/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-58.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 20:08:46,070 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 20:08:46,118 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 20:08:46,122 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 20:08:46,122 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 20:08:46,140 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 20:08:46,140 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 20:08:46,141 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 20:08:46,141 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 20:08:46,142 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 20:08:46,142 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 20:08:46,142 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 20:08:46,143 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 20:08:46,143 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 20:08:46,143 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 20:08:46,144 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 20:08:46,144 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 20:08:46,144 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 20:08:46,145 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 20:08:46,145 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 20:08:46,145 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 20:08:46,146 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 20:08:46,146 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 20:08:46,146 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 20:08:46,147 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 20:08:46,147 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 20:08:46,147 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 20:08:46,148 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 20:08:46,148 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 20:08:46,148 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 20:08:46,149 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 20:08:46,149 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 20:08:46,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 20:08:46,149 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 20:08:46,150 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 20:08:46,150 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 20:08:46,150 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 20:08:46,150 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 20:08:46,151 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 20:08:46,151 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 20:08:46,151 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 20:08:46,156 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 20:08:46,156 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 20:08:46,156 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 20:08:46,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 20:08:46,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 20:08:46,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 20:08:46,412 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 20:08:46,412 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 20:08:46,413 INFO L431 ainManager$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-58.i [2023-12-20 20:08:47,588 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 20:08:47,834 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 20:08:47,834 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-58.i [2023-12-20 20:08:47,850 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9a7dc46c/508778042b3c4d7b8f2376f0c6e7d401/FLAG526a57196 [2023-12-20 20:08:47,866 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9a7dc46c/508778042b3c4d7b8f2376f0c6e7d401 [2023-12-20 20:08:47,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 20:08:47,869 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 20:08:47,870 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 20:08:47,870 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 20:08:47,875 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 20:08:47,876 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 08:08:47" (1/1) ... [2023-12-20 20:08:47,877 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f59c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:08:47, skipping insertion in model container [2023-12-20 20:08:47,877 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 08:08:47" (1/1) ... [2023-12-20 20:08:47,924 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 20:08:48,043 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-58.i[916,929] [2023-12-20 20:08:48,234 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 20:08:48,258 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 20:08:48,273 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-58.i[916,929] [2023-12-20 20:08:48,381 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 20:08:48,408 INFO L206 MainTranslator]: Completed translation [2023-12-20 20:08:48,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:08:48 WrapperNode [2023-12-20 20:08:48,409 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 20:08:48,410 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 20:08:48,410 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 20:08:48,410 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 20:08:48,416 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:08:48" (1/1) ... [2023-12-20 20:08:48,437 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:08:48" (1/1) ... [2023-12-20 20:08:48,511 INFO L138 Inliner]: procedures = 26, calls = 119, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 738 [2023-12-20 20:08:48,512 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 20:08:48,512 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 20:08:48,512 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 20:08:48,513 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 20:08:48,524 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:08:48" (1/1) ... [2023-12-20 20:08:48,524 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:08:48" (1/1) ... [2023-12-20 20:08:48,542 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:08:48" (1/1) ... [2023-12-20 20:08:48,598 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 20:08:48,598 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:08:48" (1/1) ... [2023-12-20 20:08:48,598 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:08:48" (1/1) ... [2023-12-20 20:08:48,644 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:08:48" (1/1) ... [2023-12-20 20:08:48,660 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:08:48" (1/1) ... [2023-12-20 20:08:48,667 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:08:48" (1/1) ... [2023-12-20 20:08:48,678 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:08:48" (1/1) ... [2023-12-20 20:08:48,692 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 20:08:48,693 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 20:08:48,693 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 20:08:48,693 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 20:08:48,694 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:08:48" (1/1) ... [2023-12-20 20:08:48,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 20:08:48,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:08:48,720 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 20:08:48,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 20:08:48,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 20:08:48,755 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-20 20:08:48,756 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-20 20:08:48,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 20:08:48,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 20:08:48,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 20:08:48,919 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 20:08:48,921 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 20:08:49,692 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 20:08:49,752 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 20:08:49,752 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 20:08:49,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 08:08:49 BoogieIcfgContainer [2023-12-20 20:08:49,753 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 20:08:49,755 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 20:08:49,756 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 20:08:49,758 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 20:08:49,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 08:08:47" (1/3) ... [2023-12-20 20:08:49,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2534fc6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 08:08:49, skipping insertion in model container [2023-12-20 20:08:49,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:08:48" (2/3) ... [2023-12-20 20:08:49,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2534fc6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 08:08:49, skipping insertion in model container [2023-12-20 20:08:49,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 08:08:49" (3/3) ... [2023-12-20 20:08:49,760 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-58.i [2023-12-20 20:08:49,775 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 20:08:49,775 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 20:08:49,839 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 20:08:49,844 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;@70783983, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 20:08:49,845 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 20:08:49,851 INFO L276 IsEmpty]: Start isEmpty. Operand has 300 states, 191 states have (on average 1.581151832460733) internal successors, (302), 192 states have internal predecessors, (302), 106 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 106 states have call predecessors, (106), 106 states have call successors, (106) [2023-12-20 20:08:49,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2023-12-20 20:08:49,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:08:49,888 INFO L195 NwaCegarLoop]: trace histogram [106, 106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:08:49,888 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:08:49,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:08:49,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1386047887, now seen corresponding path program 1 times [2023-12-20 20:08:49,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:08:49,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216204401] [2023-12-20 20:08:49,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:49,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:08:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:08:50,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:08:50,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216204401] [2023-12-20 20:08:50,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-20 20:08:50,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448769349] [2023-12-20 20:08:50,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:50,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:08:50,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:08:50,332 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 20:08:50,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 20:08:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:08:50,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 1537 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-20 20:08:50,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:08:50,894 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 22050 trivial. 0 not checked. [2023-12-20 20:08:50,895 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:08:50,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448769349] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:08:50,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:08:50,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 20:08:50,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326028768] [2023-12-20 20:08:50,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:08:50,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 20:08:50,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:08:50,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 20:08:50,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 20:08:50,927 INFO L87 Difference]: Start difference. First operand has 300 states, 191 states have (on average 1.581151832460733) internal successors, (302), 192 states have internal predecessors, (302), 106 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 106 states have call predecessors, (106), 106 states have call successors, (106) Second operand has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 2 states have call successors, (106), 2 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 2 states have call successors, (106) [2023-12-20 20:08:51,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:08:51,030 INFO L93 Difference]: Finished difference Result 597 states and 1132 transitions. [2023-12-20 20:08:51,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 20:08:51,033 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 2 states have call successors, (106), 2 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 2 states have call successors, (106) Word has length 675 [2023-12-20 20:08:51,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:08:51,048 INFO L225 Difference]: With dead ends: 597 [2023-12-20 20:08:51,048 INFO L226 Difference]: Without dead ends: 298 [2023-12-20 20:08:51,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 674 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 20:08:51,060 INFO L413 NwaCegarLoop]: 506 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, 506 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 [2023-12-20 20:08:51,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 506 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:08:51,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-12-20 20:08:51,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2023-12-20 20:08:51,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 190 states have (on average 1.563157894736842) internal successors, (297), 190 states have internal predecessors, (297), 106 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 106 states have call predecessors, (106), 106 states have call successors, (106) [2023-12-20 20:08:51,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 509 transitions. [2023-12-20 20:08:51,156 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 509 transitions. Word has length 675 [2023-12-20 20:08:51,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:08:51,157 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 509 transitions. [2023-12-20 20:08:51,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 2 states have call successors, (106), 2 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 2 states have call successors, (106) [2023-12-20 20:08:51,158 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 509 transitions. [2023-12-20 20:08:51,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2023-12-20 20:08:51,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:08:51,175 INFO L195 NwaCegarLoop]: trace histogram [106, 106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:08:51,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 20:08:51,382 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 [2023-12-20 20:08:51,383 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:08:51,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:08:51,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1285527865, now seen corresponding path program 1 times [2023-12-20 20:08:51,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:08:51,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159831641] [2023-12-20 20:08:51,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:51,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:08:51,572 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:08:51,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1180663669] [2023-12-20 20:08:51,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:51,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:08:51,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:08:51,577 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 20:08:51,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 20:08:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:08:51,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 1537 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:08:51,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:08:52,687 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22260 trivial. 0 not checked. [2023-12-20 20:08:52,688 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:08:52,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:08:52,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159831641] [2023-12-20 20:08:52,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:08:52,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180663669] [2023-12-20 20:08:52,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180663669] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:08:52,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:08:52,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 20:08:52,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846718301] [2023-12-20 20:08:52,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:08:52,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:08:52,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:08:52,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:08:52,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:08:52,696 INFO L87 Difference]: Start difference. First operand 298 states and 509 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-12-20 20:08:52,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:08:52,776 INFO L93 Difference]: Finished difference Result 892 states and 1525 transitions. [2023-12-20 20:08:52,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:08:52,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) Word has length 675 [2023-12-20 20:08:52,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:08:52,782 INFO L225 Difference]: With dead ends: 892 [2023-12-20 20:08:52,782 INFO L226 Difference]: Without dead ends: 595 [2023-12-20 20:08:52,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 673 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:08:52,784 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 183 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:08:52,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 1078 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:08:52,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2023-12-20 20:08:52,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 593. [2023-12-20 20:08:52,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 378 states have (on average 1.5634920634920635) internal successors, (591), 378 states have internal predecessors, (591), 212 states have call successors, (212), 2 states have call predecessors, (212), 2 states have return successors, (212), 212 states have call predecessors, (212), 212 states have call successors, (212) [2023-12-20 20:08:52,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1015 transitions. [2023-12-20 20:08:52,863 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1015 transitions. Word has length 675 [2023-12-20 20:08:52,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:08:52,865 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 1015 transitions. [2023-12-20 20:08:52,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-12-20 20:08:52,866 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1015 transitions. [2023-12-20 20:08:52,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2023-12-20 20:08:52,871 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:08:52,872 INFO L195 NwaCegarLoop]: trace histogram [106, 106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:08:52,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 20:08:53,080 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 [2023-12-20 20:08:53,080 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:08:53,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:08:53,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1208627067, now seen corresponding path program 1 times [2023-12-20 20:08:53,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:08:53,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869903402] [2023-12-20 20:08:53,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:53,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:08:53,171 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:08:53,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1154880434] [2023-12-20 20:08:53,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:53,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:08:53,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:08:53,174 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 20:08:53,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 20:08:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:08:53,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 1540 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:08:53,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:08:53,569 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22260 trivial. 0 not checked. [2023-12-20 20:08:53,569 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:08:53,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:08:53,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869903402] [2023-12-20 20:08:53,570 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:08:53,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154880434] [2023-12-20 20:08:53,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154880434] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:08:53,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:08:53,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:08:53,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140057168] [2023-12-20 20:08:53,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:08:53,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:08:53,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:08:53,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:08:53,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:08:53,594 INFO L87 Difference]: Start difference. First operand 593 states and 1015 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, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-12-20 20:08:53,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:08:53,709 INFO L93 Difference]: Finished difference Result 1773 states and 3035 transitions. [2023-12-20 20:08:53,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:08:53,710 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, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) Word has length 675 [2023-12-20 20:08:53,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:08:53,720 INFO L225 Difference]: With dead ends: 1773 [2023-12-20 20:08:53,721 INFO L226 Difference]: Without dead ends: 1181 [2023-12-20 20:08:53,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 673 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:08:53,725 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 494 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:08:53,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 1376 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:08:53,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2023-12-20 20:08:53,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1179. [2023-12-20 20:08:53,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 750 states have (on average 1.5493333333333332) internal successors, (1162), 750 states have internal predecessors, (1162), 424 states have call successors, (424), 4 states have call predecessors, (424), 4 states have return successors, (424), 424 states have call predecessors, (424), 424 states have call successors, (424) [2023-12-20 20:08:53,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 2010 transitions. [2023-12-20 20:08:53,893 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 2010 transitions. Word has length 675 [2023-12-20 20:08:53,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:08:53,895 INFO L495 AbstractCegarLoop]: Abstraction has 1179 states and 2010 transitions. [2023-12-20 20:08:53,895 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, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-12-20 20:08:53,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 2010 transitions. [2023-12-20 20:08:53,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2023-12-20 20:08:53,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:08:53,901 INFO L195 NwaCegarLoop]: trace histogram [106, 106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:08:53,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 20:08:54,109 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 [2023-12-20 20:08:54,110 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:08:54,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:08:54,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1851485679, now seen corresponding path program 1 times [2023-12-20 20:08:54,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:08:54,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971305692] [2023-12-20 20:08:54,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:54,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:08:54,173 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:08:54,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [555052936] [2023-12-20 20:08:54,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:54,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:08:54,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:08:54,175 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 20:08:54,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 20:08:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:08:54,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 1540 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:08:54,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:08:54,644 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22260 trivial. 0 not checked. [2023-12-20 20:08:54,645 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:08:54,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:08:54,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971305692] [2023-12-20 20:08:54,645 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:08:54,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555052936] [2023-12-20 20:08:54,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555052936] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:08:54,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:08:54,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:08:54,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229955327] [2023-12-20 20:08:54,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:08:54,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:08:54,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:08:54,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:08:54,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:08:54,649 INFO L87 Difference]: Start difference. First operand 1179 states and 2010 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-12-20 20:08:54,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:08:54,743 INFO L93 Difference]: Finished difference Result 3011 states and 5156 transitions. [2023-12-20 20:08:54,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:08:54,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) Word has length 676 [2023-12-20 20:08:54,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:08:54,755 INFO L225 Difference]: With dead ends: 3011 [2023-12-20 20:08:54,755 INFO L226 Difference]: Without dead ends: 1833 [2023-12-20 20:08:54,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 674 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:08:54,765 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 263 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:08:54,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 1202 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:08:54,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1833 states. [2023-12-20 20:08:54,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1833 to 1827. [2023-12-20 20:08:54,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1827 states, 1290 states have (on average 1.6108527131782946) internal successors, (2078), 1294 states have internal predecessors, (2078), 528 states have call successors, (528), 8 states have call predecessors, (528), 8 states have return successors, (528), 524 states have call predecessors, (528), 528 states have call successors, (528) [2023-12-20 20:08:54,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 3134 transitions. [2023-12-20 20:08:54,977 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 3134 transitions. Word has length 676 [2023-12-20 20:08:54,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:08:54,979 INFO L495 AbstractCegarLoop]: Abstraction has 1827 states and 3134 transitions. [2023-12-20 20:08:54,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-12-20 20:08:54,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 3134 transitions. [2023-12-20 20:08:54,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2023-12-20 20:08:54,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:08:54,986 INFO L195 NwaCegarLoop]: trace histogram [106, 106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:08:54,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 20:08:55,194 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 [2023-12-20 20:08:55,195 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:08:55,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:08:55,195 INFO L85 PathProgramCache]: Analyzing trace with hash -27645267, now seen corresponding path program 1 times [2023-12-20 20:08:55,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:08:55,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275675786] [2023-12-20 20:08:55,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:55,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:08:55,260 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:08:55,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1505524310] [2023-12-20 20:08:55,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:55,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:08:55,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:08:55,262 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 20:08:55,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 20:08:55,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:08:55,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 1541 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:08:55,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:08:55,675 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22260 trivial. 0 not checked. [2023-12-20 20:08:55,675 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:08:55,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:08:55,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275675786] [2023-12-20 20:08:55,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:08:55,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505524310] [2023-12-20 20:08:55,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505524310] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:08:55,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:08:55,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:08:55,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677018043] [2023-12-20 20:08:55,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:08:55,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:08:55,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:08:55,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:08:55,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:08:55,686 INFO L87 Difference]: Start difference. First operand 1827 states and 3134 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-12-20 20:08:55,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:08:55,863 INFO L93 Difference]: Finished difference Result 5471 states and 9384 transitions. [2023-12-20 20:08:55,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:08:55,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) Word has length 676 [2023-12-20 20:08:55,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:08:55,881 INFO L225 Difference]: With dead ends: 5471 [2023-12-20 20:08:55,881 INFO L226 Difference]: Without dead ends: 3645 [2023-12-20 20:08:55,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 674 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:08:55,887 INFO L413 NwaCegarLoop]: 960 mSDtfsCounter, 489 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:08:55,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 1455 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:08:55,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3645 states. [2023-12-20 20:08:56,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3645 to 3643. [2023-12-20 20:08:56,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3643 states, 2570 states have (on average 1.6007782101167316) internal successors, (4114), 2578 states have internal predecessors, (4114), 1056 states have call successors, (1056), 16 states have call predecessors, (1056), 16 states have return successors, (1056), 1048 states have call predecessors, (1056), 1056 states have call successors, (1056) [2023-12-20 20:08:56,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 6226 transitions. [2023-12-20 20:08:56,232 INFO L78 Accepts]: Start accepts. Automaton has 3643 states and 6226 transitions. Word has length 676 [2023-12-20 20:08:56,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:08:56,233 INFO L495 AbstractCegarLoop]: Abstraction has 3643 states and 6226 transitions. [2023-12-20 20:08:56,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-12-20 20:08:56,233 INFO L276 IsEmpty]: Start isEmpty. Operand 3643 states and 6226 transitions. [2023-12-20 20:08:56,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2023-12-20 20:08:56,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:08:56,240 INFO L195 NwaCegarLoop]: trace histogram [106, 106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:08:56,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 20:08:56,448 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 [2023-12-20 20:08:56,449 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:08:56,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:08:56,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1123180792, now seen corresponding path program 1 times [2023-12-20 20:08:56,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:08:56,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945346401] [2023-12-20 20:08:56,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:56,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:08:56,507 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:08:56,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [611494990] [2023-12-20 20:08:56,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:56,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:08:56,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:08:56,509 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 20:08:56,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 20:08:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:08:56,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 1542 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:08:56,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:08:56,908 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22260 trivial. 0 not checked. [2023-12-20 20:08:56,908 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:08:56,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:08:56,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945346401] [2023-12-20 20:08:56,909 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:08:56,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611494990] [2023-12-20 20:08:56,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611494990] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:08:56,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:08:56,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:08:56,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762237619] [2023-12-20 20:08:56,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:08:56,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:08:56,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:08:56,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:08:56,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:08:56,911 INFO L87 Difference]: Start difference. First operand 3643 states and 6226 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, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-12-20 20:08:57,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:08:57,157 INFO L93 Difference]: Finished difference Result 8975 states and 15180 transitions. [2023-12-20 20:08:57,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:08:57,158 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, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) Word has length 677 [2023-12-20 20:08:57,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:08:57,184 INFO L225 Difference]: With dead ends: 8975 [2023-12-20 20:08:57,184 INFO L226 Difference]: Without dead ends: 5333 [2023-12-20 20:08:57,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 675 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:08:57,197 INFO L413 NwaCegarLoop]: 667 mSDtfsCounter, 211 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 20:08:57,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 1158 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 20:08:57,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5333 states. [2023-12-20 20:08:57,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5333 to 5323. [2023-12-20 20:08:57,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5323 states, 3610 states have (on average 1.5318559556786704) internal successors, (5530), 3634 states have internal predecessors, (5530), 1680 states have call successors, (1680), 32 states have call predecessors, (1680), 32 states have return successors, (1680), 1656 states have call predecessors, (1680), 1680 states have call successors, (1680) [2023-12-20 20:08:57,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5323 states to 5323 states and 8890 transitions. [2023-12-20 20:08:57,719 INFO L78 Accepts]: Start accepts. Automaton has 5323 states and 8890 transitions. Word has length 677 [2023-12-20 20:08:57,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:08:57,720 INFO L495 AbstractCegarLoop]: Abstraction has 5323 states and 8890 transitions. [2023-12-20 20:08:57,720 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, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-12-20 20:08:57,720 INFO L276 IsEmpty]: Start isEmpty. Operand 5323 states and 8890 transitions. [2023-12-20 20:08:57,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2023-12-20 20:08:57,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:08:57,729 INFO L195 NwaCegarLoop]: trace histogram [106, 106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:08:57,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-20 20:08:57,936 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 [2023-12-20 20:08:57,936 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:08:57,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:08:57,937 INFO L85 PathProgramCache]: Analyzing trace with hash 700478966, now seen corresponding path program 1 times [2023-12-20 20:08:57,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:08:57,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132866507] [2023-12-20 20:08:57,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:57,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:08:57,992 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:08:57,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [609824096] [2023-12-20 20:08:57,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:08:57,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:08:57,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:08:57,994 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) [2023-12-20 20:08:57,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 20:08:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:08:58,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 1541 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 20:08:58,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:08:59,829 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22260 trivial. 0 not checked. [2023-12-20 20:08:59,830 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:08:59,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:08:59,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132866507] [2023-12-20 20:08:59,830 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:08:59,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609824096] [2023-12-20 20:08:59,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609824096] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:08:59,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:08:59,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 20:08:59,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374453515] [2023-12-20 20:08:59,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:08:59,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:08:59,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:08:59,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:08:59,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:08:59,833 INFO L87 Difference]: Start difference. First operand 5323 states and 8890 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-12-20 20:09:00,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:09:00,159 INFO L93 Difference]: Finished difference Result 13307 states and 22218 transitions. [2023-12-20 20:09:00,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:09:00,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) Word has length 677 [2023-12-20 20:09:00,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:09:00,215 INFO L225 Difference]: With dead ends: 13307 [2023-12-20 20:09:00,216 INFO L226 Difference]: Without dead ends: 7985 [2023-12-20 20:09:00,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 675 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:09:00,240 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 213 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:09:00,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1000 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:09:00,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7985 states. [2023-12-20 20:09:00,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7985 to 7979. [2023-12-20 20:09:00,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7979 states, 5410 states have (on average 1.5275415896487985) internal successors, (8264), 5446 states have internal predecessors, (8264), 2520 states have call successors, (2520), 48 states have call predecessors, (2520), 48 states have return successors, (2520), 2484 states have call predecessors, (2520), 2520 states have call successors, (2520) [2023-12-20 20:09:00,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7979 states to 7979 states and 13304 transitions. [2023-12-20 20:09:00,991 INFO L78 Accepts]: Start accepts. Automaton has 7979 states and 13304 transitions. Word has length 677 [2023-12-20 20:09:00,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:09:00,992 INFO L495 AbstractCegarLoop]: Abstraction has 7979 states and 13304 transitions. [2023-12-20 20:09:00,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-12-20 20:09:00,993 INFO L276 IsEmpty]: Start isEmpty. Operand 7979 states and 13304 transitions. [2023-12-20 20:09:01,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2023-12-20 20:09:01,003 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:09:01,004 INFO L195 NwaCegarLoop]: trace histogram [106, 106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:09:01,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 20:09:01,212 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 [2023-12-20 20:09:01,213 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:09:01,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:09:01,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1624293650, now seen corresponding path program 1 times [2023-12-20 20:09:01,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:09:01,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593309550] [2023-12-20 20:09:01,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:09:01,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:09:01,275 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:09:01,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [824178602] [2023-12-20 20:09:01,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:09:01,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:09:01,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:09:01,280 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) [2023-12-20 20:09:01,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 20:09:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:09:01,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 1540 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 20:09:01,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:09:02,370 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22260 trivial. 0 not checked. [2023-12-20 20:09:02,370 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:09:02,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:09:02,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593309550] [2023-12-20 20:09:02,371 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:09:02,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824178602] [2023-12-20 20:09:02,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824178602] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:09:02,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:09:02,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 20:09:02,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476794099] [2023-12-20 20:09:02,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:09:02,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 20:09:02,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:09:02,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 20:09:02,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 20:09:02,373 INFO L87 Difference]: Start difference. First operand 7979 states and 13304 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-12-20 20:09:03,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:09:03,156 INFO L93 Difference]: Finished difference Result 21279 states and 35496 transitions. [2023-12-20 20:09:03,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 20:09:03,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) Word has length 677 [2023-12-20 20:09:03,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:09:03,229 INFO L225 Difference]: With dead ends: 21279 [2023-12-20 20:09:03,229 INFO L226 Difference]: Without dead ends: 13301 [2023-12-20 20:09:03,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 678 GetRequests, 675 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 20:09:03,263 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 966 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 20:09:03,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 1004 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 20:09:03,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13301 states. [2023-12-20 20:09:04,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13301 to 13299. [2023-12-20 20:09:04,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13299 states, 9018 states have (on average 1.5178531825238413) internal successors, (13688), 9078 states have internal predecessors, (13688), 4200 states have call successors, (4200), 80 states have call predecessors, (4200), 80 states have return successors, (4200), 4140 states have call predecessors, (4200), 4200 states have call successors, (4200) [2023-12-20 20:09:04,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13299 states to 13299 states and 22088 transitions. [2023-12-20 20:09:04,490 INFO L78 Accepts]: Start accepts. Automaton has 13299 states and 22088 transitions. Word has length 677 [2023-12-20 20:09:04,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:09:04,491 INFO L495 AbstractCegarLoop]: Abstraction has 13299 states and 22088 transitions. [2023-12-20 20:09:04,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-12-20 20:09:04,492 INFO L276 IsEmpty]: Start isEmpty. Operand 13299 states and 22088 transitions. [2023-12-20 20:09:04,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2023-12-20 20:09:04,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:09:04,506 INFO L195 NwaCegarLoop]: trace histogram [106, 106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:09:04,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-20 20:09:04,713 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 [2023-12-20 20:09:04,714 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:09:04,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:09:04,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1390809968, now seen corresponding path program 1 times [2023-12-20 20:09:04,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:09:04,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858819045] [2023-12-20 20:09:04,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:09:04,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:09:04,761 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:09:04,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [467247101] [2023-12-20 20:09:04,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:09:04,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:09:04,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:09:04,763 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) [2023-12-20 20:09:04,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 20:09:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:09:05,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 1541 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-20 20:09:05,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:09:05,859 INFO L134 CoverageAnalysis]: Checked inductivity of 22260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22260 trivial. 0 not checked. [2023-12-20 20:09:05,859 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:09:05,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:09:05,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858819045] [2023-12-20 20:09:05,859 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:09:05,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467247101] [2023-12-20 20:09:05,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467247101] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:09:05,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:09:05,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 20:09:05,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491188716] [2023-12-20 20:09:05,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:09:05,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 20:09:05,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:09:05,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 20:09:05,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 20:09:05,877 INFO L87 Difference]: Start difference. First operand 13299 states and 22088 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, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-12-20 20:09:08,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:09:08,497 INFO L93 Difference]: Finished difference Result 55453 states and 91945 transitions. [2023-12-20 20:09:08,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 20:09:08,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) Word has length 677 [2023-12-20 20:09:08,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:09:08,645 INFO L225 Difference]: With dead ends: 55453 [2023-12-20 20:09:08,645 INFO L226 Difference]: Without dead ends: 42155 [2023-12-20 20:09:08,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 673 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-20 20:09:08,693 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 1332 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1332 SdHoareTripleChecker+Valid, 2201 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 20:09:08,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1332 Valid, 2201 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 20:09:08,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42155 states. [2023-12-20 20:09:11,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42155 to 19683. [2023-12-20 20:09:11,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19683 states, 13578 states have (on average 1.5199587568124908) internal successors, (20638), 13686 states have internal predecessors, (20638), 5976 states have call successors, (5976), 128 states have call predecessors, (5976), 128 states have return successors, (5976), 5868 states have call predecessors, (5976), 5976 states have call successors, (5976) [2023-12-20 20:09:11,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19683 states to 19683 states and 32590 transitions. [2023-12-20 20:09:11,337 INFO L78 Accepts]: Start accepts. Automaton has 19683 states and 32590 transitions. Word has length 677 [2023-12-20 20:09:11,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:09:11,338 INFO L495 AbstractCegarLoop]: Abstraction has 19683 states and 32590 transitions. [2023-12-20 20:09:11,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (106), 1 states have call predecessors, (106), 1 states have return successors, (106), 1 states have call predecessors, (106), 1 states have call successors, (106) [2023-12-20 20:09:11,338 INFO L276 IsEmpty]: Start isEmpty. Operand 19683 states and 32590 transitions. [2023-12-20 20:09:11,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2023-12-20 20:09:11,357 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:09:11,357 INFO L195 NwaCegarLoop]: trace histogram [106, 106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 20:09:11,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-20 20:09:11,565 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 [2023-12-20 20:09:11,566 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:09:11,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:09:11,566 INFO L85 PathProgramCache]: Analyzing trace with hash -2103461202, now seen corresponding path program 1 times [2023-12-20 20:09:11,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:09:11,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914069517] [2023-12-20 20:09:11,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:09:11,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:09:11,616 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:09:11,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [212715475] [2023-12-20 20:09:11,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:09:11,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:09:11,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:09:11,618 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) [2023-12-20 20:09:11,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 20:09:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:09:11,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 1541 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-20 20:09:11,996 INFO L285 TraceCheckSpWp]: Computing forward predicates...