/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-81.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 20:20:05,255 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 20:20:05,306 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 20:20:05,309 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 20:20:05,309 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 20:20:05,337 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 20:20:05,338 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 20:20:05,338 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 20:20:05,339 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 20:20:05,342 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 20:20:05,342 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 20:20:05,342 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 20:20:05,342 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 20:20:05,343 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 20:20:05,344 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 20:20:05,344 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 20:20:05,344 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 20:20:05,344 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 20:20:05,344 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 20:20:05,345 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 20:20:05,345 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 20:20:05,346 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 20:20:05,346 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 20:20:05,346 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 20:20:05,346 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 20:20:05,346 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 20:20:05,347 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 20:20:05,347 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 20:20:05,347 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 20:20:05,347 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 20:20:05,348 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 20:20:05,348 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 20:20:05,348 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:20:05,348 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 20:20:05,349 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 20:20:05,349 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 20:20:05,349 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 20:20:05,349 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 20:20:05,349 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 20:20:05,350 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 20:20:05,350 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 20:20:05,350 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 20:20:05,350 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 20:20:05,350 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 20:20:05,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 20:20:05,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 20:20:05,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 20:20:05,567 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 20:20:05,570 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 20:20:05,570 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-81.i [2023-12-15 20:20:06,654 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 20:20:06,825 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 20:20:06,826 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-81.i [2023-12-15 20:20:06,833 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/969930feb/d2109d2e39264146b1e238de8cafa6b0/FLAG46adf2d2e [2023-12-15 20:20:07,222 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/969930feb/d2109d2e39264146b1e238de8cafa6b0 [2023-12-15 20:20:07,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 20:20:07,225 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 20:20:07,226 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 20:20:07,226 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 20:20:07,233 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 20:20:07,234 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:20:07" (1/1) ... [2023-12-15 20:20:07,234 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6416ae71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:20:07, skipping insertion in model container [2023-12-15 20:20:07,234 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:20:07" (1/1) ... [2023-12-15 20:20:07,267 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 20:20:07,376 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-81.i[919,932] [2023-12-15 20:20:07,435 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:20:07,444 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 20:20:07,452 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-81.i[919,932] [2023-12-15 20:20:07,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:20:07,524 INFO L206 MainTranslator]: Completed translation [2023-12-15 20:20:07,525 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:20:07 WrapperNode [2023-12-15 20:20:07,525 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 20:20:07,526 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 20:20:07,527 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 20:20:07,527 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 20:20:07,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:20:07" (1/1) ... [2023-12-15 20:20:07,550 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:20:07" (1/1) ... [2023-12-15 20:20:07,589 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 260 [2023-12-15 20:20:07,589 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 20:20:07,590 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 20:20:07,590 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 20:20:07,590 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 20:20:07,598 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:20:07" (1/1) ... [2023-12-15 20:20:07,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:20:07" (1/1) ... [2023-12-15 20:20:07,608 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:20:07" (1/1) ... [2023-12-15 20:20:07,631 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]. [2023-12-15 20:20:07,631 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:20:07" (1/1) ... [2023-12-15 20:20:07,632 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:20:07" (1/1) ... [2023-12-15 20:20:07,642 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:20:07" (1/1) ... [2023-12-15 20:20:07,644 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:20:07" (1/1) ... [2023-12-15 20:20:07,646 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:20:07" (1/1) ... [2023-12-15 20:20:07,647 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:20:07" (1/1) ... [2023-12-15 20:20:07,657 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 20:20:07,658 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 20:20:07,658 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 20:20:07,658 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 20:20:07,659 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:20:07" (1/1) ... [2023-12-15 20:20:07,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:20:07,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:20:07,693 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) [2023-12-15 20:20:07,702 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 [2023-12-15 20:20:07,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 20:20:07,719 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 20:20:07,720 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 20:20:07,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 20:20:07,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 20:20:07,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 20:20:07,782 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 20:20:07,784 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 20:20:08,064 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 20:20:08,103 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 20:20:08,104 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 20:20:08,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:20:08 BoogieIcfgContainer [2023-12-15 20:20:08,104 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 20:20:08,108 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 20:20:08,108 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 20:20:08,110 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 20:20:08,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 08:20:07" (1/3) ... [2023-12-15 20:20:08,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6358713a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:20:08, skipping insertion in model container [2023-12-15 20:20:08,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:20:07" (2/3) ... [2023-12-15 20:20:08,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6358713a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:20:08, skipping insertion in model container [2023-12-15 20:20:08,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:20:08" (3/3) ... [2023-12-15 20:20:08,112 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-81.i [2023-12-15 20:20:08,122 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 20:20:08,122 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 20:20:08,151 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 20:20:08,155 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;@65ac01fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 20:20:08,156 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 20:20:08,158 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 62 states have (on average 1.5483870967741935) internal successors, (96), 63 states have internal predecessors, (96), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-15 20:20:08,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-15 20:20:08,175 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:20:08,176 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:20:08,176 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:20:08,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:20:08,180 INFO L85 PathProgramCache]: Analyzing trace with hash 424328497, now seen corresponding path program 1 times [2023-12-15 20:20:08,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:20:08,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286589693] [2023-12-15 20:20:08,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:08,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:20:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:20:08,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:20:08,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286589693] [2023-12-15 20:20:08,321 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 20:20:08,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881844592] [2023-12-15 20:20:08,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:08,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:20:08,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:20:08,324 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) [2023-12-15 20:20:08,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 20:20:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:20:08,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 20:20:08,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:20:08,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2023-12-15 20:20:08,585 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:20:08,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881844592] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:20:08,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:20:08,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 20:20:08,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630998896] [2023-12-15 20:20:08,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:20:08,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 20:20:08,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:20:08,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 20:20:08,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:20:08,622 INFO L87 Difference]: Start difference. First operand has 96 states, 62 states have (on average 1.5483870967741935) internal successors, (96), 63 states have internal predecessors, (96), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-15 20:20:08,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:20:08,659 INFO L93 Difference]: Finished difference Result 188 states and 343 transitions. [2023-12-15 20:20:08,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 20:20:08,661 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 198 [2023-12-15 20:20:08,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:20:08,666 INFO L225 Difference]: With dead ends: 188 [2023-12-15 20:20:08,666 INFO L226 Difference]: Without dead ends: 93 [2023-12-15 20:20:08,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:20:08,672 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:20:08,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 147 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:20:08,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-15 20:20:08,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-12-15 20:20:08,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 60 states have (on average 1.4666666666666666) internal successors, (88), 60 states have internal predecessors, (88), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-15 20:20:08,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 150 transitions. [2023-12-15 20:20:08,721 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 150 transitions. Word has length 198 [2023-12-15 20:20:08,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:20:08,721 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 150 transitions. [2023-12-15 20:20:08,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-15 20:20:08,721 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 150 transitions. [2023-12-15 20:20:08,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-15 20:20:08,724 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:20:08,724 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:20:08,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 20:20:08,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 20:20:08,935 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:20:08,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:20:08,936 INFO L85 PathProgramCache]: Analyzing trace with hash -323311877, now seen corresponding path program 1 times [2023-12-15 20:20:08,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:20:08,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361229058] [2023-12-15 20:20:08,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:08,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:20:08,975 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:20:08,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1269484978] [2023-12-15 20:20:08,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:08,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:20:08,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:20:08,976 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) [2023-12-15 20:20:09,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 20:20:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:20:09,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 20:20:09,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:20:09,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 30 proven. 90 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2023-12-15 20:20:09,347 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:20:09,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2023-12-15 20:20:09,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:20:09,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361229058] [2023-12-15 20:20:09,549 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:20:09,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269484978] [2023-12-15 20:20:09,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269484978] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:20:09,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:20:09,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-15 20:20:09,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243808161] [2023-12-15 20:20:09,549 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:20:09,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 20:20:09,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:20:09,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 20:20:09,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-12-15 20:20:09,552 INFO L87 Difference]: Start difference. First operand 93 states and 150 transitions. Second operand has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 3 states have call successors, (61), 2 states have call predecessors, (61), 4 states have return successors, (62), 2 states have call predecessors, (62), 3 states have call successors, (62) [2023-12-15 20:20:10,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:20:10,282 INFO L93 Difference]: Finished difference Result 364 states and 570 transitions. [2023-12-15 20:20:10,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-15 20:20:10,283 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 3 states have call successors, (61), 2 states have call predecessors, (61), 4 states have return successors, (62), 2 states have call predecessors, (62), 3 states have call successors, (62) Word has length 198 [2023-12-15 20:20:10,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:20:10,286 INFO L225 Difference]: With dead ends: 364 [2023-12-15 20:20:10,286 INFO L226 Difference]: Without dead ends: 272 [2023-12-15 20:20:10,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2023-12-15 20:20:10,287 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 254 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 20:20:10,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 598 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 20:20:10,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-12-15 20:20:10,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 112. [2023-12-15 20:20:10,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 78 states have (on average 1.5) internal successors, (117), 78 states have internal predecessors, (117), 31 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-15 20:20:10,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 179 transitions. [2023-12-15 20:20:10,306 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 179 transitions. Word has length 198 [2023-12-15 20:20:10,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:20:10,307 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 179 transitions. [2023-12-15 20:20:10,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 3 states have call successors, (61), 2 states have call predecessors, (61), 4 states have return successors, (62), 2 states have call predecessors, (62), 3 states have call successors, (62) [2023-12-15 20:20:10,307 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 179 transitions. [2023-12-15 20:20:10,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-15 20:20:10,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:20:10,309 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:20:10,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 20:20:10,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 20:20:10,515 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:20:10,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:20:10,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1946754454, now seen corresponding path program 1 times [2023-12-15 20:20:10,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:20:10,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574288118] [2023-12-15 20:20:10,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:10,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:20:10,567 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:20:10,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [390796337] [2023-12-15 20:20:10,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:10,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:20:10,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:20:10,570 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) [2023-12-15 20:20:10,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 20:20:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:20:10,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 20:20:10,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:20:10,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 850 proven. 60 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2023-12-15 20:20:10,847 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:20:11,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 30 proven. 60 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2023-12-15 20:20:11,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:20:11,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574288118] [2023-12-15 20:20:11,049 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:20:11,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390796337] [2023-12-15 20:20:11,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390796337] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:20:11,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:20:11,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-15 20:20:11,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257391376] [2023-12-15 20:20:11,050 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:20:11,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 20:20:11,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:20:11,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 20:20:11,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-12-15 20:20:11,051 INFO L87 Difference]: Start difference. First operand 112 states and 179 transitions. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 3 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2023-12-15 20:20:11,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:20:11,416 INFO L93 Difference]: Finished difference Result 275 states and 427 transitions. [2023-12-15 20:20:11,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 20:20:11,416 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 3 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) Word has length 199 [2023-12-15 20:20:11,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:20:11,418 INFO L225 Difference]: With dead ends: 275 [2023-12-15 20:20:11,418 INFO L226 Difference]: Without dead ends: 164 [2023-12-15 20:20:11,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2023-12-15 20:20:11,419 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 226 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:20:11,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 501 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 20:20:11,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-12-15 20:20:11,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 157. [2023-12-15 20:20:11,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 110 states have (on average 1.4272727272727272) internal successors, (157), 111 states have internal predecessors, (157), 41 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-15 20:20:11,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 239 transitions. [2023-12-15 20:20:11,432 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 239 transitions. Word has length 199 [2023-12-15 20:20:11,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:20:11,432 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 239 transitions. [2023-12-15 20:20:11,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 3 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2023-12-15 20:20:11,432 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 239 transitions. [2023-12-15 20:20:11,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-15 20:20:11,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:20:11,434 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:20:11,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 20:20:11,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:20:11,647 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:20:11,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:20:11,647 INFO L85 PathProgramCache]: Analyzing trace with hash 448795361, now seen corresponding path program 1 times [2023-12-15 20:20:11,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:20:11,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282417996] [2023-12-15 20:20:11,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:11,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:20:11,669 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:20:11,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1906031662] [2023-12-15 20:20:11,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:11,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:20:11,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:20:11,690 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) [2023-12-15 20:20:11,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 20:20:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:20:11,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 20:20:11,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:20:12,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 800 proven. 147 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2023-12-15 20:20:12,227 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:20:12,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 27 proven. 150 refuted. 0 times theorem prover too weak. 1683 trivial. 0 not checked. [2023-12-15 20:20:12,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:20:12,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282417996] [2023-12-15 20:20:12,576 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:20:12,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906031662] [2023-12-15 20:20:12,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906031662] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:20:12,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:20:12,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-15 20:20:12,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704796396] [2023-12-15 20:20:12,576 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:20:12,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-15 20:20:12,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:20:12,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-15 20:20:12,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-12-15 20:20:12,578 INFO L87 Difference]: Start difference. First operand 157 states and 239 transitions. Second operand has 16 states, 16 states have (on average 6.3125) internal successors, (101), 16 states have internal predecessors, (101), 5 states have call successors, (61), 3 states have call predecessors, (61), 7 states have return successors, (62), 4 states have call predecessors, (62), 5 states have call successors, (62) [2023-12-15 20:20:13,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:20:13,150 INFO L93 Difference]: Finished difference Result 380 states and 566 transitions. [2023-12-15 20:20:13,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-15 20:20:13,151 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.3125) internal successors, (101), 16 states have internal predecessors, (101), 5 states have call successors, (61), 3 states have call predecessors, (61), 7 states have return successors, (62), 4 states have call predecessors, (62), 5 states have call successors, (62) Word has length 199 [2023-12-15 20:20:13,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:20:13,152 INFO L225 Difference]: With dead ends: 380 [2023-12-15 20:20:13,152 INFO L226 Difference]: Without dead ends: 224 [2023-12-15 20:20:13,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=340, Invalid=782, Unknown=0, NotChecked=0, Total=1122 [2023-12-15 20:20:13,153 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 613 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 20:20:13,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 550 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 20:20:13,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-12-15 20:20:13,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 136. [2023-12-15 20:20:13,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 100 states have (on average 1.48) internal successors, (148), 100 states have internal predecessors, (148), 31 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-15 20:20:13,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 210 transitions. [2023-12-15 20:20:13,164 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 210 transitions. Word has length 199 [2023-12-15 20:20:13,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:20:13,164 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 210 transitions. [2023-12-15 20:20:13,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.3125) internal successors, (101), 16 states have internal predecessors, (101), 5 states have call successors, (61), 3 states have call predecessors, (61), 7 states have return successors, (62), 4 states have call predecessors, (62), 5 states have call successors, (62) [2023-12-15 20:20:13,165 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 210 transitions. [2023-12-15 20:20:13,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-15 20:20:13,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:20:13,166 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:20:13,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 20:20:13,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:20:13,372 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:20:13,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:20:13,373 INFO L85 PathProgramCache]: Analyzing trace with hash 2035668066, now seen corresponding path program 1 times [2023-12-15 20:20:13,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:20:13,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170558894] [2023-12-15 20:20:13,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:13,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:20:13,392 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:20:13,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1996772390] [2023-12-15 20:20:13,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:13,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:20:13,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:20:13,401 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) [2023-12-15 20:20:13,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 20:20:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:20:13,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 20:20:13,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:20:13,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-15 20:20:13,560 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:20:13,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:20:13,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170558894] [2023-12-15 20:20:13,560 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:20:13,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996772390] [2023-12-15 20:20:13,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996772390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:20:13,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:20:13,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 20:20:13,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641118007] [2023-12-15 20:20:13,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:20:13,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 20:20:13,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:20:13,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 20:20:13,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:20:13,562 INFO L87 Difference]: Start difference. First operand 136 states and 210 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-15 20:20:13,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:20:13,617 INFO L93 Difference]: Finished difference Result 318 states and 485 transitions. [2023-12-15 20:20:13,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 20:20:13,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 199 [2023-12-15 20:20:13,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:20:13,619 INFO L225 Difference]: With dead ends: 318 [2023-12-15 20:20:13,619 INFO L226 Difference]: Without dead ends: 183 [2023-12-15 20:20:13,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:20:13,620 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 110 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:20:13,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 378 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:20:13,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-12-15 20:20:13,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 180. [2023-12-15 20:20:13,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 138 states have (on average 1.4420289855072463) internal successors, (199), 139 states have internal predecessors, (199), 35 states have call successors, (35), 6 states have call predecessors, (35), 6 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-15 20:20:13,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 269 transitions. [2023-12-15 20:20:13,630 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 269 transitions. Word has length 199 [2023-12-15 20:20:13,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:20:13,631 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 269 transitions. [2023-12-15 20:20:13,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-15 20:20:13,631 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 269 transitions. [2023-12-15 20:20:13,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-15 20:20:13,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:20:13,633 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:20:13,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-15 20:20:13,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:20:13,839 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:20:13,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:20:13,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1448862052, now seen corresponding path program 1 times [2023-12-15 20:20:13,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:20:13,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534964423] [2023-12-15 20:20:13,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:13,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:20:13,867 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:20:13,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1675791164] [2023-12-15 20:20:13,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:13,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:20:13,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:20:13,892 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) [2023-12-15 20:20:13,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 20:20:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:20:14,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 20:20:14,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:20:14,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 750 proven. 66 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2023-12-15 20:20:14,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:20:14,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 24 proven. 66 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2023-12-15 20:20:14,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:20:14,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534964423] [2023-12-15 20:20:14,446 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:20:14,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675791164] [2023-12-15 20:20:14,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675791164] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:20:14,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:20:14,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-15 20:20:14,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975863098] [2023-12-15 20:20:14,447 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:20:14,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 20:20:14,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:20:14,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 20:20:14,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-12-15 20:20:14,449 INFO L87 Difference]: Start difference. First operand 180 states and 269 transitions. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 3 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2023-12-15 20:20:14,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:20:14,853 INFO L93 Difference]: Finished difference Result 500 states and 740 transitions. [2023-12-15 20:20:14,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 20:20:14,854 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 3 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 199 [2023-12-15 20:20:14,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:20:14,856 INFO L225 Difference]: With dead ends: 500 [2023-12-15 20:20:14,856 INFO L226 Difference]: Without dead ends: 321 [2023-12-15 20:20:14,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2023-12-15 20:20:14,858 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 257 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:20:14,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 768 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 20:20:14,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-12-15 20:20:14,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 215. [2023-12-15 20:20:14,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 158 states have (on average 1.3670886075949367) internal successors, (216), 160 states have internal predecessors, (216), 45 states have call successors, (45), 11 states have call predecessors, (45), 11 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-15 20:20:14,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 306 transitions. [2023-12-15 20:20:14,875 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 306 transitions. Word has length 199 [2023-12-15 20:20:14,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:20:14,878 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 306 transitions. [2023-12-15 20:20:14,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 3 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2023-12-15 20:20:14,878 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 306 transitions. [2023-12-15 20:20:14,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-15 20:20:14,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:20:14,880 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:20:14,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-15 20:20:15,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:20:15,093 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:20:15,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:20:15,093 INFO L85 PathProgramCache]: Analyzing trace with hash -687813477, now seen corresponding path program 1 times [2023-12-15 20:20:15,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:20:15,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793399874] [2023-12-15 20:20:15,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:15,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:20:15,109 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:20:15,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [401506254] [2023-12-15 20:20:15,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:15,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:20:15,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:20:15,110 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) [2023-12-15 20:20:15,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 20:20:15,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:20:15,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 20:20:15,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:20:15,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 1279 proven. 60 refuted. 0 times theorem prover too weak. 521 trivial. 0 not checked. [2023-12-15 20:20:15,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:20:15,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 114 proven. 63 refuted. 0 times theorem prover too weak. 1683 trivial. 0 not checked. [2023-12-15 20:20:15,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:20:15,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793399874] [2023-12-15 20:20:15,784 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:20:15,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401506254] [2023-12-15 20:20:15,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401506254] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:20:15,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:20:15,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-15 20:20:15,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638456533] [2023-12-15 20:20:15,785 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:20:15,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-15 20:20:15,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:20:15,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-15 20:20:15,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2023-12-15 20:20:15,786 INFO L87 Difference]: Start difference. First operand 215 states and 306 transitions. Second operand has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 7 states have call successors, (47), 4 states have call predecessors, (47), 8 states have return successors, (48), 7 states have call predecessors, (48), 7 states have call successors, (48) [2023-12-15 20:20:16,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:20:16,121 INFO L93 Difference]: Finished difference Result 422 states and 594 transitions. [2023-12-15 20:20:16,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-15 20:20:16,125 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 7 states have call successors, (47), 4 states have call predecessors, (47), 8 states have return successors, (48), 7 states have call predecessors, (48), 7 states have call successors, (48) Word has length 200 [2023-12-15 20:20:16,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:20:16,126 INFO L225 Difference]: With dead ends: 422 [2023-12-15 20:20:16,126 INFO L226 Difference]: Without dead ends: 239 [2023-12-15 20:20:16,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=244, Invalid=458, Unknown=0, NotChecked=0, Total=702 [2023-12-15 20:20:16,128 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 341 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 20:20:16,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 367 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 20:20:16,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-12-15 20:20:16,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 231. [2023-12-15 20:20:16,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 170 states have (on average 1.3235294117647058) internal successors, (225), 172 states have internal predecessors, (225), 45 states have call successors, (45), 15 states have call predecessors, (45), 15 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-15 20:20:16,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 315 transitions. [2023-12-15 20:20:16,142 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 315 transitions. Word has length 200 [2023-12-15 20:20:16,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:20:16,143 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 315 transitions. [2023-12-15 20:20:16,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 7 states have call successors, (47), 4 states have call predecessors, (47), 8 states have return successors, (48), 7 states have call predecessors, (48), 7 states have call successors, (48) [2023-12-15 20:20:16,143 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 315 transitions. [2023-12-15 20:20:16,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-15 20:20:16,144 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:20:16,144 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:20:16,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 20:20:16,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:20:16,351 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:20:16,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:20:16,351 INFO L85 PathProgramCache]: Analyzing trace with hash 129834973, now seen corresponding path program 1 times [2023-12-15 20:20:16,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:20:16,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918860903] [2023-12-15 20:20:16,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:16,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:20:16,368 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:20:16,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1548629875] [2023-12-15 20:20:16,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:16,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:20:16,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:20:16,394 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) [2023-12-15 20:20:16,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 20:20:16,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:20:16,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-15 20:20:16,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:20:17,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 902 proven. 213 refuted. 0 times theorem prover too weak. 745 trivial. 0 not checked. [2023-12-15 20:20:17,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:20:18,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 39 proven. 222 refuted. 0 times theorem prover too weak. 1599 trivial. 0 not checked. [2023-12-15 20:20:18,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:20:18,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918860903] [2023-12-15 20:20:18,005 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:20:18,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548629875] [2023-12-15 20:20:18,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548629875] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:20:18,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:20:18,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 30 [2023-12-15 20:20:18,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782705759] [2023-12-15 20:20:18,006 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:20:18,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-15 20:20:18,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:20:18,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-15 20:20:18,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=670, Unknown=0, NotChecked=0, Total=870 [2023-12-15 20:20:18,007 INFO L87 Difference]: Start difference. First operand 231 states and 315 transitions. Second operand has 30 states, 28 states have (on average 3.7857142857142856) internal successors, (106), 28 states have internal predecessors, (106), 8 states have call successors, (62), 5 states have call predecessors, (62), 9 states have return successors, (62), 6 states have call predecessors, (62), 8 states have call successors, (62) [2023-12-15 20:20:20,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:20:20,325 INFO L93 Difference]: Finished difference Result 882 states and 1207 transitions. [2023-12-15 20:20:20,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-15 20:20:20,326 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 3.7857142857142856) internal successors, (106), 28 states have internal predecessors, (106), 8 states have call successors, (62), 5 states have call predecessors, (62), 9 states have return successors, (62), 6 states have call predecessors, (62), 8 states have call successors, (62) Word has length 200 [2023-12-15 20:20:20,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:20:20,328 INFO L225 Difference]: With dead ends: 882 [2023-12-15 20:20:20,329 INFO L226 Difference]: Without dead ends: 683 [2023-12-15 20:20:20,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1489 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1365, Invalid=3747, Unknown=0, NotChecked=0, Total=5112 [2023-12-15 20:20:20,331 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 1625 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1625 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 2061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 20:20:20,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1625 Valid, 930 Invalid, 2061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 1454 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 20:20:20,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2023-12-15 20:20:20,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 360. [2023-12-15 20:20:20,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 253 states have (on average 1.256916996047431) internal successors, (318), 255 states have internal predecessors, (318), 76 states have call successors, (76), 30 states have call predecessors, (76), 30 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-15 20:20:20,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 470 transitions. [2023-12-15 20:20:20,386 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 470 transitions. Word has length 200 [2023-12-15 20:20:20,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:20:20,387 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 470 transitions. [2023-12-15 20:20:20,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 3.7857142857142856) internal successors, (106), 28 states have internal predecessors, (106), 8 states have call successors, (62), 5 states have call predecessors, (62), 9 states have return successors, (62), 6 states have call predecessors, (62), 8 states have call successors, (62) [2023-12-15 20:20:20,387 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 470 transitions. [2023-12-15 20:20:20,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-15 20:20:20,388 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:20:20,388 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:20:20,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 20:20:20,594 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,SelfDestructingSolverStorable7 [2023-12-15 20:20:20,595 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:20:20,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:20:20,595 INFO L85 PathProgramCache]: Analyzing trace with hash 552536799, now seen corresponding path program 1 times [2023-12-15 20:20:20,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:20:20,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59087837] [2023-12-15 20:20:20,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:20,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:20:20,614 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:20:20,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1468573892] [2023-12-15 20:20:20,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:20,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:20:20,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:20:20,616 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) [2023-12-15 20:20:20,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 20:20:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:20:20,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-15 20:20:20,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:20:24,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 62 proven. 174 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-12-15 20:20:24,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:20:28,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-15 20:20:28,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:20:28,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59087837] [2023-12-15 20:20:28,171 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:20:28,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468573892] [2023-12-15 20:20:28,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468573892] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 20:20:28,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 20:20:28,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 27 [2023-12-15 20:20:28,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424142386] [2023-12-15 20:20:28,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:20:28,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 20:20:28,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:20:28,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 20:20:28,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2023-12-15 20:20:28,176 INFO L87 Difference]: Start difference. First operand 360 states and 470 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-15 20:20:30,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:20:30,979 INFO L93 Difference]: Finished difference Result 886 states and 1184 transitions. [2023-12-15 20:20:30,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-15 20:20:30,980 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 200 [2023-12-15 20:20:30,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:20:30,982 INFO L225 Difference]: With dead ends: 886 [2023-12-15 20:20:30,982 INFO L226 Difference]: Without dead ends: 642 [2023-12-15 20:20:30,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=557, Invalid=2095, Unknown=0, NotChecked=0, Total=2652 [2023-12-15 20:20:30,984 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 532 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 20:20:30,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 1012 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 20:20:30,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2023-12-15 20:20:31,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 382. [2023-12-15 20:20:31,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 275 states have (on average 1.2654545454545454) internal successors, (348), 277 states have internal predecessors, (348), 76 states have call successors, (76), 30 states have call predecessors, (76), 30 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-15 20:20:31,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 500 transitions. [2023-12-15 20:20:31,040 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 500 transitions. Word has length 200 [2023-12-15 20:20:31,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:20:31,040 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 500 transitions. [2023-12-15 20:20:31,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-15 20:20:31,041 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 500 transitions. [2023-12-15 20:20:31,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-15 20:20:31,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:20:31,042 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:20:31,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-15 20:20:31,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:20:31,248 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:20:31,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:20:31,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1035811103, now seen corresponding path program 1 times [2023-12-15 20:20:31,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:20:31,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583728606] [2023-12-15 20:20:31,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:31,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:20:31,281 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:20:31,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339357815] [2023-12-15 20:20:31,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:31,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:20:31,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:20:31,282 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) [2023-12-15 20:20:31,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 20:20:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:20:31,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-15 20:20:31,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:20:34,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 859 proven. 108 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2023-12-15 20:20:34,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:20:38,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-15 20:20:38,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:20:38,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583728606] [2023-12-15 20:20:38,906 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:20:38,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339357815] [2023-12-15 20:20:38,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339357815] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 20:20:38,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 20:20:38,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [19] total 29 [2023-12-15 20:20:38,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584116365] [2023-12-15 20:20:38,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:20:38,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 20:20:38,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:20:38,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 20:20:38,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=619, Unknown=0, NotChecked=0, Total=812 [2023-12-15 20:20:38,907 INFO L87 Difference]: Start difference. First operand 382 states and 500 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-15 20:20:42,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:20:42,463 INFO L93 Difference]: Finished difference Result 917 states and 1226 transitions. [2023-12-15 20:20:42,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-15 20:20:42,464 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 200 [2023-12-15 20:20:42,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:20:42,467 INFO L225 Difference]: With dead ends: 917 [2023-12-15 20:20:42,467 INFO L226 Difference]: Without dead ends: 651 [2023-12-15 20:20:42,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=608, Invalid=2254, Unknown=0, NotChecked=0, Total=2862 [2023-12-15 20:20:42,468 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 775 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 20:20:42,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 806 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 20:20:42,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2023-12-15 20:20:42,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 390. [2023-12-15 20:20:42,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 283 states have (on average 1.2756183745583038) internal successors, (361), 285 states have internal predecessors, (361), 76 states have call successors, (76), 30 states have call predecessors, (76), 30 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-15 20:20:42,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 513 transitions. [2023-12-15 20:20:42,509 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 513 transitions. Word has length 200 [2023-12-15 20:20:42,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:20:42,510 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 513 transitions. [2023-12-15 20:20:42,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-15 20:20:42,510 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 513 transitions. [2023-12-15 20:20:42,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-15 20:20:42,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:20:42,511 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:20:42,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-15 20:20:42,739 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,SelfDestructingSolverStorable9 [2023-12-15 20:20:42,739 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:20:42,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:20:42,740 INFO L85 PathProgramCache]: Analyzing trace with hash -355752733, now seen corresponding path program 1 times [2023-12-15 20:20:42,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:20:42,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990603296] [2023-12-15 20:20:42,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:42,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:20:42,765 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:20:42,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1789870697] [2023-12-15 20:20:42,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:42,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:20:42,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:20:42,790 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) [2023-12-15 20:20:42,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 20:20:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:20:42,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 20:20:42,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:20:43,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 776 proven. 111 refuted. 0 times theorem prover too weak. 973 trivial. 0 not checked. [2023-12-15 20:20:43,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:20:43,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 63 proven. 114 refuted. 0 times theorem prover too weak. 1683 trivial. 0 not checked. [2023-12-15 20:20:43,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:20:43,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990603296] [2023-12-15 20:20:43,497 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:20:43,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789870697] [2023-12-15 20:20:43,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789870697] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:20:43,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:20:43,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-12-15 20:20:43,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428264310] [2023-12-15 20:20:43,498 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:20:43,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-15 20:20:43,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:20:43,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-15 20:20:43,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2023-12-15 20:20:43,499 INFO L87 Difference]: Start difference. First operand 390 states and 513 transitions. Second operand has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 18 states have internal predecessors, (101), 5 states have call successors, (61), 3 states have call predecessors, (61), 7 states have return successors, (62), 4 states have call predecessors, (62), 5 states have call successors, (62) [2023-12-15 20:20:43,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:20:43,875 INFO L93 Difference]: Finished difference Result 687 states and 907 transitions. [2023-12-15 20:20:43,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 20:20:43,875 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 18 states have internal predecessors, (101), 5 states have call successors, (61), 3 states have call predecessors, (61), 7 states have return successors, (62), 4 states have call predecessors, (62), 5 states have call successors, (62) Word has length 200 [2023-12-15 20:20:43,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:20:43,877 INFO L225 Difference]: With dead ends: 687 [2023-12-15 20:20:43,877 INFO L226 Difference]: Without dead ends: 413 [2023-12-15 20:20:43,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2023-12-15 20:20:43,878 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 154 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:20:43,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 413 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 20:20:43,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2023-12-15 20:20:43,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 393. [2023-12-15 20:20:43,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 284 states have (on average 1.2535211267605635) internal successors, (356), 286 states have internal predecessors, (356), 76 states have call successors, (76), 32 states have call predecessors, (76), 32 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-15 20:20:43,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 508 transitions. [2023-12-15 20:20:43,938 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 508 transitions. Word has length 200 [2023-12-15 20:20:43,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:20:43,938 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 508 transitions. [2023-12-15 20:20:43,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 18 states have internal predecessors, (101), 5 states have call successors, (61), 3 states have call predecessors, (61), 7 states have return successors, (62), 4 states have call predecessors, (62), 5 states have call successors, (62) [2023-12-15 20:20:43,939 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 508 transitions. [2023-12-15 20:20:43,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-15 20:20:43,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:20:43,940 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:20:43,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 20:20:44,145 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,SelfDestructingSolverStorable10 [2023-12-15 20:20:44,145 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:20:44,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:20:44,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1441607907, now seen corresponding path program 1 times [2023-12-15 20:20:44,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:20:44,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234659364] [2023-12-15 20:20:44,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:44,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:20:44,165 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:20:44,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709826478] [2023-12-15 20:20:44,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:44,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:20:44,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:20:44,167 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) [2023-12-15 20:20:44,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 20:20:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:20:44,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 20:20:44,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:20:47,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-15 20:20:47,584 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:20:47,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:20:47,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234659364] [2023-12-15 20:20:47,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:20:47,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709826478] [2023-12-15 20:20:47,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709826478] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:20:47,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:20:47,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-15 20:20:47,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513136748] [2023-12-15 20:20:47,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:20:47,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 20:20:47,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:20:47,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 20:20:47,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2023-12-15 20:20:47,586 INFO L87 Difference]: Start difference. First operand 393 states and 508 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-15 20:20:48,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:20:48,692 INFO L93 Difference]: Finished difference Result 862 states and 1140 transitions. [2023-12-15 20:20:48,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-15 20:20:48,708 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 200 [2023-12-15 20:20:48,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:20:48,710 INFO L225 Difference]: With dead ends: 862 [2023-12-15 20:20:48,711 INFO L226 Difference]: Without dead ends: 589 [2023-12-15 20:20:48,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=201, Invalid=449, Unknown=0, NotChecked=0, Total=650 [2023-12-15 20:20:48,712 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 351 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 20:20:48,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 804 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 20:20:48,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2023-12-15 20:20:48,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 417. [2023-12-15 20:20:48,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 308 states have (on average 1.2629870129870129) internal successors, (389), 310 states have internal predecessors, (389), 76 states have call successors, (76), 32 states have call predecessors, (76), 32 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-15 20:20:48,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 541 transitions. [2023-12-15 20:20:48,760 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 541 transitions. Word has length 200 [2023-12-15 20:20:48,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:20:48,760 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 541 transitions. [2023-12-15 20:20:48,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-15 20:20:48,760 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 541 transitions. [2023-12-15 20:20:48,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-15 20:20:48,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:20:48,762 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:20:48,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-15 20:20:48,967 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,SelfDestructingSolverStorable11 [2023-12-15 20:20:48,967 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:20:48,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:20:48,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1265011487, now seen corresponding path program 1 times [2023-12-15 20:20:48,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:20:48,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909476159] [2023-12-15 20:20:48,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:48,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:20:48,994 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:20:48,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1366527967] [2023-12-15 20:20:48,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:48,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:20:48,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:20:49,008 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) [2023-12-15 20:20:49,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 20:20:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:20:49,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-15 20:20:49,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:20:52,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-15 20:20:52,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:20:52,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:20:52,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909476159] [2023-12-15 20:20:52,263 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:20:52,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366527967] [2023-12-15 20:20:52,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366527967] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:20:52,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:20:52,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-15 20:20:52,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684187370] [2023-12-15 20:20:52,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:20:52,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 20:20:52,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:20:52,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 20:20:52,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2023-12-15 20:20:52,265 INFO L87 Difference]: Start difference. First operand 417 states and 541 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-15 20:20:53,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:20:53,322 INFO L93 Difference]: Finished difference Result 904 states and 1196 transitions. [2023-12-15 20:20:53,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-15 20:20:53,323 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 200 [2023-12-15 20:20:53,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:20:53,325 INFO L225 Difference]: With dead ends: 904 [2023-12-15 20:20:53,325 INFO L226 Difference]: Without dead ends: 607 [2023-12-15 20:20:53,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=201, Invalid=449, Unknown=0, NotChecked=0, Total=650 [2023-12-15 20:20:53,326 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 410 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 20:20:53,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 861 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 20:20:53,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2023-12-15 20:20:53,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 417. [2023-12-15 20:20:53,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 308 states have (on average 1.2629870129870129) internal successors, (389), 310 states have internal predecessors, (389), 76 states have call successors, (76), 32 states have call predecessors, (76), 32 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-15 20:20:53,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 541 transitions. [2023-12-15 20:20:53,365 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 541 transitions. Word has length 200 [2023-12-15 20:20:53,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:20:53,365 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 541 transitions. [2023-12-15 20:20:53,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-15 20:20:53,365 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 541 transitions. [2023-12-15 20:20:53,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-12-15 20:20:53,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:20:53,366 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:20:53,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 20:20:53,572 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,SelfDestructingSolverStorable12 [2023-12-15 20:20:53,572 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:20:53,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:20:53,572 INFO L85 PathProgramCache]: Analyzing trace with hash 174237117, now seen corresponding path program 1 times [2023-12-15 20:20:53,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:20:53,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009299703] [2023-12-15 20:20:53,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:53,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:20:53,586 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:20:53,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [599706558] [2023-12-15 20:20:53,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:53,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:20:53,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:20:53,587 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) [2023-12-15 20:20:53,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 20:20:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:20:53,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:20:53,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:20:53,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-15 20:20:53,746 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:20:53,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:20:53,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009299703] [2023-12-15 20:20:53,746 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:20:53,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599706558] [2023-12-15 20:20:53,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599706558] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:20:53,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:20:53,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:20:53,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080259456] [2023-12-15 20:20:53,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:20:53,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:20:53,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:20:53,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:20:53,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:20:53,747 INFO L87 Difference]: Start difference. First operand 417 states and 541 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-15 20:20:53,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:20:53,804 INFO L93 Difference]: Finished difference Result 730 states and 955 transitions. [2023-12-15 20:20:53,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:20:53,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 201 [2023-12-15 20:20:53,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:20:53,805 INFO L225 Difference]: With dead ends: 730 [2023-12-15 20:20:53,805 INFO L226 Difference]: Without dead ends: 433 [2023-12-15 20:20:53,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:20:53,806 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 46 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:20:53,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 298 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:20:53,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-12-15 20:20:53,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 373. [2023-12-15 20:20:53,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 283 states have (on average 1.2826855123674912) internal successors, (363), 283 states have internal predecessors, (363), 62 states have call successors, (62), 27 states have call predecessors, (62), 27 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-15 20:20:53,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 487 transitions. [2023-12-15 20:20:53,837 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 487 transitions. Word has length 201 [2023-12-15 20:20:53,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:20:53,838 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 487 transitions. [2023-12-15 20:20:53,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-15 20:20:53,838 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 487 transitions. [2023-12-15 20:20:53,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-12-15 20:20:53,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:20:53,839 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:20:53,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-15 20:20:54,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:20:54,044 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:20:54,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:20:54,044 INFO L85 PathProgramCache]: Analyzing trace with hash 231495419, now seen corresponding path program 1 times [2023-12-15 20:20:54,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:20:54,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332951792] [2023-12-15 20:20:54,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:54,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:20:54,063 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:20:54,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [908044165] [2023-12-15 20:20:54,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:54,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:20:54,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:20:54,065 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) [2023-12-15 20:20:54,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 20:20:54,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:20:54,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 67 conjunts are in the unsatisfiable core [2023-12-15 20:20:54,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-15 20:21:16,801 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 [2023-12-15 20:21:16,806 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 20:21:16,891 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 20:21:16,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-15 20:21:17,091 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,SelfDestructingSolverStorable14 [2023-12-15 20:21:17,092 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 202 with TraceHistMax 31,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-19-2-2-1 context. [2023-12-15 20:21:17,095 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:21:17,097 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 20:21:17,098 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 08:21:17 BoogieIcfgContainer [2023-12-15 20:21:17,098 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 20:21:17,098 INFO L158 Benchmark]: Toolchain (without parser) took 69873.33ms. Allocated memory was 210.8MB in the beginning and 910.2MB in the end (delta: 699.4MB). Free memory was 176.7MB in the beginning and 792.6MB in the end (delta: -615.9MB). Peak memory consumption was 547.0MB. Max. memory is 8.0GB. [2023-12-15 20:21:17,101 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 210.8MB. Free memory is still 168.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 20:21:17,101 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.49ms. Allocated memory is still 210.8MB. Free memory was 176.7MB in the beginning and 160.3MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-15 20:21:17,101 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.81ms. Allocated memory is still 210.8MB. Free memory was 160.3MB in the beginning and 154.7MB in the end (delta: 5.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 20:21:17,101 INFO L158 Benchmark]: Boogie Preprocessor took 67.17ms. Allocated memory is still 210.8MB. Free memory was 154.7MB in the beginning and 147.7MB in the end (delta: 6.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-15 20:21:17,101 INFO L158 Benchmark]: RCFGBuilder took 446.50ms. Allocated memory was 210.8MB in the beginning and 303.0MB in the end (delta: 92.3MB). Free memory was 147.7MB in the beginning and 276.4MB in the end (delta: -128.6MB). Peak memory consumption was 38.5MB. Max. memory is 8.0GB. [2023-12-15 20:21:17,102 INFO L158 Benchmark]: TraceAbstraction took 68990.32ms. Allocated memory was 303.0MB in the beginning and 910.2MB in the end (delta: 607.1MB). Free memory was 275.8MB in the beginning and 792.6MB in the end (delta: -516.8MB). Peak memory consumption was 552.5MB. Max. memory is 8.0GB. [2023-12-15 20:21:17,102 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 210.8MB. Free memory is still 168.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 299.49ms. Allocated memory is still 210.8MB. Free memory was 176.7MB in the beginning and 160.3MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 62.81ms. Allocated memory is still 210.8MB. Free memory was 160.3MB in the beginning and 154.7MB in the end (delta: 5.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 67.17ms. Allocated memory is still 210.8MB. Free memory was 154.7MB in the beginning and 147.7MB in the end (delta: 6.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * RCFGBuilder took 446.50ms. Allocated memory was 210.8MB in the beginning and 303.0MB in the end (delta: 92.3MB). Free memory was 147.7MB in the beginning and 276.4MB in the end (delta: -128.6MB). Peak memory consumption was 38.5MB. Max. memory is 8.0GB. * TraceAbstraction took 68990.32ms. Allocated memory was 303.0MB in the beginning and 910.2MB in the end (delta: 607.1MB). Free memory was 275.8MB in the beginning and 792.6MB in the end (delta: -516.8MB). Peak memory consumption was 552.5MB. 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: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 202 with TraceHistMax 31,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-19-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 96 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 69.0s, OverallIterations: 15, TraceHistogramMax: 31, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 13.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5744 SdHoareTripleChecker+Valid, 6.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5694 mSDsluCounter, 8433 SdHoareTripleChecker+Invalid, 5.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6502 mSDsCounter, 1345 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7842 IncrementalHoareTripleChecker+Invalid, 9187 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1345 mSolverCounterUnsat, 1931 mSDtfsCounter, 7842 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4774 GetRequests, 4405 SyntacticMatches, 0 SemanticMatches, 369 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3942 ImplicationChecksByTransitivity, 10.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=417occurred in iteration=12, InterpolantAutomatonStates: 274, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 1658 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 26.0s InterpolantComputationTime, 2991 NumberOfCodeBlocks, 2991 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 4565 ConstructedInterpolants, 0 QuantifiedInterpolants, 33163 SizeOfPredicates, 164 NumberOfNonLiveVariables, 6706 ConjunctsInSsa, 184 ConjunctsInUnsatCore, 23 InterpolantComputations, 7 PerfectInterpolantSequences, 40986/42780 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