/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-30.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 07:36:21,748 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 07:36:21,815 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 07:36:21,821 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 07:36:21,821 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 07:36:21,846 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 07:36:21,847 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 07:36:21,847 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 07:36:21,847 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 07:36:21,851 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 07:36:21,851 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 07:36:21,851 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 07:36:21,851 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 07:36:21,852 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 07:36:21,853 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 07:36:21,853 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 07:36:21,853 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 07:36:21,853 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 07:36:21,854 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 07:36:21,854 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 07:36:21,854 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 07:36:21,855 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 07:36:21,855 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 07:36:21,855 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 07:36:21,855 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 07:36:21,855 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 07:36:21,856 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 07:36:21,856 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 07:36:21,856 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 07:36:21,856 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 07:36:21,857 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 07:36:21,857 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 07:36:21,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:36:21,858 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 07:36:21,858 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 07:36:21,858 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 07:36:21,858 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 07:36:21,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 07:36:21,858 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 07:36:21,858 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 07:36:21,859 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 07:36:21,859 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 07:36:21,859 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 07:36:21,859 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 07:36:22,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 07:36:22,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 07:36:22,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 07:36:22,104 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 07:36:22,105 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 07:36:22,105 INFO L431 ainManager$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-30.i [2023-12-19 07:36:23,450 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 07:36:23,702 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 07:36:23,703 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-30.i [2023-12-19 07:36:23,720 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85bab73dc/e6bd71a14486465c9580543e79c114de/FLAG02131bb45 [2023-12-19 07:36:23,735 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85bab73dc/e6bd71a14486465c9580543e79c114de [2023-12-19 07:36:23,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 07:36:23,738 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 07:36:23,739 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 07:36:23,739 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 07:36:23,743 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 07:36:23,743 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:36:23" (1/1) ... [2023-12-19 07:36:23,744 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47592049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:36:23, skipping insertion in model container [2023-12-19 07:36:23,744 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:36:23" (1/1) ... [2023-12-19 07:36:23,788 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 07:36:23,918 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-30.i[916,929] [2023-12-19 07:36:24,089 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:36:24,106 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 07:36:24,116 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-30.i[916,929] [2023-12-19 07:36:24,188 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:36:24,214 INFO L206 MainTranslator]: Completed translation [2023-12-19 07:36:24,214 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:36:24 WrapperNode [2023-12-19 07:36:24,214 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 07:36:24,215 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 07:36:24,218 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 07:36:24,219 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 07:36:24,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:36:24" (1/1) ... [2023-12-19 07:36:24,250 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:36:24" (1/1) ... [2023-12-19 07:36:24,319 INFO L138 Inliner]: procedures = 26, calls = 125, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 972 [2023-12-19 07:36:24,319 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 07:36:24,320 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 07:36:24,320 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 07:36:24,320 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 07:36:24,329 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:36:24" (1/1) ... [2023-12-19 07:36:24,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:36:24" (1/1) ... [2023-12-19 07:36:24,337 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:36:24" (1/1) ... [2023-12-19 07:36:24,376 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]. [2023-12-19 07:36:24,376 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:36:24" (1/1) ... [2023-12-19 07:36:24,376 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:36:24" (1/1) ... [2023-12-19 07:36:24,405 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:36:24" (1/1) ... [2023-12-19 07:36:24,413 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:36:24" (1/1) ... [2023-12-19 07:36:24,419 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:36:24" (1/1) ... [2023-12-19 07:36:24,424 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:36:24" (1/1) ... [2023-12-19 07:36:24,447 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 07:36:24,448 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 07:36:24,448 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 07:36:24,448 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 07:36:24,449 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:36:24" (1/1) ... [2023-12-19 07:36:24,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:36:24,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:36:24,475 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) [2023-12-19 07:36:24,485 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 [2023-12-19 07:36:24,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 07:36:24,503 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 07:36:24,503 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 07:36:24,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 07:36:24,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 07:36:24,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 07:36:24,673 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 07:36:24,677 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 07:36:25,714 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 07:36:25,769 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 07:36:25,769 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 07:36:25,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:36:25 BoogieIcfgContainer [2023-12-19 07:36:25,770 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 07:36:25,772 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 07:36:25,772 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 07:36:25,775 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 07:36:25,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 07:36:23" (1/3) ... [2023-12-19 07:36:25,776 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da26eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:36:25, skipping insertion in model container [2023-12-19 07:36:25,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:36:24" (2/3) ... [2023-12-19 07:36:25,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da26eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:36:25, skipping insertion in model container [2023-12-19 07:36:25,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:36:25" (3/3) ... [2023-12-19 07:36:25,778 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-30.i [2023-12-19 07:36:25,791 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 07:36:25,791 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 07:36:25,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 07:36:25,857 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;@58380d08, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 07:36:25,857 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 07:36:25,864 INFO L276 IsEmpty]: Start isEmpty. Operand has 353 states, 238 states have (on average 1.6470588235294117) internal successors, (392), 239 states have internal predecessors, (392), 112 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-19 07:36:25,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2023-12-19 07:36:25,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:36:25,923 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:36:25,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:36:25,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:36:25,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1474156765, now seen corresponding path program 1 times [2023-12-19 07:36:25,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:36:25,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736864475] [2023-12-19 07:36:25,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:25,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:36:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:36:26,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:36:26,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736864475] [2023-12-19 07:36:26,291 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 07:36:26,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152224934] [2023-12-19 07:36:26,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:26,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:36:26,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:36:26,312 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) [2023-12-19 07:36:26,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 07:36:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:36:26,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 1650 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 07:36:26,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:36:26,908 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 24642 trivial. 0 not checked. [2023-12-19 07:36:26,908 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:36:26,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152224934] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:36:26,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:36:26,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:36:26,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751608692] [2023-12-19 07:36:26,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:36:26,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 07:36:26,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:36:26,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 07:36:26,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:36:26,952 INFO L87 Difference]: Start difference. First operand has 353 states, 238 states have (on average 1.6470588235294117) internal successors, (392), 239 states have internal predecessors, (392), 112 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) Second operand has 2 states, 2 states have (on average 82.5) internal successors, (165), 2 states have internal predecessors, (165), 2 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 2 states have call successors, (112) [2023-12-19 07:36:27,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:36:27,047 INFO L93 Difference]: Finished difference Result 703 states and 1342 transitions. [2023-12-19 07:36:27,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 07:36:27,054 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 82.5) internal successors, (165), 2 states have internal predecessors, (165), 2 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 2 states have call successors, (112) Word has length 720 [2023-12-19 07:36:27,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:36:27,073 INFO L225 Difference]: With dead ends: 703 [2023-12-19 07:36:27,073 INFO L226 Difference]: Without dead ends: 351 [2023-12-19 07:36:27,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 719 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:36:27,088 INFO L413 NwaCegarLoop]: 605 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, 605 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 [2023-12-19 07:36:27,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 605 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:36:27,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-12-19 07:36:27,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2023-12-19 07:36:27,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 237 states have (on average 1.620253164556962) internal successors, (384), 237 states have internal predecessors, (384), 112 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-19 07:36:27,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 608 transitions. [2023-12-19 07:36:27,193 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 608 transitions. Word has length 720 [2023-12-19 07:36:27,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:36:27,195 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 608 transitions. [2023-12-19 07:36:27,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 82.5) internal successors, (165), 2 states have internal predecessors, (165), 2 states have call successors, (112), 2 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 2 states have call successors, (112) [2023-12-19 07:36:27,195 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 608 transitions. [2023-12-19 07:36:27,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2023-12-19 07:36:27,210 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:36:27,211 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:36:27,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 07:36:27,419 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 [2023-12-19 07:36:27,420 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:36:27,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:36:27,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1781481701, now seen corresponding path program 1 times [2023-12-19 07:36:27,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:36:27,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725119668] [2023-12-19 07:36:27,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:27,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:36:27,547 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:36:27,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [297346410] [2023-12-19 07:36:27,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:27,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:36:27,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:36:27,549 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) [2023-12-19 07:36:27,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 07:36:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:36:27,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 1650 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:36:27,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:36:28,632 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-12-19 07:36:28,632 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:36:28,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:36:28,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725119668] [2023-12-19 07:36:28,632 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:36:28,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297346410] [2023-12-19 07:36:28,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297346410] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:36:28,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:36:28,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:36:28,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251058995] [2023-12-19 07:36:28,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:36:28,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:36:28,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:36:28,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:36:28,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:36:28,637 INFO L87 Difference]: Start difference. First operand 351 states and 608 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-19 07:36:28,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:36:28,951 INFO L93 Difference]: Finished difference Result 1052 states and 1824 transitions. [2023-12-19 07:36:28,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:36:28,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) Word has length 720 [2023-12-19 07:36:28,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:36:28,957 INFO L225 Difference]: With dead ends: 1052 [2023-12-19 07:36:28,957 INFO L226 Difference]: Without dead ends: 702 [2023-12-19 07:36:28,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 717 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:36:28,959 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 296 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:36:28,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 1564 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 07:36:28,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2023-12-19 07:36:29,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 700. [2023-12-19 07:36:29,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 473 states have (on average 1.6194503171247356) internal successors, (766), 473 states have internal predecessors, (766), 224 states have call successors, (224), 2 states have call predecessors, (224), 2 states have return successors, (224), 224 states have call predecessors, (224), 224 states have call successors, (224) [2023-12-19 07:36:29,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1214 transitions. [2023-12-19 07:36:29,019 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1214 transitions. Word has length 720 [2023-12-19 07:36:29,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:36:29,021 INFO L495 AbstractCegarLoop]: Abstraction has 700 states and 1214 transitions. [2023-12-19 07:36:29,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-19 07:36:29,021 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1214 transitions. [2023-12-19 07:36:29,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2023-12-19 07:36:29,026 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:36:29,027 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:36:29,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 07:36:29,235 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 [2023-12-19 07:36:29,236 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:36:29,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:36:29,236 INFO L85 PathProgramCache]: Analyzing trace with hash 436148697, now seen corresponding path program 1 times [2023-12-19 07:36:29,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:36:29,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730231525] [2023-12-19 07:36:29,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:29,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:36:29,296 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:36:29,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [902940132] [2023-12-19 07:36:29,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:29,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:36:29,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:36:29,298 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) [2023-12-19 07:36:29,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 07:36:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:36:29,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 1648 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:36:29,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:36:29,747 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-12-19 07:36:29,747 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:36:29,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:36:29,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730231525] [2023-12-19 07:36:29,748 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:36:29,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902940132] [2023-12-19 07:36:29,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902940132] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:36:29,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:36:29,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:36:29,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460527614] [2023-12-19 07:36:29,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:36:29,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:36:29,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:36:29,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:36:29,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:36:29,750 INFO L87 Difference]: Start difference. First operand 700 states and 1214 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-19 07:36:29,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:36:29,786 INFO L93 Difference]: Finished difference Result 1399 states and 2427 transitions. [2023-12-19 07:36:29,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:36:29,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) Word has length 720 [2023-12-19 07:36:29,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:36:29,791 INFO L225 Difference]: With dead ends: 1399 [2023-12-19 07:36:29,791 INFO L226 Difference]: Without dead ends: 700 [2023-12-19 07:36:29,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 717 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:36:29,793 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 3 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:36:29,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1199 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:36:29,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2023-12-19 07:36:29,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 700. [2023-12-19 07:36:29,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 473 states have (on average 1.6152219873150107) internal successors, (764), 473 states have internal predecessors, (764), 224 states have call successors, (224), 2 states have call predecessors, (224), 2 states have return successors, (224), 224 states have call predecessors, (224), 224 states have call successors, (224) [2023-12-19 07:36:29,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1212 transitions. [2023-12-19 07:36:29,843 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1212 transitions. Word has length 720 [2023-12-19 07:36:29,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:36:29,844 INFO L495 AbstractCegarLoop]: Abstraction has 700 states and 1212 transitions. [2023-12-19 07:36:29,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-19 07:36:29,845 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1212 transitions. [2023-12-19 07:36:29,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2023-12-19 07:36:29,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:36:29,851 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:36:29,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 07:36:30,061 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 [2023-12-19 07:36:30,062 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:36:30,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:36:30,062 INFO L85 PathProgramCache]: Analyzing trace with hash 513049495, now seen corresponding path program 1 times [2023-12-19 07:36:30,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:36:30,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608323449] [2023-12-19 07:36:30,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:30,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:36:30,132 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:36:30,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216372140] [2023-12-19 07:36:30,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:30,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:36:30,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:36:30,134 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) [2023-12-19 07:36:30,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 07:36:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:36:30,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 1646 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 07:36:30,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:36:32,053 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-12-19 07:36:32,054 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:36:32,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:36:32,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608323449] [2023-12-19 07:36:32,054 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:36:32,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216372140] [2023-12-19 07:36:32,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216372140] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:36:32,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:36:32,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:36:32,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307828409] [2023-12-19 07:36:32,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:36:32,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:36:32,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:36:32,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:36:32,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:36:32,057 INFO L87 Difference]: Start difference. First operand 700 states and 1212 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-19 07:36:32,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:36:32,374 INFO L93 Difference]: Finished difference Result 1751 states and 3031 transitions. [2023-12-19 07:36:32,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:36:32,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) Word has length 720 [2023-12-19 07:36:32,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:36:32,380 INFO L225 Difference]: With dead ends: 1751 [2023-12-19 07:36:32,380 INFO L226 Difference]: Without dead ends: 1052 [2023-12-19 07:36:32,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 717 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:36:32,383 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 251 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:36:32,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 1552 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 07:36:32,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2023-12-19 07:36:32,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1050. [2023-12-19 07:36:32,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 710 states have (on average 1.6140845070422536) internal successors, (1146), 710 states have internal predecessors, (1146), 336 states have call successors, (336), 3 states have call predecessors, (336), 3 states have return successors, (336), 336 states have call predecessors, (336), 336 states have call successors, (336) [2023-12-19 07:36:32,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1818 transitions. [2023-12-19 07:36:32,467 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1818 transitions. Word has length 720 [2023-12-19 07:36:32,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:36:32,468 INFO L495 AbstractCegarLoop]: Abstraction has 1050 states and 1818 transitions. [2023-12-19 07:36:32,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-19 07:36:32,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1818 transitions. [2023-12-19 07:36:32,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2023-12-19 07:36:32,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:36:32,474 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:36:32,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 07:36:32,683 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 [2023-12-19 07:36:32,684 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:36:32,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:36:32,684 INFO L85 PathProgramCache]: Analyzing trace with hash 787809109, now seen corresponding path program 1 times [2023-12-19 07:36:32,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:36:32,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512365821] [2023-12-19 07:36:32,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:32,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:36:32,738 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:36:32,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1138861854] [2023-12-19 07:36:32,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:32,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:36:32,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:36:32,754 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) [2023-12-19 07:36:32,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 07:36:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:36:33,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 1644 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:36:33,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:36:33,238 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-12-19 07:36:33,239 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:36:33,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:36:33,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512365821] [2023-12-19 07:36:33,239 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:36:33,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138861854] [2023-12-19 07:36:33,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138861854] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:36:33,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:36:33,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:36:33,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813129231] [2023-12-19 07:36:33,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:36:33,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:36:33,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:36:33,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:36:33,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:36:33,241 INFO L87 Difference]: Start difference. First operand 1050 states and 1818 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-19 07:36:33,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:36:33,295 INFO L93 Difference]: Finished difference Result 2641 states and 4600 transitions. [2023-12-19 07:36:33,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:36:33,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) Word has length 720 [2023-12-19 07:36:33,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:36:33,303 INFO L225 Difference]: With dead ends: 2641 [2023-12-19 07:36:33,303 INFO L226 Difference]: Without dead ends: 1592 [2023-12-19 07:36:33,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 718 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:36:33,307 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 285 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:36:33,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 1276 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:36:33,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2023-12-19 07:36:33,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1587. [2023-12-19 07:36:33,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1587 states, 1190 states have (on average 1.6747899159663866) internal successors, (1993), 1193 states have internal predecessors, (1993), 390 states have call successors, (390), 6 states have call predecessors, (390), 6 states have return successors, (390), 387 states have call predecessors, (390), 390 states have call successors, (390) [2023-12-19 07:36:33,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 2773 transitions. [2023-12-19 07:36:33,398 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 2773 transitions. Word has length 720 [2023-12-19 07:36:33,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:36:33,399 INFO L495 AbstractCegarLoop]: Abstraction has 1587 states and 2773 transitions. [2023-12-19 07:36:33,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-19 07:36:33,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 2773 transitions. [2023-12-19 07:36:33,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2023-12-19 07:36:33,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:36:33,405 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:36:33,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 07:36:33,628 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 [2023-12-19 07:36:33,628 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:36:33,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:36:33,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1583930153, now seen corresponding path program 1 times [2023-12-19 07:36:33,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:36:33,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140476751] [2023-12-19 07:36:33,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:33,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:36:33,704 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:36:33,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1218248478] [2023-12-19 07:36:33,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:33,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:36:33,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:36:33,728 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) [2023-12-19 07:36:33,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 07:36:34,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:36:34,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 1643 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:36:34,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:36:34,160 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-12-19 07:36:34,160 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:36:34,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:36:34,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140476751] [2023-12-19 07:36:34,161 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:36:34,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218248478] [2023-12-19 07:36:34,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218248478] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:36:34,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:36:34,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:36:34,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931093728] [2023-12-19 07:36:34,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:36:34,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:36:34,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:36:34,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:36:34,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:36:34,163 INFO L87 Difference]: Start difference. First operand 1587 states and 2773 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-19 07:36:34,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:36:34,260 INFO L93 Difference]: Finished difference Result 4272 states and 7419 transitions. [2023-12-19 07:36:34,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:36:34,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) Word has length 720 [2023-12-19 07:36:34,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:36:34,272 INFO L225 Difference]: With dead ends: 4272 [2023-12-19 07:36:34,272 INFO L226 Difference]: Without dead ends: 2686 [2023-12-19 07:36:34,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 718 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:36:34,276 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 386 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:36:34,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 1189 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:36:34,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2023-12-19 07:36:34,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2681. [2023-12-19 07:36:34,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2681 states, 1975 states have (on average 1.6430379746835444) internal successors, (3245), 1984 states have internal predecessors, (3245), 693 states have call successors, (693), 12 states have call predecessors, (693), 12 states have return successors, (693), 684 states have call predecessors, (693), 693 states have call successors, (693) [2023-12-19 07:36:34,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2681 states to 2681 states and 4631 transitions. [2023-12-19 07:36:34,431 INFO L78 Accepts]: Start accepts. Automaton has 2681 states and 4631 transitions. Word has length 720 [2023-12-19 07:36:34,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:36:34,431 INFO L495 AbstractCegarLoop]: Abstraction has 2681 states and 4631 transitions. [2023-12-19 07:36:34,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-19 07:36:34,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2681 states and 4631 transitions. [2023-12-19 07:36:34,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2023-12-19 07:36:34,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:36:34,438 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:36:34,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-19 07:36:34,646 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 [2023-12-19 07:36:34,647 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:36:34,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:36:34,647 INFO L85 PathProgramCache]: Analyzing trace with hash 344342549, now seen corresponding path program 1 times [2023-12-19 07:36:34,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:36:34,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209331356] [2023-12-19 07:36:34,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:34,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:36:34,693 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:36:34,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [296983697] [2023-12-19 07:36:34,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:34,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:36:34,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:36:34,695 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) [2023-12-19 07:36:34,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 07:36:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:36:35,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 1640 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:36:35,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:36:35,170 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-12-19 07:36:35,171 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:36:35,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:36:35,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209331356] [2023-12-19 07:36:35,171 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:36:35,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296983697] [2023-12-19 07:36:35,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296983697] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:36:35,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:36:35,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:36:35,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271467969] [2023-12-19 07:36:35,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:36:35,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:36:35,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:36:35,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:36:35,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:36:35,173 INFO L87 Difference]: Start difference. First operand 2681 states and 4631 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-19 07:36:35,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:36:35,281 INFO L93 Difference]: Finished difference Result 7497 states and 12930 transitions. [2023-12-19 07:36:35,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:36:35,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) Word has length 720 [2023-12-19 07:36:35,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:36:35,298 INFO L225 Difference]: With dead ends: 7497 [2023-12-19 07:36:35,298 INFO L226 Difference]: Without dead ends: 4817 [2023-12-19 07:36:35,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 718 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:36:35,305 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 358 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:36:35,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 1376 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:36:35,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4817 states. [2023-12-19 07:36:35,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4817 to 4809. [2023-12-19 07:36:35,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4809 states, 3575 states have (on average 1.6383216783216783) internal successors, (5857), 3596 states have internal predecessors, (5857), 1209 states have call successors, (1209), 24 states have call predecessors, (1209), 24 states have return successors, (1209), 1188 states have call predecessors, (1209), 1209 states have call successors, (1209) [2023-12-19 07:36:35,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4809 states to 4809 states and 8275 transitions. [2023-12-19 07:36:35,599 INFO L78 Accepts]: Start accepts. Automaton has 4809 states and 8275 transitions. Word has length 720 [2023-12-19 07:36:35,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:36:35,599 INFO L495 AbstractCegarLoop]: Abstraction has 4809 states and 8275 transitions. [2023-12-19 07:36:35,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-19 07:36:35,600 INFO L276 IsEmpty]: Start isEmpty. Operand 4809 states and 8275 transitions. [2023-12-19 07:36:35,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2023-12-19 07:36:35,609 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:36:35,609 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:36:35,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 07:36:35,818 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 [2023-12-19 07:36:35,819 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:36:35,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:36:35,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1048847039, now seen corresponding path program 1 times [2023-12-19 07:36:35,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:36:35,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677821147] [2023-12-19 07:36:35,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:35,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:36:35,869 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:36:35,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1689183056] [2023-12-19 07:36:35,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:35,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:36:35,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:36:35,871 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) [2023-12-19 07:36:35,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 07:36:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:36:36,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 1640 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:36:36,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:36:36,290 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-12-19 07:36:36,290 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:36:36,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:36:36,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677821147] [2023-12-19 07:36:36,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:36:36,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689183056] [2023-12-19 07:36:36,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689183056] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:36:36,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:36:36,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:36:36,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426253410] [2023-12-19 07:36:36,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:36:36,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:36:36,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:36:36,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:36:36,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:36:36,292 INFO L87 Difference]: Start difference. First operand 4809 states and 8275 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-19 07:36:36,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:36:36,564 INFO L93 Difference]: Finished difference Result 14425 states and 24823 transitions. [2023-12-19 07:36:36,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:36:36,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) Word has length 721 [2023-12-19 07:36:36,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:36:36,603 INFO L225 Difference]: With dead ends: 14425 [2023-12-19 07:36:36,603 INFO L226 Difference]: Without dead ends: 9617 [2023-12-19 07:36:36,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 719 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:36:36,617 INFO L413 NwaCegarLoop]: 1138 mSDtfsCounter, 592 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:36:36,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 1733 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:36:36,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9617 states. [2023-12-19 07:36:37,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9617 to 9585. [2023-12-19 07:36:37,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9585 states, 7118 states have (on average 1.628547344759764) internal successors, (11592), 7160 states have internal predecessors, (11592), 2418 states have call successors, (2418), 48 states have call predecessors, (2418), 48 states have return successors, (2418), 2376 states have call predecessors, (2418), 2418 states have call successors, (2418) [2023-12-19 07:36:37,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9585 states to 9585 states and 16428 transitions. [2023-12-19 07:36:37,309 INFO L78 Accepts]: Start accepts. Automaton has 9585 states and 16428 transitions. Word has length 721 [2023-12-19 07:36:37,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:36:37,310 INFO L495 AbstractCegarLoop]: Abstraction has 9585 states and 16428 transitions. [2023-12-19 07:36:37,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-19 07:36:37,311 INFO L276 IsEmpty]: Start isEmpty. Operand 9585 states and 16428 transitions. [2023-12-19 07:36:37,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2023-12-19 07:36:37,324 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:36:37,325 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:36:37,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 07:36:37,535 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 [2023-12-19 07:36:37,536 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:36:37,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:36:37,536 INFO L85 PathProgramCache]: Analyzing trace with hash -945297667, now seen corresponding path program 1 times [2023-12-19 07:36:37,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:36:37,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265431249] [2023-12-19 07:36:37,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:37,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:36:37,611 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:36:37,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1622413937] [2023-12-19 07:36:37,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:37,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:36:37,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:36:37,629 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) [2023-12-19 07:36:37,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 07:36:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:36:38,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 07:36:38,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:36:38,765 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-12-19 07:36:38,765 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:36:38,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:36:38,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265431249] [2023-12-19 07:36:38,765 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:36:38,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622413937] [2023-12-19 07:36:38,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622413937] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:36:38,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:36:38,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:36:38,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241200070] [2023-12-19 07:36:38,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:36:38,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:36:38,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:36:38,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:36:38,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:36:38,768 INFO L87 Difference]: Start difference. First operand 9585 states and 16428 transitions. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-19 07:36:40,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:36:40,473 INFO L93 Difference]: Finished difference Result 38365 states and 65735 transitions. [2023-12-19 07:36:40,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 07:36:40,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) Word has length 721 [2023-12-19 07:36:40,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:36:40,588 INFO L225 Difference]: With dead ends: 38365 [2023-12-19 07:36:40,588 INFO L226 Difference]: Without dead ends: 28781 [2023-12-19 07:36:40,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 721 GetRequests, 717 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:36:40,632 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 1879 mSDsluCounter, 1707 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1879 SdHoareTripleChecker+Valid, 2517 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 07:36:40,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1879 Valid, 2517 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 07:36:40,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28781 states. [2023-12-19 07:36:42,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28781 to 28749. [2023-12-19 07:36:42,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28749 states, 21350 states have (on average 1.615175644028103) internal successors, (34484), 21476 states have internal predecessors, (34484), 7254 states have call successors, (7254), 144 states have call predecessors, (7254), 144 states have return successors, (7254), 7128 states have call predecessors, (7254), 7254 states have call successors, (7254) [2023-12-19 07:36:42,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28749 states to 28749 states and 48992 transitions. [2023-12-19 07:36:42,385 INFO L78 Accepts]: Start accepts. Automaton has 28749 states and 48992 transitions. Word has length 721 [2023-12-19 07:36:42,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:36:42,386 INFO L495 AbstractCegarLoop]: Abstraction has 28749 states and 48992 transitions. [2023-12-19 07:36:42,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-19 07:36:42,387 INFO L276 IsEmpty]: Start isEmpty. Operand 28749 states and 48992 transitions. [2023-12-19 07:36:42,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2023-12-19 07:36:42,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:36:42,406 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:36:42,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-19 07:36:42,617 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 [2023-12-19 07:36:42,617 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:36:42,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:36:42,619 INFO L85 PathProgramCache]: Analyzing trace with hash -358491653, now seen corresponding path program 1 times [2023-12-19 07:36:42,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:36:42,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226583033] [2023-12-19 07:36:42,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:42,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:36:42,685 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:36:42,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [130515857] [2023-12-19 07:36:42,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:42,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:36:42,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:36:42,686 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) [2023-12-19 07:36:42,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 07:36:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:36:43,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 1643 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 07:36:43,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:36:44,034 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-12-19 07:36:44,034 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:36:44,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:36:44,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226583033] [2023-12-19 07:36:44,034 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:36:44,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130515857] [2023-12-19 07:36:44,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130515857] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:36:44,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:36:44,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 07:36:44,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749937196] [2023-12-19 07:36:44,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:36:44,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 07:36:44,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:36:44,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 07:36:44,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:36:44,038 INFO L87 Difference]: Start difference. First operand 28749 states and 48992 transitions. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 5 states have internal predecessors, (164), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-19 07:36:46,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:36:46,167 INFO L93 Difference]: Finished difference Result 59649 states and 101663 transitions. [2023-12-19 07:36:46,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 07:36:46,168 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 5 states have internal predecessors, (164), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) Word has length 721 [2023-12-19 07:36:46,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:36:46,273 INFO L225 Difference]: With dead ends: 59649 [2023-12-19 07:36:46,274 INFO L226 Difference]: Without dead ends: 30901 [2023-12-19 07:36:46,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 716 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:36:46,323 INFO L413 NwaCegarLoop]: 808 mSDtfsCounter, 2189 mSDsluCounter, 2425 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 952 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2189 SdHoareTripleChecker+Valid, 3233 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 952 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 07:36:46,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2189 Valid, 3233 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [952 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 07:36:46,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30901 states. [2023-12-19 07:36:48,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30901 to 28749. [2023-12-19 07:36:48,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28749 states, 21350 states have (on average 1.6106791569086651) internal successors, (34388), 21476 states have internal predecessors, (34388), 7254 states have call successors, (7254), 144 states have call predecessors, (7254), 144 states have return successors, (7254), 7128 states have call predecessors, (7254), 7254 states have call successors, (7254) [2023-12-19 07:36:48,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28749 states to 28749 states and 48896 transitions. [2023-12-19 07:36:48,679 INFO L78 Accepts]: Start accepts. Automaton has 28749 states and 48896 transitions. Word has length 721 [2023-12-19 07:36:48,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:36:48,680 INFO L495 AbstractCegarLoop]: Abstraction has 28749 states and 48896 transitions. [2023-12-19 07:36:48,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 5 states have internal predecessors, (164), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-19 07:36:48,680 INFO L276 IsEmpty]: Start isEmpty. Operand 28749 states and 48896 transitions. [2023-12-19 07:36:48,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2023-12-19 07:36:48,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:36:48,699 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:36:48,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 07:36:48,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 07:36:48,908 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:36:48,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:36:48,908 INFO L85 PathProgramCache]: Analyzing trace with hash 814799831, now seen corresponding path program 1 times [2023-12-19 07:36:48,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:36:48,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41942995] [2023-12-19 07:36:48,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:48,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:36:48,955 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:36:48,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1334105889] [2023-12-19 07:36:48,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:48,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:36:48,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:36:48,957 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:36:48,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 07:36:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:36:49,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 1643 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 07:36:49,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:36:49,856 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 10651 proven. 231 refuted. 0 times theorem prover too weak. 13982 trivial. 0 not checked. [2023-12-19 07:36:49,856 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:36:50,340 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 102 proven. 231 refuted. 0 times theorem prover too weak. 24531 trivial. 0 not checked. [2023-12-19 07:36:50,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:36:50,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41942995] [2023-12-19 07:36:50,341 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:36:50,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334105889] [2023-12-19 07:36:50,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334105889] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:36:50,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:36:50,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-19 07:36:50,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132005586] [2023-12-19 07:36:50,341 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:36:50,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 07:36:50,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:36:50,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 07:36:50,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:36:50,343 INFO L87 Difference]: Start difference. First operand 28749 states and 48896 transitions. Second operand has 8 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 2 states have call successors, (189), 2 states have call predecessors, (189), 4 states have return successors, (190), 2 states have call predecessors, (190), 2 states have call successors, (190) [2023-12-19 07:36:53,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:36:53,126 INFO L93 Difference]: Finished difference Result 87325 states and 147622 transitions. [2023-12-19 07:36:53,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 07:36:53,126 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 2 states have call successors, (189), 2 states have call predecessors, (189), 4 states have return successors, (190), 2 states have call predecessors, (190), 2 states have call successors, (190) Word has length 722 [2023-12-19 07:36:53,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:36:53,333 INFO L225 Difference]: With dead ends: 87325 [2023-12-19 07:36:53,333 INFO L226 Difference]: Without dead ends: 58577 [2023-12-19 07:36:53,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1453 GetRequests, 1435 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-12-19 07:36:53,399 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 1213 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1248 SdHoareTripleChecker+Valid, 2384 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 460 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 07:36:53,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1248 Valid, 2384 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [460 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 07:36:53,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58577 states. [2023-12-19 07:36:57,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58577 to 57999. [2023-12-19 07:36:57,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57999 states, 43058 states have (on average 1.6047656649170885) internal successors, (69098), 43310 states have internal predecessors, (69098), 14508 states have call successors, (14508), 432 states have call predecessors, (14508), 432 states have return successors, (14508), 14256 states have call predecessors, (14508), 14508 states have call successors, (14508) [2023-12-19 07:36:57,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57999 states to 57999 states and 98114 transitions. [2023-12-19 07:36:57,690 INFO L78 Accepts]: Start accepts. Automaton has 57999 states and 98114 transitions. Word has length 722 [2023-12-19 07:36:57,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:36:57,691 INFO L495 AbstractCegarLoop]: Abstraction has 57999 states and 98114 transitions. [2023-12-19 07:36:57,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 2 states have call successors, (189), 2 states have call predecessors, (189), 4 states have return successors, (190), 2 states have call predecessors, (190), 2 states have call successors, (190) [2023-12-19 07:36:57,691 INFO L276 IsEmpty]: Start isEmpty. Operand 57999 states and 98114 transitions. [2023-12-19 07:36:57,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 724 [2023-12-19 07:36:57,730 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:36:57,730 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:36:57,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 07:36:57,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 07:36:57,937 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:36:57,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:36:57,938 INFO L85 PathProgramCache]: Analyzing trace with hash -449828506, now seen corresponding path program 1 times [2023-12-19 07:36:57,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:36:57,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889766646] [2023-12-19 07:36:57,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:57,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:36:58,007 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:36:58,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [414765363] [2023-12-19 07:36:58,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:58,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:36:58,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:36:58,035 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:36:58,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 07:36:58,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:36:58,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 1646 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:36:58,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:36:58,914 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 11841 proven. 126 refuted. 0 times theorem prover too weak. 12897 trivial. 0 not checked. [2023-12-19 07:36:58,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:36:59,250 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 207 proven. 126 refuted. 0 times theorem prover too weak. 24531 trivial. 0 not checked. [2023-12-19 07:36:59,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:36:59,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889766646] [2023-12-19 07:36:59,250 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:36:59,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414765363] [2023-12-19 07:36:59,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414765363] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:36:59,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:36:59,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:36:59,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129298085] [2023-12-19 07:36:59,251 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:36:59,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:36:59,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:36:59,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:36:59,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:36:59,253 INFO L87 Difference]: Start difference. First operand 57999 states and 98114 transitions. Second operand has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 2 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 2 states have call predecessors, (155), 2 states have call successors, (155) [2023-12-19 07:37:01,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:37:01,189 INFO L93 Difference]: Finished difference Result 90749 states and 153351 transitions. [2023-12-19 07:37:01,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:37:01,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 2 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 2 states have call predecessors, (155), 2 states have call successors, (155) Word has length 723 [2023-12-19 07:37:01,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:37:01,292 INFO L225 Difference]: With dead ends: 90749 [2023-12-19 07:37:01,292 INFO L226 Difference]: Without dead ends: 32751 [2023-12-19 07:37:01,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1448 GetRequests, 1438 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:37:01,576 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 398 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 07:37:01,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 1213 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 07:37:01,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32751 states. [2023-12-19 07:37:03,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32751 to 32319. [2023-12-19 07:37:03,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32319 states, 23714 states have (on average 1.5976216580922662) internal successors, (37886), 23822 states have internal predecessors, (37886), 8316 states have call successors, (8316), 288 states have call predecessors, (8316), 288 states have return successors, (8316), 8208 states have call predecessors, (8316), 8316 states have call successors, (8316) [2023-12-19 07:37:04,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32319 states to 32319 states and 54518 transitions. [2023-12-19 07:37:04,029 INFO L78 Accepts]: Start accepts. Automaton has 32319 states and 54518 transitions. Word has length 723 [2023-12-19 07:37:04,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:37:04,030 INFO L495 AbstractCegarLoop]: Abstraction has 32319 states and 54518 transitions. [2023-12-19 07:37:04,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 2 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 2 states have call predecessors, (155), 2 states have call successors, (155) [2023-12-19 07:37:04,030 INFO L276 IsEmpty]: Start isEmpty. Operand 32319 states and 54518 transitions. [2023-12-19 07:37:04,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2023-12-19 07:37:04,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:37:04,052 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:37:04,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 07:37:04,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 07:37:04,262 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:37:04,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:37:04,263 INFO L85 PathProgramCache]: Analyzing trace with hash -307885974, now seen corresponding path program 1 times [2023-12-19 07:37:04,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:37:04,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945204213] [2023-12-19 07:37:04,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:04,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:37:04,337 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:37:04,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1748035167] [2023-12-19 07:37:04,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:04,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:37:04,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:37:04,355 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:37:04,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 07:37:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:37:04,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 07:37:04,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:37:05,555 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-12-19 07:37:05,555 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:37:05,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:37:05,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945204213] [2023-12-19 07:37:05,555 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:37:05,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748035167] [2023-12-19 07:37:05,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748035167] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:37:05,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:37:05,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:37:05,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036450531] [2023-12-19 07:37:05,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:37:05,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:37:05,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:37:05,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:37:05,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:37:05,558 INFO L87 Difference]: Start difference. First operand 32319 states and 54518 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-19 07:37:08,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:37:08,287 INFO L93 Difference]: Finished difference Result 117957 states and 199445 transitions. [2023-12-19 07:37:08,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 07:37:08,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) Word has length 724 [2023-12-19 07:37:08,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:37:08,737 INFO L225 Difference]: With dead ends: 117957 [2023-12-19 07:37:08,737 INFO L226 Difference]: Without dead ends: 85639 [2023-12-19 07:37:08,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 720 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:37:08,804 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 507 mSDsluCounter, 2009 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 2855 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 07:37:08,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 2855 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 07:37:08,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85639 states. [2023-12-19 07:37:15,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85639 to 85563. [2023-12-19 07:37:15,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85563 states, 64754 states have (on average 1.6109892825153658) internal successors, (104318), 65114 states have internal predecessors, (104318), 20088 states have call successors, (20088), 720 states have call predecessors, (20088), 720 states have return successors, (20088), 19728 states have call predecessors, (20088), 20088 states have call successors, (20088) [2023-12-19 07:37:15,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85563 states to 85563 states and 144494 transitions. [2023-12-19 07:37:15,450 INFO L78 Accepts]: Start accepts. Automaton has 85563 states and 144494 transitions. Word has length 724 [2023-12-19 07:37:15,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:37:15,451 INFO L495 AbstractCegarLoop]: Abstraction has 85563 states and 144494 transitions. [2023-12-19 07:37:15,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-19 07:37:15,451 INFO L276 IsEmpty]: Start isEmpty. Operand 85563 states and 144494 transitions. [2023-12-19 07:37:15,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2023-12-19 07:37:15,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:37:15,492 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:37:15,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 07:37:15,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 07:37:15,702 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:37:15,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:37:15,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1524039700, now seen corresponding path program 1 times [2023-12-19 07:37:15,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:37:15,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935741482] [2023-12-19 07:37:15,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:15,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:37:15,746 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:37:15,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1145632370] [2023-12-19 07:37:15,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:15,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:37:15,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:37:15,748 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:37:15,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 07:37:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:37:16,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 07:37:16,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:37:17,087 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-12-19 07:37:17,087 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:37:17,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:37:17,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935741482] [2023-12-19 07:37:17,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:37:17,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145632370] [2023-12-19 07:37:17,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145632370] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:37:17,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:37:17,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 07:37:17,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106731278] [2023-12-19 07:37:17,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:37:17,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:37:17,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:37:17,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:37:17,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:37:17,090 INFO L87 Difference]: Start difference. First operand 85563 states and 144494 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-19 07:37:26,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:37:26,104 INFO L93 Difference]: Finished difference Result 332569 states and 560287 transitions. [2023-12-19 07:37:26,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:37:26,105 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) Word has length 724 [2023-12-19 07:37:26,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:37:27,265 INFO L225 Difference]: With dead ends: 332569 [2023-12-19 07:37:27,265 INFO L226 Difference]: Without dead ends: 247007 [2023-12-19 07:37:27,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 720 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-19 07:37:27,499 INFO L413 NwaCegarLoop]: 777 mSDtfsCounter, 1703 mSDsluCounter, 2660 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1703 SdHoareTripleChecker+Valid, 3437 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 07:37:27,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1703 Valid, 3437 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 07:37:27,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247007 states. [2023-12-19 07:37:40,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247007 to 201807. [2023-12-19 07:37:40,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201807 states, 165662 states have (on average 1.650698410015574) internal successors, (273458), 166670 states have internal predecessors, (273458), 34488 states have call successors, (34488), 1656 states have call predecessors, (34488), 1656 states have return successors, (34488), 33480 states have call predecessors, (34488), 34488 states have call successors, (34488) [2023-12-19 07:37:41,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201807 states to 201807 states and 342434 transitions. [2023-12-19 07:37:41,888 INFO L78 Accepts]: Start accepts. Automaton has 201807 states and 342434 transitions. Word has length 724 [2023-12-19 07:37:41,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:37:41,889 INFO L495 AbstractCegarLoop]: Abstraction has 201807 states and 342434 transitions. [2023-12-19 07:37:41,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112) [2023-12-19 07:37:41,889 INFO L276 IsEmpty]: Start isEmpty. Operand 201807 states and 342434 transitions. [2023-12-19 07:37:42,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2023-12-19 07:37:42,010 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:37:42,011 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:37:42,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 07:37:42,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:37:42,222 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:37:42,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:37:42,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1344369258, now seen corresponding path program 1 times [2023-12-19 07:37:42,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:37:42,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772772403] [2023-12-19 07:37:42,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:42,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:37:42,273 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:37:42,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [355064563] [2023-12-19 07:37:42,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:42,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:37:42,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:37:42,275 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:37:42,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 07:37:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:37:42,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 1650 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:37:42,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:37:43,029 INFO L134 CoverageAnalysis]: Checked inductivity of 24864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24864 trivial. 0 not checked. [2023-12-19 07:37:43,029 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:37:43,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:37:43,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772772403] [2023-12-19 07:37:43,030 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:37:43,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355064563] [2023-12-19 07:37:43,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355064563] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:37:43,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:37:43,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:37:43,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178492558] [2023-12-19 07:37:43,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:37:43,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:37:43,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:37:43,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:37:43,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:37:43,032 INFO L87 Difference]: Start difference. First operand 201807 states and 342434 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (112), 1 states have call predecessors, (112), 1 states have return successors, (112), 1 states have call predecessors, (112), 1 states have call successors, (112)