, (0), 0 states 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 17:03:54,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 8980 transitions. [2023-12-25 17:03:54,877 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 8980 transitions. Word has length 3418 [2023-12-25 17:03:54,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:03:54,878 INFO L495 AbstractCegarLoop]: Abstraction has 5414 states and 8980 transitions. [2023-12-25 17:03:54,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 647.8) internal successors, (3239), 5 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states 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 17:03:54,879 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 8980 transitions. [2023-12-25 17:03:54,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3420 [2023-12-25 17:03:54,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:03:54,936 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:03:54,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2023-12-25 17:03:55,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2023-12-25 17:03:55,137 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:03:55,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:03:55,138 INFO L85 PathProgramCache]: Analyzing trace with hash -909928754, now seen corresponding path program 1 times [2023-12-25 17:03:55,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:03:55,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635701898] [2023-12-25 17:03:55,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:03:55,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:03:55,339 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:03:55,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [769365941] [2023-12-25 17:03:55,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:03:55,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:03:55,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:03:55,341 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:03:55,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-12-25 17:03:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:03:58,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 16894 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:03:58,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:03:59,251 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 120 proven. 188 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:03:59,252 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:03:59,316 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-12-25 17:03:59,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:03:59,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635701898] [2023-12-25 17:03:59,316 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:03:59,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769365941] [2023-12-25 17:03:59,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769365941] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:03:59,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:03:59,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-25 17:03:59,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132953588] [2023-12-25 17:03:59,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:03:59,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:03:59,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:03:59,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:03:59,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:03:59,320 INFO L87 Difference]: Start difference. First operand 5414 states and 8980 transitions. Second operand has 5 states, 5 states have (on average 647.6) internal successors, (3238), 5 states have internal predecessors, (3238), 0 states have call successors, (0), 0 states 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 17:03:59,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:03:59,560 INFO L93 Difference]: Finished difference Result 20034 states and 33221 transitions. [2023-12-25 17:03:59,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:03:59,561 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 647.6) internal successors, (3238), 5 states have internal predecessors, (3238), 0 states have call successors, (0), 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 3419 [2023-12-25 17:03:59,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:03:59,576 INFO L225 Difference]: With dead ends: 20034 [2023-12-25 17:03:59,577 INFO L226 Difference]: Without dead ends: 15037 [2023-12-25 17:03:59,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6836 GetRequests, 6827 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:03:59,584 INFO L413 NwaCegarLoop]: 16273 mSDtfsCounter, 15454 mSDsluCounter, 40547 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15454 SdHoareTripleChecker+Valid, 56820 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:03:59,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15454 Valid, 56820 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:03:59,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15037 states. [2023-12-25 17:03:59,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15037 to 5414. [2023-12-25 17:03:59,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5413 states have (on average 1.6589691483465732) internal successors, (8980), 5413 states have internal predecessors, (8980), 0 states have call successors, (0), 0 states 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 17:03:59,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 8980 transitions. [2023-12-25 17:03:59,665 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 8980 transitions. Word has length 3419 [2023-12-25 17:03:59,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:03:59,667 INFO L495 AbstractCegarLoop]: Abstraction has 5414 states and 8980 transitions. [2023-12-25 17:03:59,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 647.6) internal successors, (3238), 5 states have internal predecessors, (3238), 0 states have call successors, (0), 0 states 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 17:03:59,667 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 8980 transitions. [2023-12-25 17:03:59,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3421 [2023-12-25 17:03:59,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:03:59,726 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:03:59,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2023-12-25 17:03:59,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:03:59,926 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:03:59,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:03:59,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1541467904, now seen corresponding path program 1 times [2023-12-25 17:03:59,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:03:59,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727109920] [2023-12-25 17:03:59,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:03:59,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:04:00,249 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:04:00,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1172992337] [2023-12-25 17:04:00,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:04:00,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:04:00,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:04:00,251 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:04:00,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-12-25 17:04:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:04:03,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 16898 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 17:04:03,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:04:04,094 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 116 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:04:04,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:04:04,145 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-25 17:04:04,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:04:04,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727109920] [2023-12-25 17:04:04,145 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:04:04,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172992337] [2023-12-25 17:04:04,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172992337] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:04:04,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:04:04,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-25 17:04:04,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644637470] [2023-12-25 17:04:04,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:04:04,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:04:04,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:04:04,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:04:04,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:04:04,149 INFO L87 Difference]: Start difference. First operand 5414 states and 8980 transitions. Second operand has 5 states, 5 states have (on average 647.4) internal successors, (3237), 5 states have internal predecessors, (3237), 0 states have call successors, (0), 0 states 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 17:04:04,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:04:04,383 INFO L93 Difference]: Finished difference Result 20028 states and 33211 transitions. [2023-12-25 17:04:04,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:04:04,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 647.4) internal successors, (3237), 5 states have internal predecessors, (3237), 0 states have call successors, (0), 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 3420 [2023-12-25 17:04:04,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:04:04,398 INFO L225 Difference]: With dead ends: 20028 [2023-12-25 17:04:04,398 INFO L226 Difference]: Without dead ends: 15037 [2023-12-25 17:04:04,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6838 GetRequests, 6829 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:04:04,405 INFO L413 NwaCegarLoop]: 16283 mSDtfsCounter, 15457 mSDsluCounter, 40567 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15457 SdHoareTripleChecker+Valid, 56850 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:04:04,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15457 Valid, 56850 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:04:04,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15037 states. [2023-12-25 17:04:04,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15037 to 5414. [2023-12-25 17:04:04,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5413 states have (on average 1.6589691483465732) internal successors, (8980), 5413 states have internal predecessors, (8980), 0 states have call successors, (0), 0 states 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 17:04:04,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 8980 transitions. [2023-12-25 17:04:04,481 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 8980 transitions. Word has length 3420 [2023-12-25 17:04:04,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:04:04,482 INFO L495 AbstractCegarLoop]: Abstraction has 5414 states and 8980 transitions. [2023-12-25 17:04:04,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 647.4) internal successors, (3237), 5 states have internal predecessors, (3237), 0 states have call successors, (0), 0 states 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 17:04:04,483 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 8980 transitions. [2023-12-25 17:04:04,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3422 [2023-12-25 17:04:04,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:04:04,542 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:04:04,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2023-12-25 17:04:04,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:04:04,760 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:04:04,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:04:04,761 INFO L85 PathProgramCache]: Analyzing trace with hash 679285264, now seen corresponding path program 1 times [2023-12-25 17:04:04,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:04:04,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308545189] [2023-12-25 17:04:04,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:04:04,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:04:04,958 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:04:04,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1930942642] [2023-12-25 17:04:04,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:04:04,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:04:04,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:04:04,960 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:04:04,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-12-25 17:04:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:04:08,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 16901 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:04:08,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:04:08,812 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 112 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:04:08,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:04:08,873 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2023-12-25 17:04:08,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:04:08,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308545189] [2023-12-25 17:04:08,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:04:08,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930942642] [2023-12-25 17:04:08,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930942642] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:04:08,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:04:08,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-25 17:04:08,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863540711] [2023-12-25 17:04:08,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:04:08,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:04:08,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:04:08,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:04:08,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:04:08,878 INFO L87 Difference]: Start difference. First operand 5414 states and 8980 transitions. Second operand has 5 states, 5 states have (on average 647.2) internal successors, (3236), 5 states have internal predecessors, (3236), 0 states have call successors, (0), 0 states 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 17:04:09,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:04:09,230 INFO L93 Difference]: Finished difference Result 20022 states and 33201 transitions. [2023-12-25 17:04:09,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:04:09,231 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 647.2) internal successors, (3236), 5 states have internal predecessors, (3236), 0 states have call successors, (0), 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 3421 [2023-12-25 17:04:09,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:04:09,241 INFO L225 Difference]: With dead ends: 20022 [2023-12-25 17:04:09,241 INFO L226 Difference]: Without dead ends: 15037 [2023-12-25 17:04:09,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6840 GetRequests, 6831 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:04:09,243 INFO L413 NwaCegarLoop]: 16293 mSDtfsCounter, 15460 mSDsluCounter, 40587 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15460 SdHoareTripleChecker+Valid, 56880 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:04:09,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15460 Valid, 56880 Invalid, 35 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:04:09,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15037 states. [2023-12-25 17:04:09,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15037 to 5414. [2023-12-25 17:04:09,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5413 states have (on average 1.6589691483465732) internal successors, (8980), 5413 states have internal predecessors, (8980), 0 states have call successors, (0), 0 states 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 17:04:09,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 8980 transitions. [2023-12-25 17:04:09,298 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 8980 transitions. Word has length 3421 [2023-12-25 17:04:09,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:04:09,299 INFO L495 AbstractCegarLoop]: Abstraction has 5414 states and 8980 transitions. [2023-12-25 17:04:09,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 647.2) internal successors, (3236), 5 states have internal predecessors, (3236), 0 states have call successors, (0), 0 states 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 17:04:09,300 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 8980 transitions. [2023-12-25 17:04:09,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3423 [2023-12-25 17:04:09,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:04:09,357 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:04:09,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2023-12-25 17:04:09,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:04:09,558 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:04:09,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:04:09,558 INFO L85 PathProgramCache]: Analyzing trace with hash 899926398, now seen corresponding path program 1 times [2023-12-25 17:04:09,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:04:09,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968695426] [2023-12-25 17:04:09,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:04:09,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:04:09,750 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:04:09,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [94340698] [2023-12-25 17:04:09,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:04:09,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:04:09,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:04:09,752 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:04:09,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-12-25 17:04:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:04:13,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 16905 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 17:04:13,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:04:13,564 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 108 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:04:13,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:04:13,603 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-12-25 17:04:13,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:04:13,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968695426] [2023-12-25 17:04:13,604 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:04:13,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94340698] [2023-12-25 17:04:13,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94340698] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:04:13,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:04:13,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-25 17:04:13,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140606996] [2023-12-25 17:04:13,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:04:13,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:04:13,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:04:13,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:04:13,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:04:13,608 INFO L87 Difference]: Start difference. First operand 5414 states and 8980 transitions. Second operand has 4 states, 4 states have (on average 808.75) internal successors, (3235), 4 states have internal predecessors, (3235), 0 states have call successors, (0), 0 states 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 17:04:13,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:04:13,734 INFO L93 Difference]: Finished difference Result 15052 states and 24959 transitions. [2023-12-25 17:04:13,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:04:13,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 808.75) internal successors, (3235), 4 states have internal predecessors, (3235), 0 states have call successors, (0), 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 3422 [2023-12-25 17:04:13,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:04:13,746 INFO L225 Difference]: With dead ends: 15052 [2023-12-25 17:04:13,747 INFO L226 Difference]: Without dead ends: 10073 [2023-12-25 17:04:13,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6842 GetRequests, 6835 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:04:13,752 INFO L413 NwaCegarLoop]: 8513 mSDtfsCounter, 7674 mSDsluCounter, 16524 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7674 SdHoareTripleChecker+Valid, 25037 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:04:13,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7674 Valid, 25037 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:04:13,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10073 states. [2023-12-25 17:04:13,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10073 to 5414. [2023-12-25 17:04:13,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5413 states have (on average 1.6589691483465732) internal successors, (8980), 5413 states have internal predecessors, (8980), 0 states have call successors, (0), 0 states 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 17:04:13,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 8980 transitions. [2023-12-25 17:04:13,819 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 8980 transitions. Word has length 3422 [2023-12-25 17:04:13,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:04:13,821 INFO L495 AbstractCegarLoop]: Abstraction has 5414 states and 8980 transitions. [2023-12-25 17:04:13,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 808.75) internal successors, (3235), 4 states have internal predecessors, (3235), 0 states have call successors, (0), 0 states 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 17:04:13,821 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 8980 transitions. [2023-12-25 17:04:13,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3424 [2023-12-25 17:04:13,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:04:13,881 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:04:13,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2023-12-25 17:04:14,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-12-25 17:04:14,082 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:04:14,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:04:14,082 INFO L85 PathProgramCache]: Analyzing trace with hash -12685486, now seen corresponding path program 1 times [2023-12-25 17:04:14,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:04:14,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049253474] [2023-12-25 17:04:14,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:04:14,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:04:14,283 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:04:14,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1555549753] [2023-12-25 17:04:14,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:04:14,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:04:14,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:04:14,285 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:04:14,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2023-12-25 17:04:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:04:17,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 16908 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 17:04:17,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:04:18,290 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 104 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:04:18,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:04:18,338 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2023-12-25 17:04:18,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:04:18,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049253474] [2023-12-25 17:04:18,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:04:18,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555549753] [2023-12-25 17:04:18,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555549753] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:04:18,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:04:18,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-25 17:04:18,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267362385] [2023-12-25 17:04:18,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:04:18,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:04:18,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:04:18,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:04:18,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:04:18,342 INFO L87 Difference]: Start difference. First operand 5414 states and 8980 transitions. Second operand has 5 states, 5 states have (on average 646.8) internal successors, (3234), 5 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states 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 17:04:18,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:04:18,571 INFO L93 Difference]: Finished difference Result 20010 states and 33181 transitions. [2023-12-25 17:04:18,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:04:18,572 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 646.8) internal successors, (3234), 5 states have internal predecessors, (3234), 0 states have call successors, (0), 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 3423 [2023-12-25 17:04:18,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:04:18,588 INFO L225 Difference]: With dead ends: 20010 [2023-12-25 17:04:18,588 INFO L226 Difference]: Without dead ends: 15037 [2023-12-25 17:04:18,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6844 GetRequests, 6835 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:04:18,595 INFO L413 NwaCegarLoop]: 16313 mSDtfsCounter, 15466 mSDsluCounter, 40627 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15466 SdHoareTripleChecker+Valid, 56940 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:04:18,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15466 Valid, 56940 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:04:18,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15037 states. [2023-12-25 17:04:18,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15037 to 5414. [2023-12-25 17:04:18,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5413 states have (on average 1.6589691483465732) internal successors, (8980), 5413 states have internal predecessors, (8980), 0 states have call successors, (0), 0 states 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 17:04:18,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 8980 transitions. [2023-12-25 17:04:18,665 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 8980 transitions. Word has length 3423 [2023-12-25 17:04:18,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:04:18,666 INFO L495 AbstractCegarLoop]: Abstraction has 5414 states and 8980 transitions. [2023-12-25 17:04:18,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 646.8) internal successors, (3234), 5 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states 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 17:04:18,667 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 8980 transitions. [2023-12-25 17:04:18,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3425 [2023-12-25 17:04:18,724 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:04:18,725 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:04:18,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2023-12-25 17:04:18,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2023-12-25 17:04:18,926 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:04:18,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:04:18,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1449270788, now seen corresponding path program 1 times [2023-12-25 17:04:18,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:04:18,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672280597] [2023-12-25 17:04:18,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:04:18,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:04:19,125 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:04:19,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1220988622] [2023-12-25 17:04:19,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:04:19,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:04:19,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:04:19,127 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:04:19,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2023-12-25 17:04:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:04:22,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 16912 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:04:22,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:04:22,975 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 100 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:04:22,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:04:23,041 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2023-12-25 17:04:23,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:04:23,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672280597] [2023-12-25 17:04:23,042 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:04:23,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220988622] [2023-12-25 17:04:23,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220988622] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:04:23,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:04:23,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-25 17:04:23,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954344612] [2023-12-25 17:04:23,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:04:23,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:04:23,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:04:23,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:04:23,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:04:23,047 INFO L87 Difference]: Start difference. First operand 5414 states and 8980 transitions. Second operand has 5 states, 5 states have (on average 646.6) internal successors, (3233), 5 states have internal predecessors, (3233), 0 states have call successors, (0), 0 states 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 17:04:23,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:04:23,279 INFO L93 Difference]: Finished difference Result 20004 states and 33171 transitions. [2023-12-25 17:04:23,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:04:23,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 646.6) internal successors, (3233), 5 states have internal predecessors, (3233), 0 states have call successors, (0), 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 3424 [2023-12-25 17:04:23,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:04:23,296 INFO L225 Difference]: With dead ends: 20004 [2023-12-25 17:04:23,296 INFO L226 Difference]: Without dead ends: 15037 [2023-12-25 17:04:23,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6846 GetRequests, 6837 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:04:23,304 INFO L413 NwaCegarLoop]: 16323 mSDtfsCounter, 15469 mSDsluCounter, 40647 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15469 SdHoareTripleChecker+Valid, 56970 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:04:23,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15469 Valid, 56970 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:04:23,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15037 states. [2023-12-25 17:04:23,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15037 to 5414. [2023-12-25 17:04:23,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5413 states have (on average 1.6589691483465732) internal successors, (8980), 5413 states have internal predecessors, (8980), 0 states have call successors, (0), 0 states 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 17:04:23,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 8980 transitions. [2023-12-25 17:04:23,376 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 8980 transitions. Word has length 3424 [2023-12-25 17:04:23,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:04:23,377 INFO L495 AbstractCegarLoop]: Abstraction has 5414 states and 8980 transitions. [2023-12-25 17:04:23,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 646.6) internal successors, (3233), 5 states have internal predecessors, (3233), 0 states have call successors, (0), 0 states 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 17:04:23,378 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 8980 transitions. [2023-12-25 17:04:23,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3426 [2023-12-25 17:04:23,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:04:23,437 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:04:23,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2023-12-25 17:04:23,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2023-12-25 17:04:23,638 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:04:23,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:04:23,638 INFO L85 PathProgramCache]: Analyzing trace with hash 221400724, now seen corresponding path program 1 times [2023-12-25 17:04:23,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:04:23,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649613472] [2023-12-25 17:04:23,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:04:23,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:04:23,838 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:04:23,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1313599558] [2023-12-25 17:04:23,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:04:23,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:04:23,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:04:23,840 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:04:23,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2023-12-25 17:04:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:04:27,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 16915 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 17:04:27,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:04:27,874 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 96 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:04:27,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:04:27,923 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-25 17:04:27,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:04:27,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649613472] [2023-12-25 17:04:27,923 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:04:27,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313599558] [2023-12-25 17:04:27,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313599558] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:04:27,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:04:27,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-25 17:04:27,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890859850] [2023-12-25 17:04:27,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:04:27,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:04:27,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:04:27,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:04:27,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:04:27,927 INFO L87 Difference]: Start difference. First operand 5414 states and 8980 transitions. Second operand has 5 states, 5 states have (on average 646.4) internal successors, (3232), 5 states have internal predecessors, (3232), 0 states have call successors, (0), 0 states 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 17:04:28,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:04:28,172 INFO L93 Difference]: Finished difference Result 19998 states and 33161 transitions. [2023-12-25 17:04:28,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:04:28,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 646.4) internal successors, (3232), 5 states have internal predecessors, (3232), 0 states have call successors, (0), 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 3425 [2023-12-25 17:04:28,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:04:28,188 INFO L225 Difference]: With dead ends: 19998 [2023-12-25 17:04:28,188 INFO L226 Difference]: Without dead ends: 15037 [2023-12-25 17:04:28,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6848 GetRequests, 6839 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:04:28,195 INFO L413 NwaCegarLoop]: 16333 mSDtfsCounter, 15472 mSDsluCounter, 40667 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15472 SdHoareTripleChecker+Valid, 57000 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:04:28,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15472 Valid, 57000 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:04:28,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15037 states. [2023-12-25 17:04:28,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15037 to 5414. [2023-12-25 17:04:28,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5413 states have (on average 1.6589691483465732) internal successors, (8980), 5413 states have internal predecessors, (8980), 0 states have call successors, (0), 0 states 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 17:04:28,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 8980 transitions. [2023-12-25 17:04:28,269 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 8980 transitions. Word has length 3425 [2023-12-25 17:04:28,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:04:28,271 INFO L495 AbstractCegarLoop]: Abstraction has 5414 states and 8980 transitions. [2023-12-25 17:04:28,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 646.4) internal successors, (3232), 5 states have internal predecessors, (3232), 0 states have call successors, (0), 0 states 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 17:04:28,272 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 8980 transitions. [2023-12-25 17:04:28,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3427 [2023-12-25 17:04:28,330 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:04:28,330 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:04:28,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2023-12-25 17:04:28,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:04:28,536 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:04:28,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:04:28,537 INFO L85 PathProgramCache]: Analyzing trace with hash 705730682, now seen corresponding path program 1 times [2023-12-25 17:04:28,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:04:28,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451360757] [2023-12-25 17:04:28,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:04:28,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:04:28,730 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:04:28,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [711980168] [2023-12-25 17:04:28,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:04:28,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:04:28,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:04:28,732 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:04:28,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2023-12-25 17:04:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:04:32,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 16919 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:04:32,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:04:32,591 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 92 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:04:32,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:04:32,639 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2023-12-25 17:04:32,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:04:32,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451360757] [2023-12-25 17:04:32,639 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:04:32,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711980168] [2023-12-25 17:04:32,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711980168] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:04:32,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:04:32,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-25 17:04:32,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968978644] [2023-12-25 17:04:32,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:04:32,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:04:32,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:04:32,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:04:32,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:04:32,643 INFO L87 Difference]: Start difference. First operand 5414 states and 8980 transitions. Second operand has 5 states, 5 states have (on average 646.2) internal successors, (3231), 5 states have internal predecessors, (3231), 0 states have call successors, (0), 0 states 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 17:04:32,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:04:32,875 INFO L93 Difference]: Finished difference Result 19995 states and 33156 transitions. [2023-12-25 17:04:32,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:04:32,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 646.2) internal successors, (3231), 5 states have internal predecessors, (3231), 0 states have call successors, (0), 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 3426 [2023-12-25 17:04:32,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:04:32,892 INFO L225 Difference]: With dead ends: 19995 [2023-12-25 17:04:32,892 INFO L226 Difference]: Without dead ends: 15040 [2023-12-25 17:04:32,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6850 GetRequests, 6841 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:04:32,898 INFO L413 NwaCegarLoop]: 16343 mSDtfsCounter, 15475 mSDsluCounter, 40687 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15475 SdHoareTripleChecker+Valid, 57030 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:04:32,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15475 Valid, 57030 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:04:32,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15040 states. [2023-12-25 17:04:32,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15040 to 5414. [2023-12-25 17:04:32,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5413 states have (on average 1.6589691483465732) internal successors, (8980), 5413 states have internal predecessors, (8980), 0 states have call successors, (0), 0 states 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 17:04:32,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 8980 transitions. [2023-12-25 17:04:32,975 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 8980 transitions. Word has length 3426 [2023-12-25 17:04:32,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:04:32,976 INFO L495 AbstractCegarLoop]: Abstraction has 5414 states and 8980 transitions. [2023-12-25 17:04:32,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 646.2) internal successors, (3231), 5 states have internal predecessors, (3231), 0 states have call successors, (0), 0 states 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 17:04:32,977 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 8980 transitions. [2023-12-25 17:04:33,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3428 [2023-12-25 17:04:33,155 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:04:33,155 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:04:33,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2023-12-25 17:04:33,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:04:33,356 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:04:33,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:04:33,357 INFO L85 PathProgramCache]: Analyzing trace with hash 46354390, now seen corresponding path program 1 times [2023-12-25 17:04:33,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:04:33,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169014836] [2023-12-25 17:04:33,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:04:33,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:04:33,547 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:04:33,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [572326937] [2023-12-25 17:04:33,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:04:33,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:04:33,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:04:33,549 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:04:33,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2023-12-25 17:04:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:04:37,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 16922 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:04:37,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:04:37,415 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 86 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:04:37,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:04:37,463 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-25 17:04:37,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:04:37,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169014836] [2023-12-25 17:04:37,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:04:37,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572326937] [2023-12-25 17:04:37,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572326937] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:04:37,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:04:37,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-25 17:04:37,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766917830] [2023-12-25 17:04:37,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:04:37,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:04:37,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:04:37,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:04:37,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:04:37,471 INFO L87 Difference]: Start difference. First operand 5414 states and 8980 transitions. Second operand has 5 states, 5 states have (on average 645.8) internal successors, (3229), 5 states have internal predecessors, (3229), 0 states have call successors, (0), 0 states 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 17:04:37,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:04:37,705 INFO L93 Difference]: Finished difference Result 19983 states and 33136 transitions. [2023-12-25 17:04:37,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:04:37,706 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 645.8) internal successors, (3229), 5 states have internal predecessors, (3229), 0 states have call successors, (0), 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 3427 [2023-12-25 17:04:37,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:04:37,719 INFO L225 Difference]: With dead ends: 19983 [2023-12-25 17:04:37,720 INFO L226 Difference]: Without dead ends: 15037 [2023-12-25 17:04:37,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6852 GetRequests, 6843 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:04:37,726 INFO L413 NwaCegarLoop]: 16358 mSDtfsCounter, 15481 mSDsluCounter, 40717 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15481 SdHoareTripleChecker+Valid, 57075 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:04:37,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15481 Valid, 57075 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:04:37,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15037 states. [2023-12-25 17:04:37,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15037 to 5414. [2023-12-25 17:04:37,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5413 states have (on average 1.6589691483465732) internal successors, (8980), 5413 states have internal predecessors, (8980), 0 states have call successors, (0), 0 states 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 17:04:37,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 8980 transitions. [2023-12-25 17:04:37,794 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 8980 transitions. Word has length 3427 [2023-12-25 17:04:37,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:04:37,795 INFO L495 AbstractCegarLoop]: Abstraction has 5414 states and 8980 transitions. [2023-12-25 17:04:37,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 645.8) internal successors, (3229), 5 states have internal predecessors, (3229), 0 states have call successors, (0), 0 states 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 17:04:37,796 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 8980 transitions. [2023-12-25 17:04:37,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3429 [2023-12-25 17:04:37,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:04:37,854 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:04:37,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2023-12-25 17:04:38,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2023-12-25 17:04:38,055 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:04:38,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:04:38,056 INFO L85 PathProgramCache]: Analyzing trace with hash 453412700, now seen corresponding path program 1 times [2023-12-25 17:04:38,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:04:38,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054108941] [2023-12-25 17:04:38,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:04:38,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:04:38,253 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:04:38,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1235299678] [2023-12-25 17:04:38,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:04:38,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:04:38,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:04:38,255 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:04:38,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2023-12-25 17:04:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:04:41,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 16925 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 17:04:41,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:04:42,274 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 82 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:04:42,274 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:04:42,324 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-12-25 17:04:42,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:04:42,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054108941] [2023-12-25 17:04:42,325 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:04:42,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235299678] [2023-12-25 17:04:42,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235299678] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:04:42,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:04:42,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-25 17:04:42,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901146510] [2023-12-25 17:04:42,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:04:42,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:04:42,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:04:42,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:04:42,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:04:42,329 INFO L87 Difference]: Start difference. First operand 5414 states and 8980 transitions. Second operand has 4 states, 4 states have (on average 807.0) internal successors, (3228), 4 states have internal predecessors, (3228), 0 states have call successors, (0), 0 states 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 17:04:42,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:04:42,460 INFO L93 Difference]: Finished difference Result 15052 states and 24959 transitions. [2023-12-25 17:04:42,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:04:42,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 807.0) internal successors, (3228), 4 states have internal predecessors, (3228), 0 states have call successors, (0), 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 3428 [2023-12-25 17:04:42,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:04:42,472 INFO L225 Difference]: With dead ends: 15052 [2023-12-25 17:04:42,472 INFO L226 Difference]: Without dead ends: 10112 [2023-12-25 17:04:42,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6854 GetRequests, 6847 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:04:42,478 INFO L413 NwaCegarLoop]: 8578 mSDtfsCounter, 7695 mSDsluCounter, 16589 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7695 SdHoareTripleChecker+Valid, 25167 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:04:42,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7695 Valid, 25167 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:04:42,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10112 states. [2023-12-25 17:04:42,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10112 to 5414. [2023-12-25 17:04:42,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5413 states have (on average 1.6589691483465732) internal successors, (8980), 5413 states have internal predecessors, (8980), 0 states have call successors, (0), 0 states 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 17:04:42,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 8980 transitions. [2023-12-25 17:04:42,531 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 8980 transitions. Word has length 3428 [2023-12-25 17:04:42,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:04:42,532 INFO L495 AbstractCegarLoop]: Abstraction has 5414 states and 8980 transitions. [2023-12-25 17:04:42,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 807.0) internal successors, (3228), 4 states have internal predecessors, (3228), 0 states have call successors, (0), 0 states 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 17:04:42,532 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 8980 transitions. [2023-12-25 17:04:42,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3430 [2023-12-25 17:04:42,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:04:42,590 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:04:42,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2023-12-25 17:04:42,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2023-12-25 17:04:42,791 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:04:42,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:04:42,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1605491286, now seen corresponding path program 1 times [2023-12-25 17:04:42,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:04:42,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751173644] [2023-12-25 17:04:42,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:04:42,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:04:42,998 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:04:42,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1514228339] [2023-12-25 17:04:42,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:04:42,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:04:42,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:04:43,000 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:04:43,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2023-12-25 17:04:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:04:46,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 16928 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 17:04:46,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:04:46,851 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 78 proven. 230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:04:46,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:04:46,902 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-12-25 17:04:46,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:04:46,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751173644] [2023-12-25 17:04:46,902 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:04:46,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514228339] [2023-12-25 17:04:46,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514228339] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:04:46,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:04:46,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-25 17:04:46,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941291910] [2023-12-25 17:04:46,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:04:46,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:04:46,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:04:46,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:04:46,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:04:46,906 INFO L87 Difference]: Start difference. First operand 5414 states and 8980 transitions. Second operand has 5 states, 5 states have (on average 645.4) internal successors, (3227), 5 states have internal predecessors, (3227), 0 states have call successors, (0), 0 states 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 17:04:47,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:04:47,137 INFO L93 Difference]: Finished difference Result 19971 states and 33116 transitions. [2023-12-25 17:04:47,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:04:47,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 645.4) internal successors, (3227), 5 states have internal predecessors, (3227), 0 states have call successors, (0), 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 3429 [2023-12-25 17:04:47,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:04:47,153 INFO L225 Difference]: With dead ends: 19971 [2023-12-25 17:04:47,153 INFO L226 Difference]: Without dead ends: 15037 [2023-12-25 17:04:47,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6856 GetRequests, 6847 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:04:47,159 INFO L413 NwaCegarLoop]: 16378 mSDtfsCounter, 15487 mSDsluCounter, 40757 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15487 SdHoareTripleChecker+Valid, 57135 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:04:47,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15487 Valid, 57135 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:04:47,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15037 states. [2023-12-25 17:04:47,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15037 to 5414. [2023-12-25 17:04:47,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5413 states have (on average 1.6589691483465732) internal successors, (8980), 5413 states have internal predecessors, (8980), 0 states have call successors, (0), 0 states 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 17:04:47,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 8980 transitions. [2023-12-25 17:04:47,230 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 8980 transitions. Word has length 3429 [2023-12-25 17:04:47,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:04:47,231 INFO L495 AbstractCegarLoop]: Abstraction has 5414 states and 8980 transitions. [2023-12-25 17:04:47,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 645.4) internal successors, (3227), 5 states have internal predecessors, (3227), 0 states have call successors, (0), 0 states 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 17:04:47,232 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 8980 transitions. [2023-12-25 17:04:47,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3431 [2023-12-25 17:04:47,289 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:04:47,290 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:04:47,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2023-12-25 17:04:47,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:04:47,491 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:04:47,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:04:47,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1917628904, now seen corresponding path program 1 times [2023-12-25 17:04:47,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:04:47,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296057399] [2023-12-25 17:04:47,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:04:47,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:04:47,683 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:04:47,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1760067709] [2023-12-25 17:04:47,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:04:47,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:04:47,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:04:47,684 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:04:47,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2023-12-25 17:04:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:04:51,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 16931 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 17:04:51,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:04:51,674 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 74 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:04:51,674 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:04:51,712 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-25 17:04:51,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:04:51,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296057399] [2023-12-25 17:04:51,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:04:51,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760067709] [2023-12-25 17:04:51,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760067709] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:04:51,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:04:51,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-25 17:04:51,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910631338] [2023-12-25 17:04:51,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:04:51,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:04:51,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:04:51,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:04:51,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:04:51,717 INFO L87 Difference]: Start difference. First operand 5414 states and 8980 transitions. Second operand has 4 states, 4 states have (on average 806.5) internal successors, (3226), 4 states have internal predecessors, (3226), 0 states have call successors, (0), 0 states 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 17:04:51,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:04:51,847 INFO L93 Difference]: Finished difference Result 15052 states and 24959 transitions. [2023-12-25 17:04:51,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:04:51,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 806.5) internal successors, (3226), 4 states have internal predecessors, (3226), 0 states have call successors, (0), 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 3430 [2023-12-25 17:04:51,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:04:51,858 INFO L225 Difference]: With dead ends: 15052 [2023-12-25 17:04:51,858 INFO L226 Difference]: Without dead ends: 10124 [2023-12-25 17:04:51,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6858 GetRequests, 6851 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:04:51,863 INFO L413 NwaCegarLoop]: 8598 mSDtfsCounter, 7701 mSDsluCounter, 16609 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7701 SdHoareTripleChecker+Valid, 25207 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:04:51,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7701 Valid, 25207 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:04:51,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10124 states. [2023-12-25 17:04:51,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10124 to 5414. [2023-12-25 17:04:51,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5413 states have (on average 1.6589691483465732) internal successors, (8980), 5413 states have internal predecessors, (8980), 0 states have call successors, (0), 0 states 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 17:04:51,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 8980 transitions. [2023-12-25 17:04:51,919 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 8980 transitions. Word has length 3430 [2023-12-25 17:04:51,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:04:51,920 INFO L495 AbstractCegarLoop]: Abstraction has 5414 states and 8980 transitions. [2023-12-25 17:04:51,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 806.5) internal successors, (3226), 4 states have internal predecessors, (3226), 0 states have call successors, (0), 0 states 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 17:04:51,920 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 8980 transitions. [2023-12-25 17:04:51,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3432 [2023-12-25 17:04:51,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:04:51,978 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:04:52,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2023-12-25 17:04:52,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2023-12-25 17:04:52,179 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:04:52,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:04:52,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1787370582, now seen corresponding path program 1 times [2023-12-25 17:04:52,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:04:52,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800684860] [2023-12-25 17:04:52,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:04:52,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:04:52,370 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:04:52,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2064721339] [2023-12-25 17:04:52,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:04:52,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:04:52,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:04:52,372 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:04:52,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2023-12-25 17:04:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:04:55,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 16934 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:04:55,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:04:56,296 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 70 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:04:56,297 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:04:56,352 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-12-25 17:04:56,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:04:56,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800684860] [2023-12-25 17:04:56,353 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:04:56,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064721339] [2023-12-25 17:04:56,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064721339] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:04:56,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:04:56,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-25 17:04:56,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789651251] [2023-12-25 17:04:56,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:04:56,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:04:56,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:04:56,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:04:56,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:04:56,357 INFO L87 Difference]: Start difference. First operand 5414 states and 8980 transitions. Second operand has 5 states, 5 states have (on average 645.0) internal successors, (3225), 5 states have internal predecessors, (3225), 0 states have call successors, (0), 0 states 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 17:04:56,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:04:56,591 INFO L93 Difference]: Finished difference Result 19959 states and 33096 transitions. [2023-12-25 17:04:56,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:04:56,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 645.0) internal successors, (3225), 5 states have internal predecessors, (3225), 0 states have call successors, (0), 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 3431 [2023-12-25 17:04:56,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:04:56,605 INFO L225 Difference]: With dead ends: 19959 [2023-12-25 17:04:56,605 INFO L226 Difference]: Without dead ends: 15037 [2023-12-25 17:04:56,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6860 GetRequests, 6851 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:04:56,611 INFO L413 NwaCegarLoop]: 16398 mSDtfsCounter, 15493 mSDsluCounter, 40797 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15493 SdHoareTripleChecker+Valid, 57195 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:04:56,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15493 Valid, 57195 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:04:56,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15037 states. [2023-12-25 17:04:56,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15037 to 5414. [2023-12-25 17:04:56,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5413 states have (on average 1.6589691483465732) internal successors, (8980), 5413 states have internal predecessors, (8980), 0 states have call successors, (0), 0 states 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 17:04:56,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 8980 transitions. [2023-12-25 17:04:56,679 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 8980 transitions. Word has length 3431 [2023-12-25 17:04:56,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:04:56,680 INFO L495 AbstractCegarLoop]: Abstraction has 5414 states and 8980 transitions. [2023-12-25 17:04:56,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 645.0) internal successors, (3225), 5 states have internal predecessors, (3225), 0 states have call successors, (0), 0 states 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 17:04:56,681 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 8980 transitions. [2023-12-25 17:04:56,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3433 [2023-12-25 17:04:56,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:04:56,740 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:04:56,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2023-12-25 17:04:56,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2023-12-25 17:04:56,945 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:04:56,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:04:56,945 INFO L85 PathProgramCache]: Analyzing trace with hash 103245908, now seen corresponding path program 1 times [2023-12-25 17:04:56,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:04:56,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747231663] [2023-12-25 17:04:56,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:04:56,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:04:57,242 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:04:57,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [779135362] [2023-12-25 17:04:57,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:04:57,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:04:57,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:04:57,244 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:04:57,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2023-12-25 17:05:00,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:05:00,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 16937 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 17:05:00,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:05:01,039 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 66 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:05:01,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:05:01,077 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-12-25 17:05:01,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:05:01,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747231663] [2023-12-25 17:05:01,077 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:05:01,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779135362] [2023-12-25 17:05:01,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779135362] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:05:01,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:05:01,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-25 17:05:01,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122087367] [2023-12-25 17:05:01,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:05:01,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:05:01,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:05:01,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:05:01,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:05:01,081 INFO L87 Difference]: Start difference. First operand 5414 states and 8980 transitions. Second operand has 4 states, 4 states have (on average 806.0) internal successors, (3224), 4 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states 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 17:05:01,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:05:01,203 INFO L93 Difference]: Finished difference Result 15052 states and 24959 transitions. [2023-12-25 17:05:01,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:05:01,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 806.0) internal successors, (3224), 4 states have internal predecessors, (3224), 0 states have call successors, (0), 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 3432 [2023-12-25 17:05:01,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:05:01,213 INFO L225 Difference]: With dead ends: 15052 [2023-12-25 17:05:01,213 INFO L226 Difference]: Without dead ends: 10136 [2023-12-25 17:05:01,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6862 GetRequests, 6855 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:05:01,217 INFO L413 NwaCegarLoop]: 8618 mSDtfsCounter, 7707 mSDsluCounter, 16629 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7707 SdHoareTripleChecker+Valid, 25247 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:05:01,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7707 Valid, 25247 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:05:01,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10136 states. [2023-12-25 17:05:01,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10136 to 5414. [2023-12-25 17:05:01,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5413 states have (on average 1.6589691483465732) internal successors, (8980), 5413 states have internal predecessors, (8980), 0 states have call successors, (0), 0 states 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 17:05:01,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 8980 transitions. [2023-12-25 17:05:01,269 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 8980 transitions. Word has length 3432 [2023-12-25 17:05:01,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:05:01,271 INFO L495 AbstractCegarLoop]: Abstraction has 5414 states and 8980 transitions. [2023-12-25 17:05:01,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 806.0) internal successors, (3224), 4 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states 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 17:05:01,271 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 8980 transitions. [2023-12-25 17:05:01,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3434 [2023-12-25 17:05:01,328 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:05:01,329 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:05:01,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2023-12-25 17:05:01,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2023-12-25 17:05:01,530 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:05:01,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:05:01,531 INFO L85 PathProgramCache]: Analyzing trace with hash -304572970, now seen corresponding path program 1 times [2023-12-25 17:05:01,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:05:01,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639897229] [2023-12-25 17:05:01,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:05:01,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:05:01,725 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:05:01,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [643275626] [2023-12-25 17:05:01,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:05:01,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:05:01,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:05:01,727 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:05:01,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2023-12-25 17:05:05,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:05:05,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 16940 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 17:05:05,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:05:05,573 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 62 proven. 246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:05:05,573 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:05:05,624 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-12-25 17:05:05,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:05:05,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639897229] [2023-12-25 17:05:05,624 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:05:05,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643275626] [2023-12-25 17:05:05,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643275626] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:05:05,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:05:05,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-25 17:05:05,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914579957] [2023-12-25 17:05:05,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:05:05,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:05:05,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:05:05,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:05:05,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:05:05,629 INFO L87 Difference]: Start difference. First operand 5414 states and 8980 transitions. Second operand has 5 states, 5 states have (on average 644.6) internal successors, (3223), 5 states have internal predecessors, (3223), 0 states have call successors, (0), 0 states 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 17:05:06,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:05:06,005 INFO L93 Difference]: Finished difference Result 19947 states and 33076 transitions. [2023-12-25 17:05:06,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:05:06,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 644.6) internal successors, (3223), 5 states have internal predecessors, (3223), 0 states have call successors, (0), 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 3433 [2023-12-25 17:05:06,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:05:06,029 INFO L225 Difference]: With dead ends: 19947 [2023-12-25 17:05:06,029 INFO L226 Difference]: Without dead ends: 15037 [2023-12-25 17:05:06,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6864 GetRequests, 6855 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:05:06,033 INFO L413 NwaCegarLoop]: 16418 mSDtfsCounter, 15499 mSDsluCounter, 40837 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15499 SdHoareTripleChecker+Valid, 57255 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:05:06,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15499 Valid, 57255 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:05:06,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15037 states. [2023-12-25 17:05:06,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15037 to 5414. [2023-12-25 17:05:06,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5413 states have (on average 1.6589691483465732) internal successors, (8980), 5413 states have internal predecessors, (8980), 0 states have call successors, (0), 0 states 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 17:05:06,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 8980 transitions. [2023-12-25 17:05:06,110 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 8980 transitions. Word has length 3433 [2023-12-25 17:05:06,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:05:06,111 INFO L495 AbstractCegarLoop]: Abstraction has 5414 states and 8980 transitions. [2023-12-25 17:05:06,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 644.6) internal successors, (3223), 5 states have internal predecessors, (3223), 0 states have call successors, (0), 0 states 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 17:05:06,112 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 8980 transitions. [2023-12-25 17:05:06,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3435 [2023-12-25 17:05:06,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:05:06,172 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:05:06,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2023-12-25 17:05:06,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2023-12-25 17:05:06,373 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:05:06,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:05:06,373 INFO L85 PathProgramCache]: Analyzing trace with hash 140056080, now seen corresponding path program 1 times [2023-12-25 17:05:06,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:05:06,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440187643] [2023-12-25 17:05:06,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:05:06,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:05:06,574 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:05:06,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [902430366] [2023-12-25 17:05:06,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:05:06,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:05:06,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:05:06,576 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:05:06,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2023-12-25 17:05:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:05:10,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 16943 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 17:05:10,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:05:10,427 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 58 proven. 250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:05:10,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:05:10,465 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-12-25 17:05:10,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:05:10,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440187643] [2023-12-25 17:05:10,465 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:05:10,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902430366] [2023-12-25 17:05:10,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902430366] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:05:10,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:05:10,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-25 17:05:10,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5596259] [2023-12-25 17:05:10,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:05:10,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:05:10,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:05:10,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:05:10,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:05:10,469 INFO L87 Difference]: Start difference. First operand 5414 states and 8980 transitions. Second operand has 4 states, 4 states have (on average 805.5) internal successors, (3222), 4 states have internal predecessors, (3222), 0 states have call successors, (0), 0 states 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 17:05:10,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:05:10,600 INFO L93 Difference]: Finished difference Result 15052 states and 24959 transitions. [2023-12-25 17:05:10,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:05:10,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 805.5) internal successors, (3222), 4 states have internal predecessors, (3222), 0 states have call successors, (0), 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 3434 [2023-12-25 17:05:10,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:05:10,610 INFO L225 Difference]: With dead ends: 15052 [2023-12-25 17:05:10,611 INFO L226 Difference]: Without dead ends: 10148 [2023-12-25 17:05:10,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6866 GetRequests, 6859 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:05:10,616 INFO L413 NwaCegarLoop]: 8638 mSDtfsCounter, 7713 mSDsluCounter, 16649 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7713 SdHoareTripleChecker+Valid, 25287 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:05:10,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7713 Valid, 25287 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:05:10,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10148 states. [2023-12-25 17:05:10,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10148 to 5414. [2023-12-25 17:05:10,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5413 states have (on average 1.6589691483465732) internal successors, (8980), 5413 states have internal predecessors, (8980), 0 states have call successors, (0), 0 states 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 17:05:10,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 8980 transitions. [2023-12-25 17:05:10,671 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 8980 transitions. Word has length 3434 [2023-12-25 17:05:10,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:05:10,673 INFO L495 AbstractCegarLoop]: Abstraction has 5414 states and 8980 transitions. [2023-12-25 17:05:10,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 805.5) internal successors, (3222), 4 states have internal predecessors, (3222), 0 states have call successors, (0), 0 states 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 17:05:10,673 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 8980 transitions. [2023-12-25 17:05:10,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3436 [2023-12-25 17:05:10,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:05:10,732 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:05:10,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2023-12-25 17:05:10,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:05:10,933 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:05:10,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:05:10,933 INFO L85 PathProgramCache]: Analyzing trace with hash -603470122, now seen corresponding path program 1 times [2023-12-25 17:05:10,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:05:10,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572368337] [2023-12-25 17:05:10,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:05:10,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:05:11,148 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:05:11,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [496712977] [2023-12-25 17:05:11,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:05:11,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:05:11,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:05:11,150 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:05:11,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2023-12-25 17:05:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:05:14,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 16946 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 17:05:14,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:05:15,205 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 54 proven. 254 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:05:15,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:05:15,259 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-12-25 17:05:15,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:05:15,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572368337] [2023-12-25 17:05:15,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:05:15,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496712977] [2023-12-25 17:05:15,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496712977] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:05:15,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:05:15,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-25 17:05:15,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889726798] [2023-12-25 17:05:15,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:05:15,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 17:05:15,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:05:15,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 17:05:15,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:05:15,264 INFO L87 Difference]: Start difference. First operand 5414 states and 8980 transitions. Second operand has 5 states, 5 states have (on average 644.2) internal successors, (3221), 5 states have internal predecessors, (3221), 0 states have call successors, (0), 0 states 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 17:05:15,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:05:15,497 INFO L93 Difference]: Finished difference Result 19935 states and 33056 transitions. [2023-12-25 17:05:15,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 17:05:15,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 644.2) internal successors, (3221), 5 states have internal predecessors, (3221), 0 states have call successors, (0), 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 3435 [2023-12-25 17:05:15,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:05:15,513 INFO L225 Difference]: With dead ends: 19935 [2023-12-25 17:05:15,513 INFO L226 Difference]: Without dead ends: 15037 [2023-12-25 17:05:15,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6868 GetRequests, 6859 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-25 17:05:15,520 INFO L413 NwaCegarLoop]: 16438 mSDtfsCounter, 15505 mSDsluCounter, 40877 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15505 SdHoareTripleChecker+Valid, 57315 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:05:15,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15505 Valid, 57315 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:05:15,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15037 states. [2023-12-25 17:05:15,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15037 to 5414. [2023-12-25 17:05:15,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5413 states have (on average 1.6589691483465732) internal successors, (8980), 5413 states have internal predecessors, (8980), 0 states have call successors, (0), 0 states 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 17:05:15,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 8980 transitions. [2023-12-25 17:05:15,593 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 8980 transitions. Word has length 3435 [2023-12-25 17:05:15,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:05:15,594 INFO L495 AbstractCegarLoop]: Abstraction has 5414 states and 8980 transitions. [2023-12-25 17:05:15,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 644.2) internal successors, (3221), 5 states have internal predecessors, (3221), 0 states have call successors, (0), 0 states 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 17:05:15,595 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 8980 transitions. [2023-12-25 17:05:15,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3437 [2023-12-25 17:05:15,653 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:05:15,653 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:05:15,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2023-12-25 17:05:15,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:05:15,854 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:05:15,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:05:15,855 INFO L85 PathProgramCache]: Analyzing trace with hash -677996724, now seen corresponding path program 1 times [2023-12-25 17:05:15,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:05:15,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81220440] [2023-12-25 17:05:15,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:05:15,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:05:16,062 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:05:16,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1152131530] [2023-12-25 17:05:16,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:05:16,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:05:16,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:05:16,064 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:05:16,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2023-12-25 17:05:19,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:05:19,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 16949 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 17:05:19,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:05:19,920 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 50 proven. 258 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:05:19,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:05:19,959 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-12-25 17:05:19,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:05:19,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81220440] [2023-12-25 17:05:19,959 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:05:19,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152131530] [2023-12-25 17:05:19,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152131530] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:05:19,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:05:19,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-25 17:05:19,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118666866] [2023-12-25 17:05:19,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:05:19,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:05:19,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:05:19,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:05:19,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:05:19,963 INFO L87 Difference]: Start difference. First operand 5414 states and 8980 transitions. Second operand has 4 states, 4 states have (on average 805.0) internal successors, (3220), 4 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states 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 17:05:20,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:05:20,097 INFO L93 Difference]: Finished difference Result 15052 states and 24959 transitions. [2023-12-25 17:05:20,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:05:20,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 805.0) internal successors, (3220), 4 states have internal predecessors, (3220), 0 states have call successors, (0), 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 3436 [2023-12-25 17:05:20,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:05:20,108 INFO L225 Difference]: With dead ends: 15052 [2023-12-25 17:05:20,108 INFO L226 Difference]: Without dead ends: 10160 [2023-12-25 17:05:20,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6870 GetRequests, 6863 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:05:20,113 INFO L413 NwaCegarLoop]: 8658 mSDtfsCounter, 7719 mSDsluCounter, 16669 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7719 SdHoareTripleChecker+Valid, 25327 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:05:20,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7719 Valid, 25327 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:05:20,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10160 states. [2023-12-25 17:05:20,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10160 to 5414. [2023-12-25 17:05:20,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5413 states have (on average 1.6589691483465732) internal successors, (8980), 5413 states have internal predecessors, (8980), 0 states have call successors, (0), 0 states 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 17:05:20,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 8980 transitions. [2023-12-25 17:05:20,169 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 8980 transitions. Word has length 3436 [2023-12-25 17:05:20,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:05:20,170 INFO L495 AbstractCegarLoop]: Abstraction has 5414 states and 8980 transitions. [2023-12-25 17:05:20,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 805.0) internal successors, (3220), 4 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states 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 17:05:20,171 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 8980 transitions. [2023-12-25 17:05:20,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3438 [2023-12-25 17:05:20,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:05:20,229 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:05:20,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2023-12-25 17:05:20,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:05:20,430 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:05:20,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:05:20,430 INFO L85 PathProgramCache]: Analyzing trace with hash -11129002, now seen corresponding path program 1 times [2023-12-25 17:05:20,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:05:20,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769118934] [2023-12-25 17:05:20,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:05:20,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:05:20,628 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:05:20,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1875699598] [2023-12-25 17:05:20,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:05:20,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:05:20,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:05:20,630 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:05:20,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2023-12-25 17:05:24,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:05:24,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 16952 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 17:05:24,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:05:24,753 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 46 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:05:24,753 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:05:24,791 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-12-25 17:05:24,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:05:24,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769118934] [2023-12-25 17:05:24,791 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:05:24,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875699598] [2023-12-25 17:05:24,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875699598] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 17:05:24,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 17:05:24,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-25 17:05:24,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754713282] [2023-12-25 17:05:24,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 17:05:24,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 17:05:24,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:05:24,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 17:05:24,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:05:24,795 INFO L87 Difference]: Start difference. First operand 5414 states and 8980 transitions. Second operand has 4 states, 4 states have (on average 804.75) internal successors, (3219), 4 states have internal predecessors, (3219), 0 states have call successors, (0), 0 states 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 17:05:24,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:05:24,924 INFO L93 Difference]: Finished difference Result 15052 states and 24959 transitions. [2023-12-25 17:05:24,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 17:05:24,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 804.75) internal successors, (3219), 4 states have internal predecessors, (3219), 0 states have call successors, (0), 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 3437 [2023-12-25 17:05:24,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:05:24,936 INFO L225 Difference]: With dead ends: 15052 [2023-12-25 17:05:24,936 INFO L226 Difference]: Without dead ends: 10166 [2023-12-25 17:05:24,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6872 GetRequests, 6865 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-25 17:05:24,940 INFO L413 NwaCegarLoop]: 8668 mSDtfsCounter, 7722 mSDsluCounter, 16679 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7722 SdHoareTripleChecker+Valid, 25347 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:05:24,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7722 Valid, 25347 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 17:05:24,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10166 states. [2023-12-25 17:05:24,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10166 to 5414. [2023-12-25 17:05:24,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5413 states have (on average 1.6589691483465732) internal successors, (8980), 5413 states have internal predecessors, (8980), 0 states have call successors, (0), 0 states 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 17:05:24,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 8980 transitions. [2023-12-25 17:05:24,999 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 8980 transitions. Word has length 3437 [2023-12-25 17:05:25,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:05:25,000 INFO L495 AbstractCegarLoop]: Abstraction has 5414 states and 8980 transitions. [2023-12-25 17:05:25,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 804.75) internal successors, (3219), 4 states have internal predecessors, (3219), 0 states have call successors, (0), 0 states 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 17:05:25,001 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 8980 transitions. [2023-12-25 17:05:25,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3439 [2023-12-25 17:05:25,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:05:25,062 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:05:25,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2023-12-25 17:05:25,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2023-12-25 17:05:25,263 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:05:25,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:05:25,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1116089352, now seen corresponding path program 1 times [2023-12-25 17:05:25,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:05:25,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698367634] [2023-12-25 17:05:25,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:05:25,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:05:25,467 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:05:25,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1801479076] [2023-12-25 17:05:25,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:05:25,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:05:25,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:05:25,469 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:05:25,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2023-12-25 17:05:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:05:29,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 16955 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-25 17:05:29,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:05:32,208 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 128 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:05:32,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:05:41,626 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 166 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:05:41,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:05:41,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698367634] [2023-12-25 17:05:41,626 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:05:41,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801479076] [2023-12-25 17:05:41,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801479076] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 17:05:41,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 17:05:41,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2023-12-25 17:05:41,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632370920] [2023-12-25 17:05:41,627 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 17:05:41,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-25 17:05:41,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:05:41,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-25 17:05:41,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2023-12-25 17:05:41,633 INFO L87 Difference]: Start difference. First operand 5414 states and 8980 transitions. Second operand has 20 states, 20 states have (on average 334.15) internal successors, (6683), 20 states have internal predecessors, (6683), 0 states have call successors, (0), 0 states 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 17:05:51,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:05:51,043 INFO L93 Difference]: Finished difference Result 25555 states and 42379 transitions. [2023-12-25 17:05:51,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-25 17:05:51,044 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 334.15) internal successors, (6683), 20 states have internal predecessors, (6683), 0 states have call successors, (0), 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 3438 [2023-12-25 17:05:51,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:05:51,061 INFO L225 Difference]: With dead ends: 25555 [2023-12-25 17:05:51,062 INFO L226 Difference]: Without dead ends: 20730 [2023-12-25 17:05:51,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6896 GetRequests, 6861 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=298, Invalid=1034, Unknown=0, NotChecked=0, Total=1332 [2023-12-25 17:05:51,067 INFO L413 NwaCegarLoop]: 15937 mSDtfsCounter, 72467 mSDsluCounter, 157768 mSDsCounter, 0 mSdLazyCounter, 12473 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72467 SdHoareTripleChecker+Valid, 173705 SdHoareTripleChecker+Invalid, 12475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-12-25 17:05:51,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72467 Valid, 173705 Invalid, 12475 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [2 Valid, 12473 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2023-12-25 17:05:51,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20730 states. [2023-12-25 17:05:51,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20730 to 11053. [2023-12-25 17:05:51,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11053 states, 11052 states have (on average 1.659247195077814) internal successors, (18338), 11052 states have internal predecessors, (18338), 0 states have call successors, (0), 0 states 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 17:05:51,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11053 states to 11053 states and 18338 transitions. [2023-12-25 17:05:51,208 INFO L78 Accepts]: Start accepts. Automaton has 11053 states and 18338 transitions. Word has length 3438 [2023-12-25 17:05:51,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:05:51,209 INFO L495 AbstractCegarLoop]: Abstraction has 11053 states and 18338 transitions. [2023-12-25 17:05:51,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 334.15) internal successors, (6683), 20 states have internal predecessors, (6683), 0 states have call successors, (0), 0 states 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 17:05:51,210 INFO L276 IsEmpty]: Start isEmpty. Operand 11053 states and 18338 transitions. [2023-12-25 17:05:51,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3440 [2023-12-25 17:05:51,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:05:51,274 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:05:51,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2023-12-25 17:05:51,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:05:51,475 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:05:51,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:05:51,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1563091508, now seen corresponding path program 1 times [2023-12-25 17:05:51,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:05:51,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651999657] [2023-12-25 17:05:51,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:05:51,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:05:51,679 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:05:51,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [407056219] [2023-12-25 17:05:51,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:05:51,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:05:51,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:05:51,681 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:05:51,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2023-12-25 17:05:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:05:55,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 16958 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-25 17:05:55,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:05:58,694 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 90 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:05:58,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:06:01,845 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 150 proven. 158 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:06:01,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:06:01,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651999657] [2023-12-25 17:06:01,846 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:06:01,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407056219] [2023-12-25 17:06:01,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407056219] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 17:06:01,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 17:06:01,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 20 [2023-12-25 17:06:01,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408220270] [2023-12-25 17:06:01,847 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 17:06:01,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-25 17:06:01,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:06:01,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-25 17:06:01,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2023-12-25 17:06:01,854 INFO L87 Difference]: Start difference. First operand 11053 states and 18338 transitions. Second operand has 20 states, 20 states have (on average 337.1) internal successors, (6742), 20 states have internal predecessors, (6742), 0 states have call successors, (0), 0 states 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 17:06:20,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 17:06:20,299 INFO L93 Difference]: Finished difference Result 55189 states and 91452 transitions. [2023-12-25 17:06:20,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-25 17:06:20,300 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 337.1) internal successors, (6742), 20 states have internal predecessors, (6742), 0 states have call successors, (0), 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 3439 [2023-12-25 17:06:20,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 17:06:20,345 INFO L225 Difference]: With dead ends: 55189 [2023-12-25 17:06:20,345 INFO L226 Difference]: Without dead ends: 45121 [2023-12-25 17:06:20,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6898 GetRequests, 6863 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=321, Invalid=1011, Unknown=0, NotChecked=0, Total=1332 [2023-12-25 17:06:20,363 INFO L413 NwaCegarLoop]: 12644 mSDtfsCounter, 88666 mSDsluCounter, 125959 mSDsCounter, 0 mSdLazyCounter, 39499 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88666 SdHoareTripleChecker+Valid, 138603 SdHoareTripleChecker+Invalid, 39504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 39499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2023-12-25 17:06:20,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88666 Valid, 138603 Invalid, 39504 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [5 Valid, 39499 Invalid, 0 Unknown, 0 Unchecked, 16.8s Time] [2023-12-25 17:06:20,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45121 states. [2023-12-25 17:06:20,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45121 to 17151. [2023-12-25 17:06:20,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17151 states, 17150 states have (on average 1.659533527696793) internal successors, (28461), 17150 states have internal predecessors, (28461), 0 states have call successors, (0), 0 states 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 17:06:20,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17151 states to 17151 states and 28461 transitions. [2023-12-25 17:06:20,673 INFO L78 Accepts]: Start accepts. Automaton has 17151 states and 28461 transitions. Word has length 3439 [2023-12-25 17:06:20,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 17:06:20,674 INFO L495 AbstractCegarLoop]: Abstraction has 17151 states and 28461 transitions. [2023-12-25 17:06:20,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 337.1) internal successors, (6742), 20 states have internal predecessors, (6742), 0 states have call successors, (0), 0 states 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 17:06:20,675 INFO L276 IsEmpty]: Start isEmpty. Operand 17151 states and 28461 transitions. [2023-12-25 17:06:20,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3441 [2023-12-25 17:06:20,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 17:06:20,884 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:06:20,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2023-12-25 17:06:21,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:06:21,085 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 17:06:21,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 17:06:21,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1104098074, now seen corresponding path program 1 times [2023-12-25 17:06:21,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 17:06:21,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894078102] [2023-12-25 17:06:21,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:06:21,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 17:06:21,300 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 17:06:21,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1128301171] [2023-12-25 17:06:21,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 17:06:21,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 17:06:21,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 17:06:21,302 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 17:06:21,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2023-12-25 17:06:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 17:06:24,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 16961 conjuncts, 81 conjunts are in the unsatisfiable core [2023-12-25 17:06:24,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 17:06:51,030 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 44 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:06:51,030 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 17:07:11,182 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 128 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 17:07:11,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 17:07:11,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894078102] [2023-12-25 17:07:11,182 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 17:07:11,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128301171] [2023-12-25 17:07:11,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128301171] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 17:07:11,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 17:07:11,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 19] total 44 [2023-12-25 17:07:11,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447615918] [2023-12-25 17:07:11,183 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 17:07:11,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-25 17:07:11,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 17:07:11,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-25 17:07:11,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1656, Unknown=0, NotChecked=0, Total=1892 [2023-12-25 17:07:11,189 INFO L87 Difference]: Start difference. First operand 17151 states and 28461 transitions. Second operand has 44 states, 44 states have (on average 154.86363636363637) internal successors, (6814), 44 states have internal predecessors, (6814), 0 states have call successors, (0), 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 17:09:29,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2023-12-25 17:09:29,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6974 GetRequests, 6835 SyntacticMatches, 1 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5204 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=2122, Invalid=17338, Unknown=0, NotChecked=0, Total=19460 [2023-12-25 17:09:29,719 INFO L413 NwaCegarLoop]: 30649 mSDtfsCounter, 132934 mSDsluCounter, 633466 mSDsCounter, 0 mSdLazyCounter, 193292 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 101.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132934 SdHoareTripleChecker+Valid, 664115 SdHoareTripleChecker+Invalid, 193331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.9s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 193292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 118.9s IncrementalHoareTripleChecker+Time [2023-12-25 17:09:29,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132934 Valid, 664115 Invalid, 193331 Unknown, 0 Unchecked, 1.9s Time], IncrementalHoareTripleChecker [39 Valid, 193292 Invalid, 0 Unknown, 0 Unchecked, 118.9s Time] [2023-12-25 17:09:29,720 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 17:09:29,734 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 17:09:29,735 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 17:09:29,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2023-12-25 17:09:29,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2023-12-25 17:09:29,921 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (17151states) and FLOYD_HOARE automaton (currently 104 states, 44 states before enhancement),while ReachableStatesComputation was computing reachable states (145460 states constructed, input type IntersectNwa). [2023-12-25 17:09:29,924 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, 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 17:09:29,926 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 17:09:29,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 05:09:29 BoogieIcfgContainer [2023-12-25 17:09:29,927 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 17:09:29,927 INFO L158 Benchmark]: Toolchain (without parser) took 803556.57ms. Allocated memory was 273.7MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 212.7MB in the beginning and 1.1GB in the end (delta: -853.5MB). Peak memory consumption was 3.4GB. Max. memory is 8.0GB. [2023-12-25 17:09:29,927 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 185.6MB. Free memory is still 131.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 17:09:29,927 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1201.53ms. Allocated memory is still 273.7MB. Free memory was 212.7MB in the beginning and 164.5MB in the end (delta: 48.2MB). Peak memory consumption was 215.2MB. Max. memory is 8.0GB. [2023-12-25 17:09:29,927 INFO L158 Benchmark]: Boogie Procedure Inliner took 1335.30ms. Allocated memory was 273.7MB in the beginning and 1.1GB in the end (delta: 821.0MB). Free memory was 164.1MB in the beginning and 740.6MB in the end (delta: -576.5MB). Peak memory consumption was 261.1MB. Max. memory is 8.0GB. [2023-12-25 17:09:29,927 INFO L158 Benchmark]: Boogie Preprocessor took 1501.23ms. Allocated memory was 1.1GB in the beginning and 2.4GB in the end (delta: 1.3GB). Free memory was 740.6MB in the beginning and 2.0GB in the end (delta: -1.3GB). Peak memory consumption was 165.2MB. Max. memory is 8.0GB. [2023-12-25 17:09:29,928 INFO L158 Benchmark]: RCFGBuilder took 8686.55ms. Allocated memory is still 2.4GB. Free memory was 2.0GB in the beginning and 687.1MB in the end (delta: 1.3GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2023-12-25 17:09:29,928 INFO L158 Benchmark]: TraceAbstraction took 790826.30ms. Allocated memory was 2.4GB in the beginning and 3.7GB in the end (delta: 1.3GB). Free memory was 686.1MB in the beginning and 1.1GB in the end (delta: -380.1MB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-12-25 17:09:29,928 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 185.6MB. Free memory is still 131.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1201.53ms. Allocated memory is still 273.7MB. Free memory was 212.7MB in the beginning and 164.5MB in the end (delta: 48.2MB). Peak memory consumption was 215.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 1335.30ms. Allocated memory was 273.7MB in the beginning and 1.1GB in the end (delta: 821.0MB). Free memory was 164.1MB in the beginning and 740.6MB in the end (delta: -576.5MB). Peak memory consumption was 261.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 1501.23ms. Allocated memory was 1.1GB in the beginning and 2.4GB in the end (delta: 1.3GB). Free memory was 740.6MB in the beginning and 2.0GB in the end (delta: -1.3GB). Peak memory consumption was 165.2MB. Max. memory is 8.0GB. * RCFGBuilder took 8686.55ms. Allocated memory is still 2.4GB. Free memory was 2.0GB in the beginning and 687.1MB in the end (delta: 1.3GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. * TraceAbstraction took 790826.30ms. Allocated memory was 2.4GB in the beginning and 3.7GB in the end (delta: 1.3GB). Free memory was 686.1MB in the beginning and 1.1GB in the end (delta: -380.1MB). Peak memory consumption was 1.8GB. 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 (17151states) and FLOYD_HOARE automaton (currently 104 states, 44 states before enhancement),while ReachableStatesComputation was computing reachable states (145460 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 4803 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 790.8s, OverallIterations: 78, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 5.0s, AutomataDifference: 379.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1389014 SdHoareTripleChecker+Valid, 337.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1389014 mSDsluCounter, 3602027 SdHoareTripleChecker+Invalid, 280.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2597827 mSDsCounter, 16173 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 562088 IncrementalHoareTripleChecker+Invalid, 578261 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16173 mSolverCounterUnsat, 1004200 mSDtfsCounter, 562088 mSolverCounterSat, 7.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 480231 GetRequests, 479422 SyntacticMatches, 1 SemanticMatches, 808 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5900 ImplicationChecksByTransitivity, 8.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17151occurred in iteration=77, InterpolantAutomatonStates: 455, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.2s AutomataMinimizationTime, 77 MinimizatonAttempts, 429385 StatesRemovedByMinimization, 76 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 69.4s SsaConstructionTime, 153.0s SatisfiabilityAnalysisTime, 106.5s InterpolantComputationTime, 256473 NumberOfCodeBlocks, 256473 NumberOfCodeBlocksAsserted, 78 NumberOfCheckSat, 481224 ConstructedInterpolants, 0 QuantifiedInterpolants, 729194 SizeOfPredicates, 326 NumberOfNonLiveVariables, 1263244 ConjunctsInSsa, 1256 ConjunctsInUnsatCore, 144 InterpolantComputations, 75 PerfectInterpolantSequences, 27225/43428 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