/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_fillercodesize_ps-cn-500_file-17.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:56:56,330 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:56:56,374 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 19:56:56,377 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:56:56,377 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:56:56,391 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:56:56,391 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:56:56,391 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:56:56,392 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:56:56,392 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:56:56,392 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:56:56,392 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:56:56,393 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:56:56,393 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:56:56,393 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:56:56,394 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:56:56,394 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:56:56,394 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:56:56,394 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:56:56,395 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:56:56,395 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:56:56,395 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:56:56,395 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:56:56,396 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:56:56,396 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:56:56,396 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:56:56,396 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:56:56,396 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:56:56,397 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:56:56,397 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:56:56,397 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:56:56,397 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:56:56,397 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:56:56,398 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:56:56,398 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:56:56,398 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:56:56,398 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:56:56,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:56:56,398 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:56:56,399 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:56:56,399 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:56:56,399 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:56:56,399 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:56:56,399 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:56:56,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:56:56,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:56:56,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:56:56,546 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:56:56,547 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:56:56,547 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-17.i [2023-12-15 19:56:57,512 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:56:57,715 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:56:57,716 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-17.i [2023-12-15 19:56:57,733 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a27c0e299/7d89ef2224494681b92e6cabad575012/FLAGc53fd2c8f [2023-12-15 19:56:57,743 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a27c0e299/7d89ef2224494681b92e6cabad575012 [2023-12-15 19:56:57,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:56:57,746 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:56:57,747 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:56:57,747 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:56:57,750 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:56:57,750 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:56:57" (1/1) ... [2023-12-15 19:56:57,751 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40215812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:56:57, skipping insertion in model container [2023-12-15 19:56:57,751 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:56:57" (1/1) ... [2023-12-15 19:56:57,783 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:56:57,880 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_fillercodesize_ps-cn-500_file-17.i[916,929] [2023-12-15 19:56:58,001 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:56:58,013 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:56:58,021 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_fillercodesize_ps-cn-500_file-17.i[916,929] [2023-12-15 19:56:58,097 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:56:58,114 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:56:58,116 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:56:58 WrapperNode [2023-12-15 19:56:58,116 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:56:58,117 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:56:58,117 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:56:58,117 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:56:58,122 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:56:58" (1/1) ... [2023-12-15 19:56:58,138 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:56:58" (1/1) ... [2023-12-15 19:56:58,185 INFO L138 Inliner]: procedures = 26, calls = 108, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 868 [2023-12-15 19:56:58,186 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:56:58,186 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:56:58,186 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:56:58,186 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:56:58,200 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:56:58" (1/1) ... [2023-12-15 19:56:58,200 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:56:58" (1/1) ... [2023-12-15 19:56:58,212 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:56:58" (1/1) ... [2023-12-15 19:56:58,258 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 19:56:58,258 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:56:58" (1/1) ... [2023-12-15 19:56:58,258 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:56:58" (1/1) ... [2023-12-15 19:56:58,281 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:56:58" (1/1) ... [2023-12-15 19:56:58,286 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:56:58" (1/1) ... [2023-12-15 19:56:58,290 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:56:58" (1/1) ... [2023-12-15 19:56:58,312 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:56:58" (1/1) ... [2023-12-15 19:56:58,319 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:56:58,320 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:56:58,320 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:56:58,320 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:56:58,321 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:56:58" (1/1) ... [2023-12-15 19:56:58,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:56:58,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:56:58,369 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 19:56:58,392 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 19:56:58,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:56:58,396 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 19:56:58,397 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 19:56:58,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:56:58,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:56:58,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:56:58,525 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:56:58,526 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:56:59,250 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:56:59,298 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:56:59,299 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:56:59,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:56:59 BoogieIcfgContainer [2023-12-15 19:56:59,299 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:56:59,302 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:56:59,302 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:56:59,304 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:56:59,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:56:57" (1/3) ... [2023-12-15 19:56:59,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66802a36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:56:59, skipping insertion in model container [2023-12-15 19:56:59,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:56:58" (2/3) ... [2023-12-15 19:56:59,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66802a36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:56:59, skipping insertion in model container [2023-12-15 19:56:59,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:56:59" (3/3) ... [2023-12-15 19:56:59,306 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-17.i [2023-12-15 19:56:59,318 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:56:59,319 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:56:59,364 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:56:59,368 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;@244995f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:56:59,369 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:56:59,373 INFO L276 IsEmpty]: Start isEmpty. Operand has 337 states, 239 states have (on average 1.6820083682008369) internal successors, (402), 240 states have internal predecessors, (402), 95 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2023-12-15 19:56:59,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2023-12-15 19:56:59,408 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:56:59,409 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:56:59,409 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:56:59,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:56:59,415 INFO L85 PathProgramCache]: Analyzing trace with hash 907286177, now seen corresponding path program 1 times [2023-12-15 19:56:59,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:56:59,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979954500] [2023-12-15 19:56:59,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:56:59,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:56:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:56:59,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:56:59,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979954500] [2023-12-15 19:56:59,701 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 19:56:59,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554193687] [2023-12-15 19:56:59,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:56:59,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:56:59,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:56:59,705 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 19:56:59,739 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 19:57:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:57:00,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 1423 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 19:57:00,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:57:00,134 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 17672 trivial. 0 not checked. [2023-12-15 19:57:00,134 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:57:00,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554193687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:57:00,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:57:00,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:57:00,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561695030] [2023-12-15 19:57:00,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:57:00,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:57:00,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:57:00,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:57:00,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:57:00,173 INFO L87 Difference]: Start difference. First operand has 337 states, 239 states have (on average 1.6820083682008369) internal successors, (402), 240 states have internal predecessors, (402), 95 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 2 states, 2 states have (on average 74.0) internal successors, (148), 2 states have internal predecessors, (148), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 2 states have call successors, (95) [2023-12-15 19:57:00,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:57:00,234 INFO L93 Difference]: Finished difference Result 671 states and 1277 transitions. [2023-12-15 19:57:00,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:57:00,238 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 74.0) internal successors, (148), 2 states have internal predecessors, (148), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 2 states have call successors, (95) Word has length 618 [2023-12-15 19:57:00,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:57:00,251 INFO L225 Difference]: With dead ends: 671 [2023-12-15 19:57:00,251 INFO L226 Difference]: Without dead ends: 335 [2023-12-15 19:57:00,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 617 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 19:57:00,260 INFO L413 NwaCegarLoop]: 581 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, 581 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 19:57:00,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 581 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:57:00,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2023-12-15 19:57:00,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2023-12-15 19:57:00,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 238 states have (on average 1.6554621848739495) internal successors, (394), 238 states have internal predecessors, (394), 95 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2023-12-15 19:57:00,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 584 transitions. [2023-12-15 19:57:00,338 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 584 transitions. Word has length 618 [2023-12-15 19:57:00,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:57:00,339 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 584 transitions. [2023-12-15 19:57:00,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 74.0) internal successors, (148), 2 states have internal predecessors, (148), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 2 states have call successors, (95) [2023-12-15 19:57:00,339 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 584 transitions. [2023-12-15 19:57:00,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2023-12-15 19:57:00,354 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:57:00,354 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:00,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 19:57:00,561 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 19:57:00,562 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:57:00,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:57:00,563 INFO L85 PathProgramCache]: Analyzing trace with hash 278951583, now seen corresponding path program 1 times [2023-12-15 19:57:00,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:57:00,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656726244] [2023-12-15 19:57:00,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:00,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:57:00,672 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:57:00,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2108429351] [2023-12-15 19:57:00,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:00,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:00,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:57:00,684 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 19:57:00,705 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 19:57:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:57:01,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 1423 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:57:01,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:57:01,123 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-12-15 19:57:01,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:57:01,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:57:01,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656726244] [2023-12-15 19:57:01,123 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:57:01,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108429351] [2023-12-15 19:57:01,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108429351] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:57:01,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:57:01,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 19:57:01,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870645854] [2023-12-15 19:57:01,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:57:01,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:57:01,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:57:01,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:57:01,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:57:01,129 INFO L87 Difference]: Start difference. First operand 335 states and 584 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-15 19:57:01,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:57:01,567 INFO L93 Difference]: Finished difference Result 1071 states and 1852 transitions. [2023-12-15 19:57:01,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 19:57:01,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 618 [2023-12-15 19:57:01,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:57:01,573 INFO L225 Difference]: With dead ends: 1071 [2023-12-15 19:57:01,573 INFO L226 Difference]: Without dead ends: 737 [2023-12-15 19:57:01,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 616 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:57:01,576 INFO L413 NwaCegarLoop]: 859 mSDtfsCounter, 719 mSDsluCounter, 1861 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 2720 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:57:01,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 2720 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:57:01,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2023-12-15 19:57:01,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 539. [2023-12-15 19:57:01,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 419 states have (on average 1.7088305489260143) internal successors, (716), 420 states have internal predecessors, (716), 117 states have call successors, (117), 2 states have call predecessors, (117), 2 states have return successors, (117), 116 states have call predecessors, (117), 117 states have call successors, (117) [2023-12-15 19:57:01,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 950 transitions. [2023-12-15 19:57:01,622 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 950 transitions. Word has length 618 [2023-12-15 19:57:01,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:57:01,623 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 950 transitions. [2023-12-15 19:57:01,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-15 19:57:01,624 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 950 transitions. [2023-12-15 19:57:01,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2023-12-15 19:57:01,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:57:01,628 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:01,638 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 19:57:01,835 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 19:57:01,836 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:57:01,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:57:01,836 INFO L85 PathProgramCache]: Analyzing trace with hash 306017185, now seen corresponding path program 1 times [2023-12-15 19:57:01,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:57:01,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880009361] [2023-12-15 19:57:01,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:01,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:57:01,925 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:57:01,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [227467595] [2023-12-15 19:57:01,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:01,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:01,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:57:01,929 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 19:57:01,964 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 19:57:02,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:57:02,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 1421 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:57:02,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:57:02,303 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-12-15 19:57:02,303 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:57:02,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:57:02,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880009361] [2023-12-15 19:57:02,303 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:57:02,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227467595] [2023-12-15 19:57:02,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227467595] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:57:02,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:57:02,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:57:02,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116059477] [2023-12-15 19:57:02,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:57:02,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:57:02,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:57:02,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:57:02,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:57:02,306 INFO L87 Difference]: Start difference. First operand 539 states and 950 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-15 19:57:02,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:57:02,354 INFO L93 Difference]: Finished difference Result 1610 states and 2838 transitions. [2023-12-15 19:57:02,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:57:02,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 618 [2023-12-15 19:57:02,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:57:02,361 INFO L225 Difference]: With dead ends: 1610 [2023-12-15 19:57:02,362 INFO L226 Difference]: Without dead ends: 1072 [2023-12-15 19:57:02,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 616 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 19:57:02,364 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 559 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:57:02,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 1144 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:57:02,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2023-12-15 19:57:02,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1070. [2023-12-15 19:57:02,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 831 states have (on average 1.7027677496991576) internal successors, (1415), 833 states have internal predecessors, (1415), 234 states have call successors, (234), 4 states have call predecessors, (234), 4 states have return successors, (234), 232 states have call predecessors, (234), 234 states have call successors, (234) [2023-12-15 19:57:02,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1883 transitions. [2023-12-15 19:57:02,415 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1883 transitions. Word has length 618 [2023-12-15 19:57:02,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:57:02,416 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 1883 transitions. [2023-12-15 19:57:02,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-15 19:57:02,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1883 transitions. [2023-12-15 19:57:02,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2023-12-15 19:57:02,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:57:02,421 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:02,434 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 19:57:02,634 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 19:57:02,635 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:57:02,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:57:02,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1749882834, now seen corresponding path program 1 times [2023-12-15 19:57:02,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:57:02,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273746411] [2023-12-15 19:57:02,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:02,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:57:02,702 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:57:02,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [478066842] [2023-12-15 19:57:02,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:02,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:02,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:57:02,721 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:57:02,748 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 19:57:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:57:03,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 1424 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:57:03,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:57:03,073 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-12-15 19:57:03,073 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:57:03,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:57:03,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273746411] [2023-12-15 19:57:03,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:57:03,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478066842] [2023-12-15 19:57:03,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478066842] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:57:03,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:57:03,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:57:03,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119389721] [2023-12-15 19:57:03,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:57:03,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:57:03,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:57:03,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:57:03,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:57:03,076 INFO L87 Difference]: Start difference. First operand 1070 states and 1883 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-15 19:57:03,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:57:03,132 INFO L93 Difference]: Finished difference Result 2801 states and 4880 transitions. [2023-12-15 19:57:03,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:57:03,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 619 [2023-12-15 19:57:03,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:57:03,140 INFO L225 Difference]: With dead ends: 2801 [2023-12-15 19:57:03,140 INFO L226 Difference]: Without dead ends: 1732 [2023-12-15 19:57:03,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 617 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 19:57:03,144 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 310 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:57:03,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 1148 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:57:03,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2023-12-15 19:57:03,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1728. [2023-12-15 19:57:03,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1728 states, 1301 states have (on average 1.6533435818601077) internal successors, (2151), 1307 states have internal predecessors, (2151), 418 states have call successors, (418), 8 states have call predecessors, (418), 8 states have return successors, (418), 412 states have call predecessors, (418), 418 states have call successors, (418) [2023-12-15 19:57:03,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 2987 transitions. [2023-12-15 19:57:03,233 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 2987 transitions. Word has length 619 [2023-12-15 19:57:03,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:57:03,233 INFO L495 AbstractCegarLoop]: Abstraction has 1728 states and 2987 transitions. [2023-12-15 19:57:03,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-15 19:57:03,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 2987 transitions. [2023-12-15 19:57:03,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2023-12-15 19:57:03,239 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:57:03,239 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:03,248 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 19:57:03,445 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 19:57:03,446 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:57:03,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:57:03,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1163432240, now seen corresponding path program 1 times [2023-12-15 19:57:03,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:57:03,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400431094] [2023-12-15 19:57:03,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:03,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:57:03,497 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:57:03,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [611993726] [2023-12-15 19:57:03,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:03,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:03,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:57:03,513 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 19:57:03,538 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 19:57:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:57:03,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 1424 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:57:03,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:57:03,910 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-12-15 19:57:03,910 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:57:03,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:57:03,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400431094] [2023-12-15 19:57:03,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:57:03,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611993726] [2023-12-15 19:57:03,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611993726] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:57:03,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:57:03,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:57:03,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138948369] [2023-12-15 19:57:03,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:57:03,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:57:03,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:57:03,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:57:03,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:57:03,913 INFO L87 Difference]: Start difference. First operand 1728 states and 2987 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-15 19:57:04,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:57:04,057 INFO L93 Difference]: Finished difference Result 4796 states and 8311 transitions. [2023-12-15 19:57:04,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:57:04,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 620 [2023-12-15 19:57:04,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:57:04,069 INFO L225 Difference]: With dead ends: 4796 [2023-12-15 19:57:04,070 INFO L226 Difference]: Without dead ends: 3069 [2023-12-15 19:57:04,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 618 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 19:57:04,077 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 351 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:57:04,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1206 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 19:57:04,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states. [2023-12-15 19:57:04,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 3063. [2023-12-15 19:57:04,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3063 states, 2428 states have (on average 1.6647446457990116) internal successors, (4042), 2442 states have internal predecessors, (4042), 618 states have call successors, (618), 16 states have call predecessors, (618), 16 states have return successors, (618), 604 states have call predecessors, (618), 618 states have call successors, (618) [2023-12-15 19:57:04,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3063 states to 3063 states and 5278 transitions. [2023-12-15 19:57:04,252 INFO L78 Accepts]: Start accepts. Automaton has 3063 states and 5278 transitions. Word has length 620 [2023-12-15 19:57:04,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:57:04,253 INFO L495 AbstractCegarLoop]: Abstraction has 3063 states and 5278 transitions. [2023-12-15 19:57:04,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-15 19:57:04,253 INFO L276 IsEmpty]: Start isEmpty. Operand 3063 states and 5278 transitions. [2023-12-15 19:57:04,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2023-12-15 19:57:04,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:57:04,259 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:04,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 19:57:04,470 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 19:57:04,471 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:57:04,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:57:04,471 INFO L85 PathProgramCache]: Analyzing trace with hash 2143008323, now seen corresponding path program 1 times [2023-12-15 19:57:04,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:57:04,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379530472] [2023-12-15 19:57:04,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:04,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:57:04,516 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:57:04,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1995912616] [2023-12-15 19:57:04,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:04,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:04,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:57:04,523 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 19:57:04,548 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 19:57:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:57:04,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 1425 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:57:04,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:57:05,214 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 8952 proven. 153 refuted. 0 times theorem prover too weak. 8755 trivial. 0 not checked. [2023-12-15 19:57:05,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:57:05,507 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 129 proven. 153 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2023-12-15 19:57:05,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:57:05,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379530472] [2023-12-15 19:57:05,508 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:57:05,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995912616] [2023-12-15 19:57:05,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995912616] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:57:05,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:57:05,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 19:57:05,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937835369] [2023-12-15 19:57:05,509 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:57:05,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:57:05,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:57:05,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:57:05,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:57:05,511 INFO L87 Difference]: Start difference. First operand 3063 states and 5278 transitions. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 2 states have call successors, (146), 2 states have call predecessors, (146), 4 states have return successors, (147), 2 states have call predecessors, (147), 2 states have call successors, (147) [2023-12-15 19:57:05,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:57:05,945 INFO L93 Difference]: Finished difference Result 6173 states and 10591 transitions. [2023-12-15 19:57:05,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 19:57:05,945 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 2 states have call successors, (146), 2 states have call predecessors, (146), 4 states have return successors, (147), 2 states have call predecessors, (147), 2 states have call successors, (147) Word has length 621 [2023-12-15 19:57:05,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:57:05,980 INFO L225 Difference]: With dead ends: 6173 [2023-12-15 19:57:05,980 INFO L226 Difference]: Without dead ends: 3111 [2023-12-15 19:57:05,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1244 GetRequests, 1234 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:57:05,985 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 355 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:57:05,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 1195 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:57:05,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3111 states. [2023-12-15 19:57:06,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3111 to 3071. [2023-12-15 19:57:06,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3071 states, 2432 states have (on average 1.6233552631578947) internal successors, (3948), 2446 states have internal predecessors, (3948), 618 states have call successors, (618), 20 states have call predecessors, (618), 20 states have return successors, (618), 604 states have call predecessors, (618), 618 states have call successors, (618) [2023-12-15 19:57:06,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3071 states to 3071 states and 5184 transitions. [2023-12-15 19:57:06,141 INFO L78 Accepts]: Start accepts. Automaton has 3071 states and 5184 transitions. Word has length 621 [2023-12-15 19:57:06,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:57:06,142 INFO L495 AbstractCegarLoop]: Abstraction has 3071 states and 5184 transitions. [2023-12-15 19:57:06,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 2 states have call successors, (146), 2 states have call predecessors, (146), 4 states have return successors, (147), 2 states have call predecessors, (147), 2 states have call successors, (147) [2023-12-15 19:57:06,142 INFO L276 IsEmpty]: Start isEmpty. Operand 3071 states and 5184 transitions. [2023-12-15 19:57:06,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2023-12-15 19:57:06,148 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:57:06,149 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:06,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 19:57:06,355 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 19:57:06,356 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:57:06,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:57:06,356 INFO L85 PathProgramCache]: Analyzing trace with hash -853660855, now seen corresponding path program 1 times [2023-12-15 19:57:06,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:57:06,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141365259] [2023-12-15 19:57:06,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:06,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:57:06,398 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:57:06,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1857759] [2023-12-15 19:57:06,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:06,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:06,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:57:06,400 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 19:57:06,402 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 19:57:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:57:06,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 1426 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-15 19:57:06,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:57:07,896 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-12-15 19:57:07,896 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:57:07,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:57:07,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141365259] [2023-12-15 19:57:07,897 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:57:07,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857759] [2023-12-15 19:57:07,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857759] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:57:07,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:57:07,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 19:57:07,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247149794] [2023-12-15 19:57:07,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:57:07,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 19:57:07,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:57:07,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 19:57:07,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:57:07,899 INFO L87 Difference]: Start difference. First operand 3071 states and 5184 transitions. Second operand has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 5 states have internal predecessors, (149), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-15 19:57:08,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:57:08,367 INFO L93 Difference]: Finished difference Result 9261 states and 15768 transitions. [2023-12-15 19:57:08,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 19:57:08,367 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 5 states have internal predecessors, (149), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 621 [2023-12-15 19:57:08,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:57:08,391 INFO L225 Difference]: With dead ends: 9261 [2023-12-15 19:57:08,395 INFO L226 Difference]: Without dead ends: 6191 [2023-12-15 19:57:08,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 616 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-12-15 19:57:08,404 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 870 mSDsluCounter, 2028 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:57:08,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 2586 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:57:08,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6191 states. [2023-12-15 19:57:08,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6191 to 4785. [2023-12-15 19:57:08,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4785 states, 4048 states have (on average 1.6682312252964426) internal successors, (6753), 4062 states have internal predecessors, (6753), 713 states have call successors, (713), 23 states have call predecessors, (713), 23 states have return successors, (713), 699 states have call predecessors, (713), 713 states have call successors, (713) [2023-12-15 19:57:08,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4785 states to 4785 states and 8179 transitions. [2023-12-15 19:57:08,594 INFO L78 Accepts]: Start accepts. Automaton has 4785 states and 8179 transitions. Word has length 621 [2023-12-15 19:57:08,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:57:08,595 INFO L495 AbstractCegarLoop]: Abstraction has 4785 states and 8179 transitions. [2023-12-15 19:57:08,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 5 states have internal predecessors, (149), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-15 19:57:08,596 INFO L276 IsEmpty]: Start isEmpty. Operand 4785 states and 8179 transitions. [2023-12-15 19:57:08,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2023-12-15 19:57:08,603 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:57:08,603 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:08,612 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 19:57:08,810 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 19:57:08,811 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:57:08,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:57:08,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1370618279, now seen corresponding path program 1 times [2023-12-15 19:57:08,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:57:08,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747070117] [2023-12-15 19:57:08,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:08,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:57:08,852 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:57:08,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1060927846] [2023-12-15 19:57:08,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:08,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:08,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:57:08,856 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 19:57:08,880 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 19:57:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:57:09,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 19:57:09,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:57:10,742 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 10760 proven. 60 refuted. 0 times theorem prover too weak. 7040 trivial. 0 not checked. [2023-12-15 19:57:10,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:57:11,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:57:11,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747070117] [2023-12-15 19:57:11,326 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:57:11,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060927846] [2023-12-15 19:57:11,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060927846] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:57:11,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:57:11,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-12-15 19:57:11,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160087757] [2023-12-15 19:57:11,327 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-15 19:57:11,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 19:57:11,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:57:11,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 19:57:11,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-12-15 19:57:11,329 INFO L87 Difference]: Start difference. First operand 4785 states and 8179 transitions. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 3 states have call successors, (95), 3 states have call predecessors, (95), 4 states have return successors, (95), 3 states have call predecessors, (95), 3 states have call successors, (95) [2023-12-15 19:57:25,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:57:25,218 INFO L93 Difference]: Finished difference Result 23337 states and 39561 transitions. [2023-12-15 19:57:25,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-15 19:57:25,219 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 3 states have call successors, (95), 3 states have call predecessors, (95), 4 states have return successors, (95), 3 states have call predecessors, (95), 3 states have call successors, (95) Word has length 622 [2023-12-15 19:57:25,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:57:25,283 INFO L225 Difference]: With dead ends: 23337 [2023-12-15 19:57:25,283 INFO L226 Difference]: Without dead ends: 19067 [2023-12-15 19:57:25,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 745 GetRequests, 704 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=426, Invalid=1380, Unknown=0, NotChecked=0, Total=1806 [2023-12-15 19:57:25,298 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 2467 mSDsluCounter, 3213 mSDsCounter, 0 mSdLazyCounter, 2786 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2565 SdHoareTripleChecker+Valid, 3804 SdHoareTripleChecker+Invalid, 3148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 2786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:57:25,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2565 Valid, 3804 Invalid, 3148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 2786 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2023-12-15 19:57:25,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19067 states. [2023-12-15 19:57:25,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19067 to 12641. [2023-12-15 19:57:25,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12641 states, 11053 states have (on average 1.670315751379716) internal successors, (18462), 11099 states have internal predecessors, (18462), 1521 states have call successors, (1521), 66 states have call predecessors, (1521), 66 states have return successors, (1521), 1475 states have call predecessors, (1521), 1521 states have call successors, (1521) [2023-12-15 19:57:25,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12641 states to 12641 states and 21504 transitions. [2023-12-15 19:57:25,949 INFO L78 Accepts]: Start accepts. Automaton has 12641 states and 21504 transitions. Word has length 622 [2023-12-15 19:57:25,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:57:25,950 INFO L495 AbstractCegarLoop]: Abstraction has 12641 states and 21504 transitions. [2023-12-15 19:57:25,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 3 states have call successors, (95), 3 states have call predecessors, (95), 4 states have return successors, (95), 3 states have call predecessors, (95), 3 states have call successors, (95) [2023-12-15 19:57:25,950 INFO L276 IsEmpty]: Start isEmpty. Operand 12641 states and 21504 transitions. [2023-12-15 19:57:25,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2023-12-15 19:57:25,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:57:25,961 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:25,973 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 19:57:26,168 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 19:57:26,169 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:57:26,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:57:26,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1788014885, now seen corresponding path program 1 times [2023-12-15 19:57:26,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:57:26,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740815473] [2023-12-15 19:57:26,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:26,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:57:26,212 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:57:26,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [972398958] [2023-12-15 19:57:26,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:26,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:26,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:57:26,214 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 19:57:26,216 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 19:57:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:57:26,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 19:57:26,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:57:28,197 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 8856 proven. 0 refuted. 0 times theorem prover too weak. 9004 trivial. 0 not checked. [2023-12-15 19:57:28,197 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:57:28,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:57:28,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740815473] [2023-12-15 19:57:28,197 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:57:28,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972398958] [2023-12-15 19:57:28,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972398958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:57:28,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:57:28,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 19:57:28,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424701052] [2023-12-15 19:57:28,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:57:28,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 19:57:28,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:57:28,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 19:57:28,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:57:28,199 INFO L87 Difference]: Start difference. First operand 12641 states and 21504 transitions. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 7 states have internal predecessors, (153), 2 states have call successors, (95), 2 states have call predecessors, (95), 2 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2023-12-15 19:57:33,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:57:33,476 INFO L93 Difference]: Finished difference Result 71229 states and 119956 transitions. [2023-12-15 19:57:33,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 19:57:33,477 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 7 states have internal predecessors, (153), 2 states have call successors, (95), 2 states have call predecessors, (95), 2 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) Word has length 622 [2023-12-15 19:57:33,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:57:33,646 INFO L225 Difference]: With dead ends: 71229 [2023-12-15 19:57:33,647 INFO L226 Difference]: Without dead ends: 61495 [2023-12-15 19:57:33,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 615 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2023-12-15 19:57:33,674 INFO L413 NwaCegarLoop]: 1345 mSDtfsCounter, 5214 mSDsluCounter, 7385 mSDsCounter, 0 mSdLazyCounter, 2511 mSolverCounterSat, 1117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5214 SdHoareTripleChecker+Valid, 8730 SdHoareTripleChecker+Invalid, 3628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1117 IncrementalHoareTripleChecker+Valid, 2511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:57:33,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5214 Valid, 8730 Invalid, 3628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1117 Valid, 2511 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-15 19:57:33,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61495 states. [2023-12-15 19:57:36,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61495 to 57962. [2023-12-15 19:57:36,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57962 states, 48794 states have (on average 1.63772185104726) internal successors, (79911), 49062 states have internal predecessors, (79911), 8791 states have call successors, (8791), 376 states have call predecessors, (8791), 376 states have return successors, (8791), 8523 states have call predecessors, (8791), 8791 states have call successors, (8791) [2023-12-15 19:57:37,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57962 states to 57962 states and 97493 transitions. [2023-12-15 19:57:37,040 INFO L78 Accepts]: Start accepts. Automaton has 57962 states and 97493 transitions. Word has length 622 [2023-12-15 19:57:37,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:57:37,041 INFO L495 AbstractCegarLoop]: Abstraction has 57962 states and 97493 transitions. [2023-12-15 19:57:37,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 7 states have internal predecessors, (153), 2 states have call successors, (95), 2 states have call predecessors, (95), 2 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2023-12-15 19:57:37,041 INFO L276 IsEmpty]: Start isEmpty. Operand 57962 states and 97493 transitions. [2023-12-15 19:57:37,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2023-12-15 19:57:37,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:57:37,073 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:37,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 19:57:37,279 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 19:57:37,280 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:57:37,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:57:37,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1364449945, now seen corresponding path program 1 times [2023-12-15 19:57:37,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:57:37,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706243591] [2023-12-15 19:57:37,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:37,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:57:37,321 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:57:37,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [517471792] [2023-12-15 19:57:37,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:37,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:37,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:57:37,323 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 19:57:37,348 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 19:57:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:57:37,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 1432 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:57:37,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:57:37,711 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-12-15 19:57:37,711 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:57:37,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:57:37,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706243591] [2023-12-15 19:57:37,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:57:37,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517471792] [2023-12-15 19:57:37,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517471792] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:57:37,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:57:37,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:57:37,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060748041] [2023-12-15 19:57:37,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:57:37,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:57:37,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:57:37,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:57:37,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:57:37,714 INFO L87 Difference]: Start difference. First operand 57962 states and 97493 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-15 19:57:41,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:57:41,663 INFO L93 Difference]: Finished difference Result 151482 states and 254838 transitions. [2023-12-15 19:57:41,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:57:41,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 622 [2023-12-15 19:57:41,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:57:41,896 INFO L225 Difference]: With dead ends: 151482 [2023-12-15 19:57:41,897 INFO L226 Difference]: Without dead ends: 94276 [2023-12-15 19:57:41,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 620 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 19:57:41,980 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 357 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:57:41,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 1337 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:57:42,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94276 states. [2023-12-15 19:57:46,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94276 to 94146. [2023-12-15 19:57:47,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94146 states, 80305 states have (on average 1.6068488886121661) internal successors, (129038), 80733 states have internal predecessors, (129038), 13255 states have call successors, (13255), 585 states have call predecessors, (13255), 585 states have return successors, (13255), 12827 states have call predecessors, (13255), 13255 states have call successors, (13255) [2023-12-15 19:57:47,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94146 states to 94146 states and 155548 transitions. [2023-12-15 19:57:47,234 INFO L78 Accepts]: Start accepts. Automaton has 94146 states and 155548 transitions. Word has length 622 [2023-12-15 19:57:47,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:57:47,235 INFO L495 AbstractCegarLoop]: Abstraction has 94146 states and 155548 transitions. [2023-12-15 19:57:47,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2023-12-15 19:57:47,236 INFO L276 IsEmpty]: Start isEmpty. Operand 94146 states and 155548 transitions. [2023-12-15 19:57:47,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2023-12-15 19:57:47,296 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:57:47,296 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:47,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 19:57:47,503 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 19:57:47,504 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:57:47,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:57:47,504 INFO L85 PathProgramCache]: Analyzing trace with hash -463158691, now seen corresponding path program 1 times [2023-12-15 19:57:47,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:57:47,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280160750] [2023-12-15 19:57:47,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:47,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:57:47,546 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:57:47,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1239030909] [2023-12-15 19:57:47,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:57:47,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:57:47,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:57:47,547 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 19:57:47,564 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 19:57:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:57:47,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 1428 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:57:47,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:57:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2023-12-15 19:57:48,484 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:57:48,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:57:48,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280160750] [2023-12-15 19:57:48,484 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:57:48,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239030909] [2023-12-15 19:57:48,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239030909] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:57:48,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:57:48,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:57:48,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062323111] [2023-12-15 19:57:48,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:57:48,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:57:48,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:57:48,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:57:48,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:57:48,689 INFO L87 Difference]: Start difference. First operand 94146 states and 155548 transitions. Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Received shutdown request... [2023-12-15 19:57:56,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 19:57:56,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 618 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:57:56,269 INFO L413 NwaCegarLoop]: 1292 mSDtfsCounter, 1848 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1848 SdHoareTripleChecker+Valid, 2577 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:57:56,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1848 Valid, 2577 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 19:57:56,270 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:57:56,279 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 19:57:56,286 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:57:56,292 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 19:57:56,471 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 19:57:56,472 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (94146states) and FLOYD_HOARE automaton (currently 5 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (260545 states constructed, input type IntersectNwa). [2023-12-15 19:57:56,476 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:57:56,478 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:57:56,479 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:57:56 BoogieIcfgContainer [2023-12-15 19:57:56,479 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:57:56,479 INFO L158 Benchmark]: Toolchain (without parser) took 58733.43ms. Allocated memory was 261.1MB in the beginning and 4.4GB in the end (delta: 4.1GB). Free memory was 214.2MB in the beginning and 3.3GB in the end (delta: -3.1GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2023-12-15 19:57:56,479 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 192.9MB. Free memory is still 142.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:57:56,480 INFO L158 Benchmark]: CACSL2BoogieTranslator took 369.62ms. Allocated memory is still 261.1MB. Free memory was 213.9MB in the beginning and 183.8MB in the end (delta: 30.1MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2023-12-15 19:57:56,480 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.78ms. Allocated memory is still 261.1MB. Free memory was 183.8MB in the beginning and 172.9MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-15 19:57:56,480 INFO L158 Benchmark]: Boogie Preprocessor took 133.26ms. Allocated memory is still 261.1MB. Free memory was 172.9MB in the beginning and 211.5MB in the end (delta: -38.5MB). Peak memory consumption was 14.3MB. Max. memory is 8.0GB. [2023-12-15 19:57:56,480 INFO L158 Benchmark]: RCFGBuilder took 978.94ms. Allocated memory is still 261.1MB. Free memory was 211.5MB in the beginning and 123.5MB in the end (delta: 88.0MB). Peak memory consumption was 88.1MB. Max. memory is 8.0GB. [2023-12-15 19:57:56,480 INFO L158 Benchmark]: TraceAbstraction took 57177.28ms. Allocated memory was 261.1MB in the beginning and 4.4GB in the end (delta: 4.1GB). Free memory was 122.5MB in the beginning and 3.3GB in the end (delta: -3.2GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2023-12-15 19:57:56,481 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 192.9MB. Free memory is still 142.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 369.62ms. Allocated memory is still 261.1MB. Free memory was 213.9MB in the beginning and 183.8MB in the end (delta: 30.1MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 68.78ms. Allocated memory is still 261.1MB. Free memory was 183.8MB in the beginning and 172.9MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 133.26ms. Allocated memory is still 261.1MB. Free memory was 172.9MB in the beginning and 211.5MB in the end (delta: -38.5MB). Peak memory consumption was 14.3MB. Max. memory is 8.0GB. * RCFGBuilder took 978.94ms. Allocated memory is still 261.1MB. Free memory was 211.5MB in the beginning and 123.5MB in the end (delta: 88.0MB). Peak memory consumption was 88.1MB. Max. memory is 8.0GB. * TraceAbstraction took 57177.28ms. Allocated memory was 261.1MB in the beginning and 4.4GB in the end (delta: 4.1GB). Free memory was 122.5MB in the beginning and 3.3GB in the end (delta: -3.2GB). Peak memory consumption was 2.1GB. 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 constructing difference of abstraction (94146states) and FLOYD_HOARE automaton (currently 5 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (260545 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 337 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 57.1s, OverallIterations: 11, TraceHistogramMax: 95, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 33.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13190 SdHoareTripleChecker+Valid, 15.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13050 mSDsluCounter, 27028 SdHoareTripleChecker+Invalid, 14.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18736 mSDsCounter, 2068 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6861 IncrementalHoareTripleChecker+Invalid, 8929 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2068 mSolverCounterUnsat, 8292 mSDtfsCounter, 6861 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7575 GetRequests, 7491 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94146occurred in iteration=10, InterpolantAutomatonStates: 81, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 10.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 11745 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 7441 NumberOfCodeBlocks, 7441 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 7432 ConstructedInterpolants, 30 QuantifiedInterpolants, 24134 SizeOfPredicates, 25 NumberOfNonLiveVariables, 15686 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 12 InterpolantComputations, 9 PerfectInterpolantSequences, 213954/214320 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