/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-19.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 07:31:22,821 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 07:31:22,889 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 07:31:22,892 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 07:31:22,893 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 07:31:22,915 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 07:31:22,915 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 07:31:22,916 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 07:31:22,916 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 07:31:22,919 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 07:31:22,919 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 07:31:22,920 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 07:31:22,920 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 07:31:22,921 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 07:31:22,921 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 07:31:22,921 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 07:31:22,922 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 07:31:22,922 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 07:31:22,922 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 07:31:22,923 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 07:31:22,923 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 07:31:22,924 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 07:31:22,924 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 07:31:22,924 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 07:31:22,924 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 07:31:22,924 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 07:31:22,924 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 07:31:22,925 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 07:31:22,925 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 07:31:22,925 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 07:31:22,926 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 07:31:22,926 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 07:31:22,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:31:22,927 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 07:31:22,927 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 07:31:22,927 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 07:31:22,927 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 07:31:22,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 07:31:22,927 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 07:31:22,927 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 07:31:22,928 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 07:31:22,928 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 07:31:22,928 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 07:31:22,928 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 07:31:23,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 07:31:23,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 07:31:23,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 07:31:23,187 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 07:31:23,188 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 07:31:23,189 INFO L431 ainManager$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-19.i [2023-12-19 07:31:24,434 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 07:31:24,626 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 07:31:24,626 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-19.i [2023-12-19 07:31:24,642 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4d332c0f/ac9b8ad3e308473dad432e8fcbd96702/FLAGc05681fe7 [2023-12-19 07:31:24,653 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4d332c0f/ac9b8ad3e308473dad432e8fcbd96702 [2023-12-19 07:31:24,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 07:31:24,657 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 07:31:24,658 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 07:31:24,658 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 07:31:24,668 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 07:31:24,669 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:31:24" (1/1) ... [2023-12-19 07:31:24,670 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a54abcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:31:24, skipping insertion in model container [2023-12-19 07:31:24,670 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:31:24" (1/1) ... [2023-12-19 07:31:24,722 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 07:31:24,856 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-19.i[916,929] [2023-12-19 07:31:25,029 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:31:25,046 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 07:31:25,058 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-19.i[916,929] [2023-12-19 07:31:25,135 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:31:25,155 INFO L206 MainTranslator]: Completed translation [2023-12-19 07:31:25,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:31:25 WrapperNode [2023-12-19 07:31:25,155 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 07:31:25,157 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 07:31:25,157 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 07:31:25,157 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 07:31:25,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:31:25" (1/1) ... [2023-12-19 07:31:25,186 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:31:25" (1/1) ... [2023-12-19 07:31:25,274 INFO L138 Inliner]: procedures = 26, calls = 103, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 752 [2023-12-19 07:31:25,274 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 07:31:25,275 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 07:31:25,275 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 07:31:25,275 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 07:31:25,284 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:31:25" (1/1) ... [2023-12-19 07:31:25,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:31:25" (1/1) ... [2023-12-19 07:31:25,322 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:31:25" (1/1) ... [2023-12-19 07:31:25,413 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 07:31:25,413 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:31:25" (1/1) ... [2023-12-19 07:31:25,413 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:31:25" (1/1) ... [2023-12-19 07:31:25,447 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:31:25" (1/1) ... [2023-12-19 07:31:25,452 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:31:25" (1/1) ... [2023-12-19 07:31:25,458 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:31:25" (1/1) ... [2023-12-19 07:31:25,464 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:31:25" (1/1) ... [2023-12-19 07:31:25,476 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 07:31:25,477 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 07:31:25,477 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 07:31:25,477 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 07:31:25,478 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:31:25" (1/1) ... [2023-12-19 07:31:25,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:31:25,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:31:25,503 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 07:31:25,521 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 07:31:25,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 07:31:25,526 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 07:31:25,527 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 07:31:25,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 07:31:25,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 07:31:25,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 07:31:25,661 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 07:31:25,664 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 07:31:26,620 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 07:31:26,679 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 07:31:26,680 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 07:31:26,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:31:26 BoogieIcfgContainer [2023-12-19 07:31:26,680 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 07:31:26,682 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 07:31:26,682 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 07:31:26,685 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 07:31:26,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 07:31:24" (1/3) ... [2023-12-19 07:31:26,686 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c4a7298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:31:26, skipping insertion in model container [2023-12-19 07:31:26,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:31:25" (2/3) ... [2023-12-19 07:31:26,686 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c4a7298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:31:26, skipping insertion in model container [2023-12-19 07:31:26,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:31:26" (3/3) ... [2023-12-19 07:31:26,687 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-19.i [2023-12-19 07:31:26,701 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 07:31:26,701 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 07:31:26,750 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 07:31:26,755 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;@73bf7537, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 07:31:26,755 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 07:31:26,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 285 states, 192 states have (on average 1.671875) internal successors, (321), 193 states have internal predecessors, (321), 90 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-19 07:31:26,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2023-12-19 07:31:26,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:31:26,787 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:31:26,788 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:31:26,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:31:26,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1605833949, now seen corresponding path program 1 times [2023-12-19 07:31:26,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:31:26,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055407986] [2023-12-19 07:31:26,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:26,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:31:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:31:27,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:31:27,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055407986] [2023-12-19 07:31:27,184 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 07:31:27,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628853954] [2023-12-19 07:31:27,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:27,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:31:27,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:31:27,199 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 07:31:27,211 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 07:31:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:31:27,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 07:31:27,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:31:27,762 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 15842 trivial. 0 not checked. [2023-12-19 07:31:27,762 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:31:27,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628853954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:31:27,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:31:27,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:31:27,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603817281] [2023-12-19 07:31:27,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:31:27,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 07:31:27,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:31:27,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 07:31:27,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:31:27,812 INFO L87 Difference]: Start difference. First operand has 285 states, 192 states have (on average 1.671875) internal successors, (321), 193 states have internal predecessors, (321), 90 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) Second operand has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 2 states have call successors, (90) [2023-12-19 07:31:27,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:31:27,905 INFO L93 Difference]: Finished difference Result 562 states and 1080 transitions. [2023-12-19 07:31:27,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 07:31:27,907 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 2 states have call successors, (90) Word has length 590 [2023-12-19 07:31:27,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:31:27,922 INFO L225 Difference]: With dead ends: 562 [2023-12-19 07:31:27,923 INFO L226 Difference]: Without dead ends: 278 [2023-12-19 07:31:27,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 589 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 07:31:27,933 INFO L413 NwaCegarLoop]: 479 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, 479 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 07:31:27,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 479 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:31:27,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-12-19 07:31:28,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2023-12-19 07:31:28,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 186 states have (on average 1.6236559139784945) internal successors, (302), 186 states have internal predecessors, (302), 90 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2023-12-19 07:31:28,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 482 transitions. [2023-12-19 07:31:28,025 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 482 transitions. Word has length 590 [2023-12-19 07:31:28,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:31:28,027 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 482 transitions. [2023-12-19 07:31:28,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 2 states have call successors, (90) [2023-12-19 07:31:28,027 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 482 transitions. [2023-12-19 07:31:28,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2023-12-19 07:31:28,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:31:28,038 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:31:28,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 07:31:28,247 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 07:31:28,248 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:31:28,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:31:28,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1038363507, now seen corresponding path program 1 times [2023-12-19 07:31:28,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:31:28,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414324449] [2023-12-19 07:31:28,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:28,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:31:28,384 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:31:28,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1400927229] [2023-12-19 07:31:28,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:28,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:31:28,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:31:28,400 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 07:31:28,402 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 07:31:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:31:28,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:31:28,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:31:28,830 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2023-12-19 07:31:28,831 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:31:28,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:31:28,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414324449] [2023-12-19 07:31:28,831 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:31:28,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400927229] [2023-12-19 07:31:28,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400927229] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:31:28,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:31:28,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:31:28,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676396235] [2023-12-19 07:31:28,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:31:28,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:31:28,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:31:28,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:31:28,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:31:28,837 INFO L87 Difference]: Start difference. First operand 278 states and 482 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-19 07:31:28,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:31:28,930 INFO L93 Difference]: Finished difference Result 719 states and 1239 transitions. [2023-12-19 07:31:28,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:31:28,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 590 [2023-12-19 07:31:28,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:31:28,936 INFO L225 Difference]: With dead ends: 719 [2023-12-19 07:31:28,937 INFO L226 Difference]: Without dead ends: 442 [2023-12-19 07:31:28,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 588 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 07:31:28,940 INFO L413 NwaCegarLoop]: 660 mSDtfsCounter, 258 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:31:28,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 1124 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:31:28,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2023-12-19 07:31:28,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 439. [2023-12-19 07:31:28,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 288 states have (on average 1.5868055555555556) internal successors, (457), 289 states have internal predecessors, (457), 148 states have call successors, (148), 2 states have call predecessors, (148), 2 states have return successors, (148), 147 states have call predecessors, (148), 148 states have call successors, (148) [2023-12-19 07:31:28,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 753 transitions. [2023-12-19 07:31:28,986 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 753 transitions. Word has length 590 [2023-12-19 07:31:28,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:31:28,988 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 753 transitions. [2023-12-19 07:31:28,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-19 07:31:28,989 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 753 transitions. [2023-12-19 07:31:28,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2023-12-19 07:31:28,994 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:31:28,994 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:31:29,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 07:31:29,203 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 07:31:29,204 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:31:29,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:31:29,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1327051827, now seen corresponding path program 1 times [2023-12-19 07:31:29,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:31:29,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874166185] [2023-12-19 07:31:29,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:29,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:31:29,303 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:31:29,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [683490288] [2023-12-19 07:31:29,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:29,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:31:29,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:31:29,311 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 07:31:29,334 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 07:31:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:31:29,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:31:29,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:31:29,663 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2023-12-19 07:31:29,663 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:31:29,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:31:29,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874166185] [2023-12-19 07:31:29,663 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:31:29,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683490288] [2023-12-19 07:31:29,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683490288] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:31:29,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:31:29,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:31:29,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855356218] [2023-12-19 07:31:29,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:31:29,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:31:29,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:31:29,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:31:29,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:31:29,666 INFO L87 Difference]: Start difference. First operand 439 states and 753 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-19 07:31:29,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:31:29,748 INFO L93 Difference]: Finished difference Result 1305 states and 2237 transitions. [2023-12-19 07:31:29,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:31:29,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 590 [2023-12-19 07:31:29,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:31:29,755 INFO L225 Difference]: With dead ends: 1305 [2023-12-19 07:31:29,755 INFO L226 Difference]: Without dead ends: 867 [2023-12-19 07:31:29,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 588 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 07:31:29,757 INFO L413 NwaCegarLoop]: 885 mSDtfsCounter, 464 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1355 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:31:29,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 1355 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:31:29,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2023-12-19 07:31:29,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 865. [2023-12-19 07:31:29,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 564 states have (on average 1.5691489361702127) internal successors, (885), 566 states have internal predecessors, (885), 296 states have call successors, (296), 4 states have call predecessors, (296), 4 states have return successors, (296), 294 states have call predecessors, (296), 296 states have call successors, (296) [2023-12-19 07:31:29,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1477 transitions. [2023-12-19 07:31:29,858 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1477 transitions. Word has length 590 [2023-12-19 07:31:29,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:31:29,859 INFO L495 AbstractCegarLoop]: Abstraction has 865 states and 1477 transitions. [2023-12-19 07:31:29,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-19 07:31:29,859 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1477 transitions. [2023-12-19 07:31:29,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2023-12-19 07:31:29,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:31:29,865 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:31:29,876 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 07:31:30,073 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 07:31:30,074 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:31:30,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:31:30,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1568538799, now seen corresponding path program 1 times [2023-12-19 07:31:30,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:31:30,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346572152] [2023-12-19 07:31:30,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:30,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:31:30,132 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:31:30,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1286643647] [2023-12-19 07:31:30,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:30,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:31:30,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:31:30,139 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 07:31:30,173 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 07:31:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:31:30,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:31:30,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:31:30,605 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2023-12-19 07:31:30,606 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:31:30,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:31:30,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346572152] [2023-12-19 07:31:30,606 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:31:30,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286643647] [2023-12-19 07:31:30,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286643647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:31:30,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:31:30,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:31:30,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725605846] [2023-12-19 07:31:30,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:31:30,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:31:30,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:31:30,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:31:30,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:31:30,609 INFO L87 Difference]: Start difference. First operand 865 states and 1477 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-19 07:31:30,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:31:30,702 INFO L93 Difference]: Finished difference Result 2319 states and 3914 transitions. [2023-12-19 07:31:30,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:31:30,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 590 [2023-12-19 07:31:30,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:31:30,711 INFO L225 Difference]: With dead ends: 2319 [2023-12-19 07:31:30,711 INFO L226 Difference]: Without dead ends: 1455 [2023-12-19 07:31:30,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 588 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 07:31:30,715 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 263 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:31:30,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 1157 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:31:30,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2023-12-19 07:31:30,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1451. [2023-12-19 07:31:30,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 866 states have (on average 1.4676674364896074) internal successors, (1271), 872 states have internal predecessors, (1271), 576 states have call successors, (576), 8 states have call predecessors, (576), 8 states have return successors, (576), 570 states have call predecessors, (576), 576 states have call successors, (576) [2023-12-19 07:31:30,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 2423 transitions. [2023-12-19 07:31:30,864 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 2423 transitions. Word has length 590 [2023-12-19 07:31:30,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:31:30,865 INFO L495 AbstractCegarLoop]: Abstraction has 1451 states and 2423 transitions. [2023-12-19 07:31:30,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-19 07:31:30,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 2423 transitions. [2023-12-19 07:31:30,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2023-12-19 07:31:30,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:31:30,869 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:31:30,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 07:31:31,078 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 07:31:31,078 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:31:31,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:31:31,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1037484755, now seen corresponding path program 1 times [2023-12-19 07:31:31,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:31:31,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551692806] [2023-12-19 07:31:31,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:31,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:31:31,131 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:31:31,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [381228951] [2023-12-19 07:31:31,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:31,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:31:31,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:31:31,150 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 07:31:31,165 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 07:31:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:31:31,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:31:31,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:31:31,958 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2023-12-19 07:31:31,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:31:31,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:31:31,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551692806] [2023-12-19 07:31:31,958 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:31:31,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381228951] [2023-12-19 07:31:31,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381228951] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:31:31,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:31:31,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:31:31,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396459575] [2023-12-19 07:31:31,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:31:31,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:31:31,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:31:31,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:31:31,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:31:31,960 INFO L87 Difference]: Start difference. First operand 1451 states and 2423 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-19 07:31:32,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:31:32,122 INFO L93 Difference]: Finished difference Result 4351 states and 7267 transitions. [2023-12-19 07:31:32,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:31:32,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 590 [2023-12-19 07:31:32,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:31:32,138 INFO L225 Difference]: With dead ends: 4351 [2023-12-19 07:31:32,139 INFO L226 Difference]: Without dead ends: 2901 [2023-12-19 07:31:32,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 588 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 07:31:32,146 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 211 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:31:32,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 1094 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:31:32,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2023-12-19 07:31:32,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 2899. [2023-12-19 07:31:32,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2899 states, 1730 states have (on average 1.4670520231213873) internal successors, (2538), 1742 states have internal predecessors, (2538), 1152 states have call successors, (1152), 16 states have call predecessors, (1152), 16 states have return successors, (1152), 1140 states have call predecessors, (1152), 1152 states have call successors, (1152) [2023-12-19 07:31:32,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2899 states to 2899 states and 4842 transitions. [2023-12-19 07:31:32,339 INFO L78 Accepts]: Start accepts. Automaton has 2899 states and 4842 transitions. Word has length 590 [2023-12-19 07:31:32,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:31:32,340 INFO L495 AbstractCegarLoop]: Abstraction has 2899 states and 4842 transitions. [2023-12-19 07:31:32,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-19 07:31:32,341 INFO L276 IsEmpty]: Start isEmpty. Operand 2899 states and 4842 transitions. [2023-12-19 07:31:32,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2023-12-19 07:31:32,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:31:32,345 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:31:32,364 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 07:31:32,554 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 07:31:32,555 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:31:32,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:31:32,555 INFO L85 PathProgramCache]: Analyzing trace with hash 967764481, now seen corresponding path program 1 times [2023-12-19 07:31:32,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:31:32,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255375022] [2023-12-19 07:31:32,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:32,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:31:32,604 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:31:32,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [793315872] [2023-12-19 07:31:32,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:32,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:31:32,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:31:32,606 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 07:31:32,631 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 07:31:32,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:31:32,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:31:32,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:31:34,057 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2023-12-19 07:31:34,058 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:31:34,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:31:34,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255375022] [2023-12-19 07:31:34,072 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:31:34,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793315872] [2023-12-19 07:31:34,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793315872] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:31:34,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:31:34,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:31:34,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928836813] [2023-12-19 07:31:34,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:31:34,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:31:34,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:31:34,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:31:34,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:31:34,077 INFO L87 Difference]: Start difference. First operand 2899 states and 4842 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-19 07:31:34,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:31:34,382 INFO L93 Difference]: Finished difference Result 8695 states and 14524 transitions. [2023-12-19 07:31:34,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:31:34,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 591 [2023-12-19 07:31:34,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:31:34,411 INFO L225 Difference]: With dead ends: 8695 [2023-12-19 07:31:34,411 INFO L226 Difference]: Without dead ends: 5797 [2023-12-19 07:31:34,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 589 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 07:31:34,426 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 222 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:31:34,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 944 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:31:34,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5797 states. [2023-12-19 07:31:34,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5797 to 5795. [2023-12-19 07:31:34,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5795 states, 3458 states have (on average 1.4557547715442452) internal successors, (5034), 3482 states have internal predecessors, (5034), 2304 states have call successors, (2304), 32 states have call predecessors, (2304), 32 states have return successors, (2304), 2280 states have call predecessors, (2304), 2304 states have call successors, (2304) [2023-12-19 07:31:34,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5795 states to 5795 states and 9642 transitions. [2023-12-19 07:31:34,889 INFO L78 Accepts]: Start accepts. Automaton has 5795 states and 9642 transitions. Word has length 591 [2023-12-19 07:31:34,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:31:34,890 INFO L495 AbstractCegarLoop]: Abstraction has 5795 states and 9642 transitions. [2023-12-19 07:31:34,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-19 07:31:34,890 INFO L276 IsEmpty]: Start isEmpty. Operand 5795 states and 9642 transitions. [2023-12-19 07:31:34,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2023-12-19 07:31:34,896 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:31:34,896 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:31:34,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 07:31:35,104 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 07:31:35,105 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:31:35,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:31:35,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1287874369, now seen corresponding path program 1 times [2023-12-19 07:31:35,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:31:35,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836346165] [2023-12-19 07:31:35,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:35,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:31:35,146 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:31:35,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [718929303] [2023-12-19 07:31:35,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:35,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:31:35,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:31:35,161 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 07:31:35,185 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 07:31:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:31:35,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 1384 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 07:31:35,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:31:36,779 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2023-12-19 07:31:36,779 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:31:36,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:31:36,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836346165] [2023-12-19 07:31:36,780 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:31:36,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718929303] [2023-12-19 07:31:36,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718929303] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:31:36,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:31:36,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:31:36,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716059703] [2023-12-19 07:31:36,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:31:36,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:31:36,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:31:36,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:31:36,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:31:36,788 INFO L87 Difference]: Start difference. First operand 5795 states and 9642 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-19 07:31:37,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:31:37,263 INFO L93 Difference]: Finished difference Result 12715 states and 21254 transitions. [2023-12-19 07:31:37,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 07:31:37,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 591 [2023-12-19 07:31:37,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:31:37,291 INFO L225 Difference]: With dead ends: 12715 [2023-12-19 07:31:37,291 INFO L226 Difference]: Without dead ends: 6921 [2023-12-19 07:31:37,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 587 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:31:37,308 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 686 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 1889 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 07:31:37,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 1889 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 07:31:37,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6921 states. [2023-12-19 07:31:38,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6921 to 6499. [2023-12-19 07:31:38,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6499 states, 4162 states have (on average 1.513214800576646) internal successors, (6298), 4186 states have internal predecessors, (6298), 2304 states have call successors, (2304), 32 states have call predecessors, (2304), 32 states have return successors, (2304), 2280 states have call predecessors, (2304), 2304 states have call successors, (2304) [2023-12-19 07:31:38,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6499 states to 6499 states and 10906 transitions. [2023-12-19 07:31:38,062 INFO L78 Accepts]: Start accepts. Automaton has 6499 states and 10906 transitions. Word has length 591 [2023-12-19 07:31:38,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:31:38,062 INFO L495 AbstractCegarLoop]: Abstraction has 6499 states and 10906 transitions. [2023-12-19 07:31:38,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-19 07:31:38,063 INFO L276 IsEmpty]: Start isEmpty. Operand 6499 states and 10906 transitions. [2023-12-19 07:31:38,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2023-12-19 07:31:38,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:31:38,069 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:31:38,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-19 07:31:38,277 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 07:31:38,278 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:31:38,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:31:38,278 INFO L85 PathProgramCache]: Analyzing trace with hash 701068355, now seen corresponding path program 1 times [2023-12-19 07:31:38,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:31:38,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548339980] [2023-12-19 07:31:38,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:38,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:31:38,321 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:31:38,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [795080061] [2023-12-19 07:31:38,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:38,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:31:38,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:31:38,323 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 07:31:38,347 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 07:31:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:31:38,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:31:38,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:31:39,830 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2023-12-19 07:31:39,830 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:31:39,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:31:39,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548339980] [2023-12-19 07:31:39,830 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:31:39,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795080061] [2023-12-19 07:31:39,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795080061] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:31:39,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:31:39,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:31:39,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420511523] [2023-12-19 07:31:39,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:31:39,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:31:39,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:31:39,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:31:39,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:31:39,832 INFO L87 Difference]: Start difference. First operand 6499 states and 10906 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-19 07:31:40,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:31:40,416 INFO L93 Difference]: Finished difference Result 18793 states and 31493 transitions. [2023-12-19 07:31:40,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:31:40,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 591 [2023-12-19 07:31:40,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:31:40,491 INFO L225 Difference]: With dead ends: 18793 [2023-12-19 07:31:40,491 INFO L226 Difference]: Without dead ends: 12295 [2023-12-19 07:31:40,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 588 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 07:31:40,517 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 643 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 07:31:40,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 1235 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 07:31:40,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12295 states. [2023-12-19 07:31:41,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12295 to 12291. [2023-12-19 07:31:41,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12291 states, 7618 states have (on average 1.4767655552638488) internal successors, (11250), 7666 states have internal predecessors, (11250), 4608 states have call successors, (4608), 64 states have call predecessors, (4608), 64 states have return successors, (4608), 4560 states have call predecessors, (4608), 4608 states have call successors, (4608) [2023-12-19 07:31:41,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12291 states to 12291 states and 20466 transitions. [2023-12-19 07:31:41,611 INFO L78 Accepts]: Start accepts. Automaton has 12291 states and 20466 transitions. Word has length 591 [2023-12-19 07:31:41,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:31:41,612 INFO L495 AbstractCegarLoop]: Abstraction has 12291 states and 20466 transitions. [2023-12-19 07:31:41,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-19 07:31:41,612 INFO L276 IsEmpty]: Start isEmpty. Operand 12291 states and 20466 transitions. [2023-12-19 07:31:41,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2023-12-19 07:31:41,618 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:31:41,619 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:31:41,631 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 07:31:41,831 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 07:31:41,832 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:31:41,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:31:41,833 INFO L85 PathProgramCache]: Analyzing trace with hash 959233793, now seen corresponding path program 1 times [2023-12-19 07:31:41,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:31:41,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522781561] [2023-12-19 07:31:41,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:41,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:31:41,885 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:31:41,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [586275683] [2023-12-19 07:31:41,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:41,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:31:41,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:31:41,895 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 07:31:41,919 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 07:31:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:31:42,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 1384 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:31:42,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:31:42,550 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 7593 proven. 99 refuted. 0 times theorem prover too weak. 8328 trivial. 0 not checked. [2023-12-19 07:31:42,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:31:42,834 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 168 proven. 99 refuted. 0 times theorem prover too weak. 15753 trivial. 0 not checked. [2023-12-19 07:31:42,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:31:42,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522781561] [2023-12-19 07:31:42,834 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:31:42,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586275683] [2023-12-19 07:31:42,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586275683] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:31:42,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:31:42,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:31:42,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58044887] [2023-12-19 07:31:42,835 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:31:42,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:31:42,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:31:42,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:31:42,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:31:42,837 INFO L87 Difference]: Start difference. First operand 12291 states and 20466 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 2 states have call successors, (123), 2 states have call predecessors, (123), 4 states have return successors, (124), 2 states have call predecessors, (124), 2 states have call successors, (124) [2023-12-19 07:31:43,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:31:43,737 INFO L93 Difference]: Finished difference Result 24965 states and 41251 transitions. [2023-12-19 07:31:43,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 07:31:43,738 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 2 states have call successors, (123), 2 states have call predecessors, (123), 4 states have return successors, (124), 2 states have call predecessors, (124), 2 states have call successors, (124) Word has length 591 [2023-12-19 07:31:43,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:31:43,784 INFO L225 Difference]: With dead ends: 24965 [2023-12-19 07:31:43,784 INFO L226 Difference]: Without dead ends: 12675 [2023-12-19 07:31:43,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1184 GetRequests, 1174 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 07:31:43,820 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 565 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:31:43,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 959 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:31:43,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12675 states. [2023-12-19 07:31:44,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12675 to 12527. [2023-12-19 07:31:44,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12527 states, 7790 states have (on average 1.449550706033376) internal successors, (11292), 7838 states have internal predecessors, (11292), 4608 states have call successors, (4608), 128 states have call predecessors, (4608), 128 states have return successors, (4608), 4560 states have call predecessors, (4608), 4608 states have call successors, (4608) [2023-12-19 07:31:44,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12527 states to 12527 states and 20508 transitions. [2023-12-19 07:31:44,908 INFO L78 Accepts]: Start accepts. Automaton has 12527 states and 20508 transitions. Word has length 591 [2023-12-19 07:31:44,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:31:44,909 INFO L495 AbstractCegarLoop]: Abstraction has 12527 states and 20508 transitions. [2023-12-19 07:31:44,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 2 states have call successors, (123), 2 states have call predecessors, (123), 4 states have return successors, (124), 2 states have call predecessors, (124), 2 states have call successors, (124) [2023-12-19 07:31:44,909 INFO L276 IsEmpty]: Start isEmpty. Operand 12527 states and 20508 transitions. [2023-12-19 07:31:44,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2023-12-19 07:31:44,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:31:44,915 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:31:44,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 07:31:45,124 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 07:31:45,125 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:31:45,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:31:45,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1458434421, now seen corresponding path program 1 times [2023-12-19 07:31:45,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:31:45,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803751848] [2023-12-19 07:31:45,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:45,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:31:45,177 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:31:45,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1756055434] [2023-12-19 07:31:45,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:45,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:31:45,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:31:45,202 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 07:31:45,229 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 07:31:45,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:31:45,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:31:45,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:31:45,909 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 7397 proven. 93 refuted. 0 times theorem prover too weak. 8530 trivial. 0 not checked. [2023-12-19 07:31:45,909 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:31:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 174 proven. 93 refuted. 0 times theorem prover too weak. 15753 trivial. 0 not checked. [2023-12-19 07:31:46,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:31:46,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803751848] [2023-12-19 07:31:46,190 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:31:46,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756055434] [2023-12-19 07:31:46,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756055434] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:31:46,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:31:46,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:31:46,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739874692] [2023-12-19 07:31:46,192 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:31:46,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:31:46,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:31:46,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:31:46,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:31:46,194 INFO L87 Difference]: Start difference. First operand 12527 states and 20508 transitions. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2023-12-19 07:31:47,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:31:47,047 INFO L93 Difference]: Finished difference Result 20277 states and 33235 transitions. [2023-12-19 07:31:47,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 07:31:47,048 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) Word has length 593 [2023-12-19 07:31:47,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:31:47,073 INFO L225 Difference]: With dead ends: 20277 [2023-12-19 07:31:47,073 INFO L226 Difference]: Without dead ends: 7751 [2023-12-19 07:31:47,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1188 GetRequests, 1178 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 07:31:47,099 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 729 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:31:47,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 935 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 07:31:47,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7751 states. [2023-12-19 07:31:47,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7751 to 7687. [2023-12-19 07:31:47,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7687 states, 4838 states have (on average 1.455146754857379) internal successors, (7040), 4854 states have internal predecessors, (7040), 2752 states have call successors, (2752), 96 states have call predecessors, (2752), 96 states have return successors, (2752), 2736 states have call predecessors, (2752), 2752 states have call successors, (2752) [2023-12-19 07:31:47,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7687 states to 7687 states and 12544 transitions. [2023-12-19 07:31:47,780 INFO L78 Accepts]: Start accepts. Automaton has 7687 states and 12544 transitions. Word has length 593 [2023-12-19 07:31:47,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:31:47,781 INFO L495 AbstractCegarLoop]: Abstraction has 7687 states and 12544 transitions. [2023-12-19 07:31:47,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2023-12-19 07:31:47,781 INFO L276 IsEmpty]: Start isEmpty. Operand 7687 states and 12544 transitions. [2023-12-19 07:31:47,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2023-12-19 07:31:47,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:31:47,786 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:31:47,809 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 07:31:47,995 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 07:31:47,995 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:31:47,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:31:47,996 INFO L85 PathProgramCache]: Analyzing trace with hash 843325148, now seen corresponding path program 1 times [2023-12-19 07:31:47,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:31:47,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566355201] [2023-12-19 07:31:47,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:47,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:31:48,045 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:31:48,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1078807732] [2023-12-19 07:31:48,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:48,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:31:48,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:31:48,047 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 07:31:48,069 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 07:31:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:31:48,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 07:31:48,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:31:48,727 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 8079 proven. 126 refuted. 0 times theorem prover too weak. 7815 trivial. 0 not checked. [2023-12-19 07:31:48,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:31:49,067 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 141 proven. 126 refuted. 0 times theorem prover too weak. 15753 trivial. 0 not checked. [2023-12-19 07:31:49,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:31:49,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566355201] [2023-12-19 07:31:49,068 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:31:49,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078807732] [2023-12-19 07:31:49,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078807732] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:31:49,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:31:49,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-19 07:31:49,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589953996] [2023-12-19 07:31:49,069 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:31:49,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 07:31:49,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:31:49,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 07:31:49,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-19 07:31:49,071 INFO L87 Difference]: Start difference. First operand 7687 states and 12544 transitions. Second operand has 10 states, 10 states have (on average 25.6) internal successors, (256), 10 states have internal predecessors, (256), 3 states have call successors, (132), 2 states have call predecessors, (132), 4 states have return successors, (133), 3 states have call predecessors, (133), 3 states have call successors, (133) [2023-12-19 07:31:50,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:31:50,382 INFO L93 Difference]: Finished difference Result 16160 states and 26276 transitions. [2023-12-19 07:31:50,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 07:31:50,383 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 25.6) internal successors, (256), 10 states have internal predecessors, (256), 3 states have call successors, (132), 2 states have call predecessors, (132), 4 states have return successors, (133), 3 states have call predecessors, (133), 3 states have call successors, (133) Word has length 594 [2023-12-19 07:31:50,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:31:50,414 INFO L225 Difference]: With dead ends: 16160 [2023-12-19 07:31:50,414 INFO L226 Difference]: Without dead ends: 8474 [2023-12-19 07:31:50,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1197 GetRequests, 1179 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-12-19 07:31:50,534 INFO L413 NwaCegarLoop]: 679 mSDtfsCounter, 1025 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 1578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 07:31:50,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 1984 Invalid, 1578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 07:31:50,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8474 states. [2023-12-19 07:31:51,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8474 to 7815. [2023-12-19 07:31:51,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7815 states, 4934 states have (on average 1.4381840291852452) internal successors, (7096), 4950 states have internal predecessors, (7096), 2752 states have call successors, (2752), 128 states have call predecessors, (2752), 128 states have return successors, (2752), 2736 states have call predecessors, (2752), 2752 states have call successors, (2752) [2023-12-19 07:31:51,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7815 states to 7815 states and 12600 transitions. [2023-12-19 07:31:51,485 INFO L78 Accepts]: Start accepts. Automaton has 7815 states and 12600 transitions. Word has length 594 [2023-12-19 07:31:51,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:31:51,485 INFO L495 AbstractCegarLoop]: Abstraction has 7815 states and 12600 transitions. [2023-12-19 07:31:51,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 25.6) internal successors, (256), 10 states have internal predecessors, (256), 3 states have call successors, (132), 2 states have call predecessors, (132), 4 states have return successors, (133), 3 states have call predecessors, (133), 3 states have call successors, (133) [2023-12-19 07:31:51,486 INFO L276 IsEmpty]: Start isEmpty. Operand 7815 states and 12600 transitions. [2023-12-19 07:31:51,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2023-12-19 07:31:51,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:31:51,490 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:31:51,503 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 07:31:51,703 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 07:31:51,704 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:31:51,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:31:51,704 INFO L85 PathProgramCache]: Analyzing trace with hash -167792102, now seen corresponding path program 1 times [2023-12-19 07:31:51,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:31:51,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302447400] [2023-12-19 07:31:51,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:51,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:31:51,750 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:31:51,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1260322865] [2023-12-19 07:31:51,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:51,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:31:51,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:31:51,765 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 07:31:51,805 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 07:31:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:31:52,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 07:31:52,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:31:52,840 WARN L876 $PredicateComparison]: unable to prove that (exists ((v_z_4 Int)) (and (<= 0 v_z_4) (<= (+ v_z_4 1) (mod (- 64) v_z_4)) (<= c_~var_1_119~0 v_z_4))) is different from true [2023-12-19 07:31:52,945 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2023-12-19 07:31:52,945 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:31:52,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:31:52,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302447400] [2023-12-19 07:31:52,946 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:31:52,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260322865] [2023-12-19 07:31:52,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260322865] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:31:52,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:31:52,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 07:31:52,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574385377] [2023-12-19 07:31:52,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:31:52,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:31:52,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:31:52,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:31:52,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2023-12-19 07:31:52,948 INFO L87 Difference]: Start difference. First operand 7815 states and 12600 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-19 07:31:53,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:31:53,589 INFO L93 Difference]: Finished difference Result 20419 states and 32906 transitions. [2023-12-19 07:31:53,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 07:31:53,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 594 [2023-12-19 07:31:53,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:31:53,637 INFO L225 Difference]: With dead ends: 20419 [2023-12-19 07:31:53,637 INFO L226 Difference]: Without dead ends: 12595 [2023-12-19 07:31:53,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 590 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2023-12-19 07:31:53,659 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 261 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 750 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 07:31:53,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 1631 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 750 Unchecked, 0.1s Time] [2023-12-19 07:31:53,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12595 states. [2023-12-19 07:31:54,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12595 to 12561. [2023-12-19 07:31:54,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12561 states, 8144 states have (on average 1.4417976424361494) internal successors, (11742), 8192 states have internal predecessors, (11742), 4256 states have call successors, (4256), 160 states have call predecessors, (4256), 160 states have return successors, (4256), 4208 states have call predecessors, (4256), 4256 states have call successors, (4256) [2023-12-19 07:31:54,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12561 states to 12561 states and 20254 transitions. [2023-12-19 07:31:54,763 INFO L78 Accepts]: Start accepts. Automaton has 12561 states and 20254 transitions. Word has length 594 [2023-12-19 07:31:54,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:31:54,764 INFO L495 AbstractCegarLoop]: Abstraction has 12561 states and 20254 transitions. [2023-12-19 07:31:54,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-19 07:31:54,765 INFO L276 IsEmpty]: Start isEmpty. Operand 12561 states and 20254 transitions. [2023-12-19 07:31:54,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2023-12-19 07:31:54,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:31:54,771 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:31:54,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-19 07:31:54,981 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 07:31:54,981 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:31:54,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:31:54,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1447655780, now seen corresponding path program 1 times [2023-12-19 07:31:54,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:31:54,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130999148] [2023-12-19 07:31:54,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:54,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:31:55,071 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:31:55,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [102560590] [2023-12-19 07:31:55,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:31:55,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:31:55,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:31:55,090 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 07:31:55,145 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 07:31:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:31:55,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 07:31:55,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:31:56,444 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2023-12-19 07:31:56,444 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:31:56,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:31:56,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130999148] [2023-12-19 07:31:56,444 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:31:56,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102560590] [2023-12-19 07:31:56,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102560590] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:31:56,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:31:56,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 07:31:56,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742864490] [2023-12-19 07:31:56,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:31:56,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:31:56,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:31:56,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:31:56,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=12, Unknown=1, NotChecked=0, Total=20 [2023-12-19 07:31:56,447 INFO L87 Difference]: Start difference. First operand 12561 states and 20254 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-19 07:31:59,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:31:59,250 INFO L93 Difference]: Finished difference Result 22105 states and 35763 transitions. [2023-12-19 07:31:59,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 07:31:59,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 594 [2023-12-19 07:31:59,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:31:59,278 INFO L225 Difference]: With dead ends: 22105 [2023-12-19 07:31:59,278 INFO L226 Difference]: Without dead ends: 7815 [2023-12-19 07:31:59,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 590 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=18, Unknown=1, NotChecked=0, Total=30 [2023-12-19 07:31:59,313 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 99 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 1843 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 07:31:59,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 1843 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 3 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 07:31:59,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7815 states. [2023-12-19 07:32:00,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7815 to 7815. [2023-12-19 07:32:00,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7815 states, 4934 states have (on average 1.4341305229023105) internal successors, (7076), 4950 states have internal predecessors, (7076), 2752 states have call successors, (2752), 128 states have call predecessors, (2752), 128 states have return successors, (2752), 2736 states have call predecessors, (2752), 2752 states have call successors, (2752) [2023-12-19 07:32:00,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7815 states to 7815 states and 12580 transitions. [2023-12-19 07:32:00,138 INFO L78 Accepts]: Start accepts. Automaton has 7815 states and 12580 transitions. Word has length 594 [2023-12-19 07:32:00,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:32:00,139 INFO L495 AbstractCegarLoop]: Abstraction has 7815 states and 12580 transitions. [2023-12-19 07:32:00,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-19 07:32:00,139 INFO L276 IsEmpty]: Start isEmpty. Operand 7815 states and 12580 transitions. [2023-12-19 07:32:00,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2023-12-19 07:32:00,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:32:00,144 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:32:00,152 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 07:32:00,352 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 07:32:00,352 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:32:00,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:32:00,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1093125148, now seen corresponding path program 1 times [2023-12-19 07:32:00,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:32:00,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316571899] [2023-12-19 07:32:00,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:00,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:32:00,390 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:32:00,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1226980599] [2023-12-19 07:32:00,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:00,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:32:00,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:32:00,391 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 07:32:00,394 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 07:32:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:32:00,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:32:00,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:32:00,896 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 2247 proven. 18 refuted. 0 times theorem prover too weak. 13755 trivial. 0 not checked. [2023-12-19 07:32:00,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:32:01,141 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 249 proven. 18 refuted. 0 times theorem prover too weak. 15753 trivial. 0 not checked. [2023-12-19 07:32:01,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:32:01,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316571899] [2023-12-19 07:32:01,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:32:01,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226980599] [2023-12-19 07:32:01,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226980599] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:32:01,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:32:01,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:32:01,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128680510] [2023-12-19 07:32:01,145 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:32:01,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:32:01,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:32:01,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:32:01,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:32:01,146 INFO L87 Difference]: Start difference. First operand 7815 states and 12580 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2023-12-19 07:32:01,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:32:01,717 INFO L93 Difference]: Finished difference Result 12837 states and 20813 transitions. [2023-12-19 07:32:01,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:32:01,718 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) Word has length 594 [2023-12-19 07:32:01,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:32:01,732 INFO L225 Difference]: With dead ends: 12837 [2023-12-19 07:32:01,732 INFO L226 Difference]: Without dead ends: 5023 [2023-12-19 07:32:01,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1190 GetRequests, 1180 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 07:32:01,748 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 307 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:32:01,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 916 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:32:01,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5023 states. [2023-12-19 07:32:02,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5023 to 4959. [2023-12-19 07:32:02,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4959 states, 3438 states have (on average 1.5183246073298429) internal successors, (5220), 3438 states have internal predecessors, (5220), 1440 states have call successors, (1440), 80 states have call predecessors, (1440), 80 states have return successors, (1440), 1440 states have call predecessors, (1440), 1440 states have call successors, (1440) [2023-12-19 07:32:02,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4959 states to 4959 states and 8100 transitions. [2023-12-19 07:32:02,025 INFO L78 Accepts]: Start accepts. Automaton has 4959 states and 8100 transitions. Word has length 594 [2023-12-19 07:32:02,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:32:02,029 INFO L495 AbstractCegarLoop]: Abstraction has 4959 states and 8100 transitions. [2023-12-19 07:32:02,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2023-12-19 07:32:02,029 INFO L276 IsEmpty]: Start isEmpty. Operand 4959 states and 8100 transitions. [2023-12-19 07:32:02,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2023-12-19 07:32:02,033 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:32:02,033 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:32:02,044 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 07:32:02,243 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 07:32:02,244 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:32:02,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:32:02,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1581354462, now seen corresponding path program 1 times [2023-12-19 07:32:02,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:32:02,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951111956] [2023-12-19 07:32:02,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:02,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:32:02,349 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:32:02,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [876794585] [2023-12-19 07:32:02,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:02,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:32:02,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:32:02,351 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 07:32:02,384 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 07:32:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:32:02,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 1384 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 07:32:02,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:32:02,807 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2023-12-19 07:32:02,807 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:32:02,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:32:02,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951111956] [2023-12-19 07:32:02,808 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:32:02,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876794585] [2023-12-19 07:32:02,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876794585] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:32:02,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:32:02,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 07:32:02,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490598075] [2023-12-19 07:32:02,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:32:02,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:32:02,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:32:02,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:32:02,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:32:02,810 INFO L87 Difference]: Start difference. First operand 4959 states and 8100 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-19 07:32:03,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:32:03,856 INFO L93 Difference]: Finished difference Result 19865 states and 32478 transitions. [2023-12-19 07:32:03,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 07:32:03,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 594 [2023-12-19 07:32:03,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:32:03,908 INFO L225 Difference]: With dead ends: 19865 [2023-12-19 07:32:03,908 INFO L226 Difference]: Without dead ends: 14907 [2023-12-19 07:32:03,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 591 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:32:03,928 INFO L413 NwaCegarLoop]: 885 mSDtfsCounter, 1324 mSDsluCounter, 1875 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 2760 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:32:03,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1324 Valid, 2760 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 07:32:03,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14907 states. [2023-12-19 07:32:04,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14907 to 14861. [2023-12-19 07:32:04,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14861 states, 10300 states have (on average 1.5170873786407768) internal successors, (15626), 10300 states have internal predecessors, (15626), 4320 states have call successors, (4320), 240 states have call predecessors, (4320), 240 states have return successors, (4320), 4320 states have call predecessors, (4320), 4320 states have call successors, (4320) [2023-12-19 07:32:04,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14861 states to 14861 states and 24266 transitions. [2023-12-19 07:32:04,802 INFO L78 Accepts]: Start accepts. Automaton has 14861 states and 24266 transitions. Word has length 594 [2023-12-19 07:32:04,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:32:04,803 INFO L495 AbstractCegarLoop]: Abstraction has 14861 states and 24266 transitions. [2023-12-19 07:32:04,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-19 07:32:04,803 INFO L276 IsEmpty]: Start isEmpty. Operand 14861 states and 24266 transitions. [2023-12-19 07:32:04,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2023-12-19 07:32:04,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:32:04,808 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:32:04,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 07:32:05,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 07:32:05,018 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:32:05,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:32:05,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1136042574, now seen corresponding path program 1 times [2023-12-19 07:32:05,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:32:05,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686266758] [2023-12-19 07:32:05,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:05,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:32:05,073 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:32:05,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1475451574] [2023-12-19 07:32:05,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:05,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:32:05,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:32:05,089 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:32:05,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 07:32:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:32:05,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 07:32:05,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:32:05,985 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2023-12-19 07:32:05,985 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:32:05,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:32:05,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686266758] [2023-12-19 07:32:05,986 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:32:05,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475451574] [2023-12-19 07:32:05,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475451574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:32:05,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:32:05,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:32:05,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832781887] [2023-12-19 07:32:05,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:32:05,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:32:05,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:32:05,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:32:05,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:32:05,989 INFO L87 Difference]: Start difference. First operand 14861 states and 24266 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-19 07:32:07,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:32:07,282 INFO L93 Difference]: Finished difference Result 32285 states and 52733 transitions. [2023-12-19 07:32:07,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 07:32:07,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 594 [2023-12-19 07:32:07,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:32:07,327 INFO L225 Difference]: With dead ends: 32285 [2023-12-19 07:32:07,327 INFO L226 Difference]: Without dead ends: 19903 [2023-12-19 07:32:07,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 590 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:32:07,350 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 1117 mSDsluCounter, 2144 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 2699 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:32:07,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 2699 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 07:32:07,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19903 states. [2023-12-19 07:32:08,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19903 to 12393. [2023-12-19 07:32:08,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12393 states, 8592 states have (on average 1.5173417132216014) internal successors, (13037), 8592 states have internal predecessors, (13037), 3600 states have call successors, (3600), 200 states have call predecessors, (3600), 200 states have return successors, (3600), 3600 states have call predecessors, (3600), 3600 states have call successors, (3600) [2023-12-19 07:32:08,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12393 states to 12393 states and 20237 transitions. [2023-12-19 07:32:08,469 INFO L78 Accepts]: Start accepts. Automaton has 12393 states and 20237 transitions. Word has length 594 [2023-12-19 07:32:08,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:32:08,470 INFO L495 AbstractCegarLoop]: Abstraction has 12393 states and 20237 transitions. [2023-12-19 07:32:08,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-19 07:32:08,470 INFO L276 IsEmpty]: Start isEmpty. Operand 12393 states and 20237 transitions. [2023-12-19 07:32:08,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2023-12-19 07:32:08,475 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:32:08,475 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:32:08,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 07:32:08,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 07:32:08,684 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:32:08,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:32:08,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1843920998, now seen corresponding path program 1 times [2023-12-19 07:32:08,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:32:08,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950359070] [2023-12-19 07:32:08,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:08,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:32:08,722 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:32:08,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [780113447] [2023-12-19 07:32:08,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:08,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:32:08,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:32:08,723 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:32:08,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 07:32:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:32:09,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 07:32:09,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:32:09,178 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2023-12-19 07:32:09,178 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:32:09,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:32:09,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950359070] [2023-12-19 07:32:09,179 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:32:09,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780113447] [2023-12-19 07:32:09,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780113447] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:32:09,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:32:09,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:32:09,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288966831] [2023-12-19 07:32:09,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:32:09,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:32:09,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:32:09,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:32:09,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:32:09,180 INFO L87 Difference]: Start difference. First operand 12393 states and 20237 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-19 07:32:11,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:32:11,046 INFO L93 Difference]: Finished difference Result 43979 states and 72022 transitions. [2023-12-19 07:32:11,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 07:32:11,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 595 [2023-12-19 07:32:11,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:32:11,129 INFO L225 Difference]: With dead ends: 43979 [2023-12-19 07:32:11,129 INFO L226 Difference]: Without dead ends: 31587 [2023-12-19 07:32:11,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 593 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 07:32:11,234 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 898 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 1815 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 07:32:11,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 1815 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 07:32:11,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31587 states. [2023-12-19 07:32:13,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31587 to 31223. [2023-12-19 07:32:13,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31223 states, 22382 states have (on average 1.5152354570637119) internal successors, (33914), 22462 states have internal predecessors, (33914), 8360 states have call successors, (8360), 480 states have call predecessors, (8360), 480 states have return successors, (8360), 8280 states have call predecessors, (8360), 8360 states have call successors, (8360) [2023-12-19 07:32:13,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31223 states to 31223 states and 50634 transitions. [2023-12-19 07:32:13,733 INFO L78 Accepts]: Start accepts. Automaton has 31223 states and 50634 transitions. Word has length 595 [2023-12-19 07:32:13,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:32:13,733 INFO L495 AbstractCegarLoop]: Abstraction has 31223 states and 50634 transitions. [2023-12-19 07:32:13,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-19 07:32:13,734 INFO L276 IsEmpty]: Start isEmpty. Operand 31223 states and 50634 transitions. [2023-12-19 07:32:13,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2023-12-19 07:32:13,742 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:32:13,743 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:32:13,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 07:32:13,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 07:32:13,957 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:32:13,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:32:13,957 INFO L85 PathProgramCache]: Analyzing trace with hash -716941848, now seen corresponding path program 1 times [2023-12-19 07:32:13,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:32:13,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375965416] [2023-12-19 07:32:13,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:13,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:32:14,003 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:32:14,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [993090836] [2023-12-19 07:32:14,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:14,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:32:14,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:32:14,024 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:32:14,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 07:32:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:32:14,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 07:32:14,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:32:14,636 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2023-12-19 07:32:14,636 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:32:14,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:32:14,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375965416] [2023-12-19 07:32:14,637 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:32:14,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993090836] [2023-12-19 07:32:14,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993090836] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:32:14,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:32:14,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 07:32:14,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507201505] [2023-12-19 07:32:14,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:32:14,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:32:14,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:32:14,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:32:14,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:32:14,638 INFO L87 Difference]: Start difference. First operand 31223 states and 50634 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-19 07:32:16,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:32:16,546 INFO L93 Difference]: Finished difference Result 56257 states and 91275 transitions. [2023-12-19 07:32:16,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:32:16,547 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 595 [2023-12-19 07:32:16,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:32:16,618 INFO L225 Difference]: With dead ends: 56257 [2023-12-19 07:32:16,618 INFO L226 Difference]: Without dead ends: 31279 [2023-12-19 07:32:16,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 592 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:32:16,663 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 559 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:32:16,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 729 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 07:32:16,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31279 states. [2023-12-19 07:32:18,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31279 to 18763. [2023-12-19 07:32:18,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18763 states, 13458 states have (on average 1.5133006390251151) internal successors, (20366), 13506 states have internal predecessors, (20366), 5016 states have call successors, (5016), 288 states have call predecessors, (5016), 288 states have return successors, (5016), 4968 states have call predecessors, (5016), 5016 states have call successors, (5016) [2023-12-19 07:32:18,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18763 states to 18763 states and 30398 transitions. [2023-12-19 07:32:18,885 INFO L78 Accepts]: Start accepts. Automaton has 18763 states and 30398 transitions. Word has length 595 [2023-12-19 07:32:18,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:32:18,886 INFO L495 AbstractCegarLoop]: Abstraction has 18763 states and 30398 transitions. [2023-12-19 07:32:18,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-19 07:32:18,886 INFO L276 IsEmpty]: Start isEmpty. Operand 18763 states and 30398 transitions. [2023-12-19 07:32:18,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2023-12-19 07:32:18,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:32:18,894 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:32:18,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 07:32:19,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 07:32:19,101 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:32:19,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:32:19,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1494416566, now seen corresponding path program 1 times [2023-12-19 07:32:19,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:32:19,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247267085] [2023-12-19 07:32:19,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:19,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:32:19,167 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:32:19,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1555376621] [2023-12-19 07:32:19,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:19,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:32:19,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:32:19,176 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:32:19,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 07:32:19,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:32:19,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 07:32:19,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:32:20,084 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 8099 proven. 132 refuted. 0 times theorem prover too weak. 7789 trivial. 0 not checked. [2023-12-19 07:32:20,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:32:20,451 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 135 proven. 132 refuted. 0 times theorem prover too weak. 15753 trivial. 0 not checked. [2023-12-19 07:32:20,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:32:20,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247267085] [2023-12-19 07:32:20,452 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:32:20,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555376621] [2023-12-19 07:32:20,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555376621] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:32:20,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:32:20,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-19 07:32:20,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647011861] [2023-12-19 07:32:20,453 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:32:20,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 07:32:20,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:32:20,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 07:32:20,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:32:20,456 INFO L87 Difference]: Start difference. First operand 18763 states and 30398 transitions. Second operand has 12 states, 12 states have (on average 19.75) internal successors, (237), 12 states have internal predecessors, (237), 3 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 3 states have call predecessors, (135), 3 states have call successors, (135) [2023-12-19 07:32:24,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:32:24,921 INFO L93 Difference]: Finished difference Result 51081 states and 81179 transitions. [2023-12-19 07:32:24,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-19 07:32:24,922 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.75) internal successors, (237), 12 states have internal predecessors, (237), 3 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 3 states have call predecessors, (135), 3 states have call successors, (135) Word has length 595 [2023-12-19 07:32:24,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:32:25,030 INFO L225 Difference]: With dead ends: 51081 [2023-12-19 07:32:25,030 INFO L226 Difference]: Without dead ends: 38563 [2023-12-19 07:32:25,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1224 GetRequests, 1183 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=534, Invalid=1272, Unknown=0, NotChecked=0, Total=1806 [2023-12-19 07:32:25,063 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 2334 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 1753 mSolverCounterSat, 1300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2424 SdHoareTripleChecker+Valid, 2285 SdHoareTripleChecker+Invalid, 3053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1300 IncrementalHoareTripleChecker+Valid, 1753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 07:32:25,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2424 Valid, 2285 Invalid, 3053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1300 Valid, 1753 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 07:32:25,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38563 states. [2023-12-19 07:32:27,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38563 to 26015. [2023-12-19 07:32:27,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26015 states, 19086 states have (on average 1.510845646023263) internal successors, (28836), 19182 states have internal predecessors, (28836), 6560 states have call successors, (6560), 368 states have call predecessors, (6560), 368 states have return successors, (6560), 6464 states have call predecessors, (6560), 6560 states have call successors, (6560) [2023-12-19 07:32:27,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26015 states to 26015 states and 41956 transitions. [2023-12-19 07:32:27,789 INFO L78 Accepts]: Start accepts. Automaton has 26015 states and 41956 transitions. Word has length 595 [2023-12-19 07:32:27,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:32:27,790 INFO L495 AbstractCegarLoop]: Abstraction has 26015 states and 41956 transitions. [2023-12-19 07:32:27,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.75) internal successors, (237), 12 states have internal predecessors, (237), 3 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 3 states have call predecessors, (135), 3 states have call successors, (135) [2023-12-19 07:32:27,790 INFO L276 IsEmpty]: Start isEmpty. Operand 26015 states and 41956 transitions. [2023-12-19 07:32:27,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2023-12-19 07:32:27,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:32:27,798 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:32:27,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-19 07:32:28,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:32:28,007 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:32:28,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:32:28,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1975496824, now seen corresponding path program 1 times [2023-12-19 07:32:28,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:32:28,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894108488] [2023-12-19 07:32:28,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:28,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:32:28,055 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:32:28,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1371676459] [2023-12-19 07:32:28,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:28,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:32:28,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:32:28,057 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:32:28,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 07:32:28,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:32:28,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 07:32:28,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:32:29,378 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 8099 proven. 132 refuted. 0 times theorem prover too weak. 7789 trivial. 0 not checked. [2023-12-19 07:32:29,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:32:29,743 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 135 proven. 132 refuted. 0 times theorem prover too weak. 15753 trivial. 0 not checked. [2023-12-19 07:32:29,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:32:29,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894108488] [2023-12-19 07:32:29,744 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:32:29,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371676459] [2023-12-19 07:32:29,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371676459] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:32:29,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:32:29,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-12-19 07:32:29,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94744492] [2023-12-19 07:32:29,745 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:32:29,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 07:32:29,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:32:29,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 07:32:29,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-19 07:32:29,747 INFO L87 Difference]: Start difference. First operand 26015 states and 41956 transitions. Second operand has 10 states, 10 states have (on average 27.0) internal successors, (270), 10 states have internal predecessors, (270), 4 states have call successors, (180), 3 states have call predecessors, (180), 5 states have return successors, (180), 4 states have call predecessors, (180), 4 states have call successors, (180) [2023-12-19 07:32:34,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:32:34,992 INFO L93 Difference]: Finished difference Result 85351 states and 137116 transitions. [2023-12-19 07:32:34,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 07:32:34,993 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 27.0) internal successors, (270), 10 states have internal predecessors, (270), 4 states have call successors, (180), 3 states have call predecessors, (180), 5 states have return successors, (180), 4 states have call predecessors, (180), 4 states have call successors, (180) Word has length 595 [2023-12-19 07:32:34,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:32:35,173 INFO L225 Difference]: With dead ends: 85351 [2023-12-19 07:32:35,173 INFO L226 Difference]: Without dead ends: 59337 [2023-12-19 07:32:35,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1192 GetRequests, 1180 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-12-19 07:32:35,237 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 1413 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 1483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:32:35,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1547 Valid, 1747 Invalid, 1483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 07:32:35,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59337 states. [2023-12-19 07:32:39,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59337 to 43379. [2023-12-19 07:32:39,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43379 states, 32274 states have (on average 1.5243849538328067) internal successors, (49198), 32418 states have internal predecessors, (49198), 10496 states have call successors, (10496), 608 states have call predecessors, (10496), 608 states have return successors, (10496), 10352 states have call predecessors, (10496), 10496 states have call successors, (10496) [2023-12-19 07:32:39,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43379 states to 43379 states and 70190 transitions. [2023-12-19 07:32:39,959 INFO L78 Accepts]: Start accepts. Automaton has 43379 states and 70190 transitions. Word has length 595 [2023-12-19 07:32:39,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:32:39,960 INFO L495 AbstractCegarLoop]: Abstraction has 43379 states and 70190 transitions. [2023-12-19 07:32:39,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 27.0) internal successors, (270), 10 states have internal predecessors, (270), 4 states have call successors, (180), 3 states have call predecessors, (180), 5 states have return successors, (180), 4 states have call predecessors, (180), 4 states have call successors, (180) [2023-12-19 07:32:39,960 INFO L276 IsEmpty]: Start isEmpty. Operand 43379 states and 70190 transitions. [2023-12-19 07:32:39,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2023-12-19 07:32:39,970 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:32:39,970 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:32:39,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-19 07:32:40,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:32:40,180 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:32:40,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:32:40,181 INFO L85 PathProgramCache]: Analyzing trace with hash -574649926, now seen corresponding path program 1 times [2023-12-19 07:32:40,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:32:40,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959134189] [2023-12-19 07:32:40,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:40,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:32:40,220 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:32:40,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1571344844] [2023-12-19 07:32:40,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:32:40,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:32:40,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:32:40,221 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:32:40,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-19 07:32:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:32:40,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 07:32:40,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:32:42,324 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 10004 proven. 324 refuted. 0 times theorem prover too weak. 5692 trivial. 0 not checked. [2023-12-19 07:32:42,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:32:43,378 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 204 proven. 327 refuted. 0 times theorem prover too weak. 15489 trivial. 0 not checked. [2023-12-19 07:32:43,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:32:43,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959134189] [2023-12-19 07:32:43,379 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:32:43,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571344844] [2023-12-19 07:32:43,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571344844] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:32:43,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:32:43,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 21 [2023-12-19 07:32:43,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658905458] [2023-12-19 07:32:43,379 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:32:43,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-19 07:32:43,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:32:43,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-19 07:32:43,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2023-12-19 07:32:43,382 INFO L87 Difference]: Start difference. First operand 43379 states and 70190 transitions. Second operand has 21 states, 21 states have (on average 13.285714285714286) internal successors, (279), 21 states have internal predecessors, (279), 6 states have call successors, (180), 4 states have call predecessors, (180), 8 states have return successors, (180), 6 states have call predecessors, (180), 6 states have call successors, (180) [2023-12-19 07:32:54,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:32:54,572 INFO L93 Difference]: Finished difference Result 116731 states and 185222 transitions. [2023-12-19 07:32:54,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-19 07:32:54,573 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 13.285714285714286) internal successors, (279), 21 states have internal predecessors, (279), 6 states have call successors, (180), 4 states have call predecessors, (180), 8 states have return successors, (180), 6 states have call predecessors, (180), 6 states have call successors, (180) Word has length 595 [2023-12-19 07:32:54,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:32:54,975 INFO L225 Difference]: With dead ends: 116731 [2023-12-19 07:32:54,975 INFO L226 Difference]: Without dead ends: 90717 [2023-12-19 07:32:55,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1255 GetRequests, 1182 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2008 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1573, Invalid=3977, Unknown=0, NotChecked=0, Total=5550 [2023-12-19 07:32:55,041 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 5963 mSDsluCounter, 4019 mSDsCounter, 0 mSdLazyCounter, 2920 mSolverCounterSat, 2679 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6010 SdHoareTripleChecker+Valid, 4550 SdHoareTripleChecker+Invalid, 5599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2679 IncrementalHoareTripleChecker+Valid, 2920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 07:32:55,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6010 Valid, 4550 Invalid, 5599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2679 Valid, 2920 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 07:32:55,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90717 states. [2023-12-19 07:33:00,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90717 to 57159. [2023-12-19 07:33:00,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57159 states, 44230 states have (on average 1.5365588966764638) internal successors, (67962), 44462 states have internal predecessors, (67962), 11992 states have call successors, (11992), 936 states have call predecessors, (11992), 936 states have return successors, (11992), 11760 states have call predecessors, (11992), 11992 states have call successors, (11992) [2023-12-19 07:33:00,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57159 states to 57159 states and 91946 transitions. [2023-12-19 07:33:00,335 INFO L78 Accepts]: Start accepts. Automaton has 57159 states and 91946 transitions. Word has length 595 [2023-12-19 07:33:00,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:33:00,336 INFO L495 AbstractCegarLoop]: Abstraction has 57159 states and 91946 transitions. [2023-12-19 07:33:00,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 13.285714285714286) internal successors, (279), 21 states have internal predecessors, (279), 6 states have call successors, (180), 4 states have call predecessors, (180), 8 states have return successors, (180), 6 states have call predecessors, (180), 6 states have call successors, (180) [2023-12-19 07:33:00,336 INFO L276 IsEmpty]: Start isEmpty. Operand 57159 states and 91946 transitions. [2023-12-19 07:33:00,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2023-12-19 07:33:00,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:33:00,345 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:33:00,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-19 07:33:00,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:00,555 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:33:00,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:33:00,555 INFO L85 PathProgramCache]: Analyzing trace with hash 2111243695, now seen corresponding path program 1 times [2023-12-19 07:33:00,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:33:00,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880163166] [2023-12-19 07:33:00,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:00,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:33:00,608 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:33:00,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [553398879] [2023-12-19 07:33:00,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:00,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:00,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:33:00,626 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:33:00,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-19 07:33:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:33:01,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 07:33:01,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:33:01,576 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 8027 proven. 120 refuted. 0 times theorem prover too weak. 7873 trivial. 0 not checked. [2023-12-19 07:33:01,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:33:01,876 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 147 proven. 120 refuted. 0 times theorem prover too weak. 15753 trivial. 0 not checked. [2023-12-19 07:33:01,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:33:01,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880163166] [2023-12-19 07:33:01,876 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:33:01,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553398879] [2023-12-19 07:33:01,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553398879] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:33:01,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:33:01,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-19 07:33:01,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592714579] [2023-12-19 07:33:01,877 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:33:01,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 07:33:01,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:33:01,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 07:33:01,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-19 07:33:01,879 INFO L87 Difference]: Start difference. First operand 57159 states and 91946 transitions. Second operand has 10 states, 10 states have (on average 19.0) internal successors, (190), 10 states have internal predecessors, (190), 3 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (131), 3 states have call predecessors, (131), 3 states have call successors, (131) [2023-12-19 07:33:07,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:33:07,198 INFO L93 Difference]: Finished difference Result 116077 states and 185731 transitions. [2023-12-19 07:33:07,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:33:07,200 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 19.0) internal successors, (190), 10 states have internal predecessors, (190), 3 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (131), 3 states have call predecessors, (131), 3 states have call successors, (131) Word has length 596 [2023-12-19 07:33:07,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:33:07,380 INFO L225 Difference]: With dead ends: 116077 [2023-12-19 07:33:07,381 INFO L226 Difference]: Without dead ends: 58919 [2023-12-19 07:33:07,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1195 GetRequests, 1182 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-12-19 07:33:07,482 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 307 mSDsluCounter, 1281 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:33:07,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 1648 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 07:33:07,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58919 states. [2023-12-19 07:33:12,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58919 to 57559. [2023-12-19 07:33:12,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57559 states, 44566 states have (on average 1.5325135753713592) internal successors, (68298), 44798 states have internal predecessors, (68298), 11992 states have call successors, (11992), 1000 states have call predecessors, (11992), 1000 states have return successors, (11992), 11760 states have call predecessors, (11992), 11992 states have call successors, (11992) [2023-12-19 07:33:12,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57559 states to 57559 states and 92282 transitions. [2023-12-19 07:33:12,979 INFO L78 Accepts]: Start accepts. Automaton has 57559 states and 92282 transitions. Word has length 596 [2023-12-19 07:33:12,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:33:12,979 INFO L495 AbstractCegarLoop]: Abstraction has 57559 states and 92282 transitions. [2023-12-19 07:33:12,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.0) internal successors, (190), 10 states have internal predecessors, (190), 3 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (131), 3 states have call predecessors, (131), 3 states have call successors, (131) [2023-12-19 07:33:12,980 INFO L276 IsEmpty]: Start isEmpty. Operand 57559 states and 92282 transitions. [2023-12-19 07:33:12,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2023-12-19 07:33:12,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:33:12,992 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:33:13,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-19 07:33:13,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:13,203 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:33:13,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:33:13,204 INFO L85 PathProgramCache]: Analyzing trace with hash -858867407, now seen corresponding path program 1 times [2023-12-19 07:33:13,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:33:13,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081301221] [2023-12-19 07:33:13,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:13,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:33:13,293 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:33:13,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2007961156] [2023-12-19 07:33:13,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:13,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:13,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:33:13,294 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:33:13,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-19 07:33:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:33:14,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 07:33:14,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:33:15,421 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 10053 proven. 447 refuted. 0 times theorem prover too weak. 5520 trivial. 0 not checked. [2023-12-19 07:33:15,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:33:15,841 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 204 proven. 327 refuted. 0 times theorem prover too weak. 15489 trivial. 0 not checked. [2023-12-19 07:33:15,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:33:15,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081301221] [2023-12-19 07:33:15,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:33:15,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007961156] [2023-12-19 07:33:15,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007961156] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:33:15,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:33:15,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 20 [2023-12-19 07:33:15,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79753927] [2023-12-19 07:33:15,842 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:33:15,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-19 07:33:15,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:33:15,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-19 07:33:15,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2023-12-19 07:33:15,844 INFO L87 Difference]: Start difference. First operand 57559 states and 92282 transitions. Second operand has 20 states, 20 states have (on average 12.5) internal successors, (250), 19 states have internal predecessors, (250), 5 states have call successors, (155), 4 states have call predecessors, (155), 8 states have return successors, (156), 5 states have call predecessors, (156), 5 states have call successors, (156) [2023-12-19 07:33:27,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:33:27,594 INFO L93 Difference]: Finished difference Result 165437 states and 262199 transitions. [2023-12-19 07:33:27,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-19 07:33:27,595 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 12.5) internal successors, (250), 19 states have internal predecessors, (250), 5 states have call successors, (155), 4 states have call predecessors, (155), 8 states have return successors, (156), 5 states have call predecessors, (156), 5 states have call successors, (156) Word has length 596 [2023-12-19 07:33:27,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:33:28,110 INFO L225 Difference]: With dead ends: 165437 [2023-12-19 07:33:28,110 INFO L226 Difference]: Without dead ends: 104743 [2023-12-19 07:33:28,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1227 GetRequests, 1175 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=680, Invalid=2076, Unknown=0, NotChecked=0, Total=2756 [2023-12-19 07:33:28,229 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 1161 mSDsluCounter, 3022 mSDsCounter, 0 mSdLazyCounter, 3418 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 3656 SdHoareTripleChecker+Invalid, 3875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 3418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 07:33:28,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 3656 Invalid, 3875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 3418 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 07:33:28,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104743 states. [2023-12-19 07:33:35,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104743 to 67495. [2023-12-19 07:33:35,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67495 states, 51726 states have (on average 1.5211692379074353) internal successors, (78684), 51934 states have internal predecessors, (78684), 14272 states have call successors, (14272), 1496 states have call predecessors, (14272), 1496 states have return successors, (14272), 14064 states have call predecessors, (14272), 14272 states have call successors, (14272) [2023-12-19 07:33:35,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67495 states to 67495 states and 107228 transitions. [2023-12-19 07:33:35,548 INFO L78 Accepts]: Start accepts. Automaton has 67495 states and 107228 transitions. Word has length 596 [2023-12-19 07:33:35,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:33:35,549 INFO L495 AbstractCegarLoop]: Abstraction has 67495 states and 107228 transitions. [2023-12-19 07:33:35,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 12.5) internal successors, (250), 19 states have internal predecessors, (250), 5 states have call successors, (155), 4 states have call predecessors, (155), 8 states have return successors, (156), 5 states have call predecessors, (156), 5 states have call successors, (156) [2023-12-19 07:33:35,549 INFO L276 IsEmpty]: Start isEmpty. Operand 67495 states and 107228 transitions. [2023-12-19 07:33:35,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2023-12-19 07:33:35,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:33:35,559 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:33:35,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-19 07:33:35,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:35,772 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:33:35,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:33:35,772 INFO L85 PathProgramCache]: Analyzing trace with hash 2014019460, now seen corresponding path program 1 times [2023-12-19 07:33:35,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:33:35,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340201178] [2023-12-19 07:33:35,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:35,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:33:35,828 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:33:35,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [613113852] [2023-12-19 07:33:35,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:35,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:35,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:33:35,849 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:33:35,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-19 07:33:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:33:36,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 07:33:36,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:33:36,531 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2023-12-19 07:33:36,532 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:33:36,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:33:36,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340201178] [2023-12-19 07:33:36,532 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:33:36,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613113852] [2023-12-19 07:33:36,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613113852] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:33:36,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:33:36,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:33:36,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724241917] [2023-12-19 07:33:36,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:33:36,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:33:36,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:33:36,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:33:36,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:33:36,535 INFO L87 Difference]: Start difference. First operand 67495 states and 107228 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-19 07:33:40,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:33:40,170 INFO L93 Difference]: Finished difference Result 114191 states and 183956 transitions. [2023-12-19 07:33:40,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:33:40,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 597 [2023-12-19 07:33:40,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:33:40,260 INFO L225 Difference]: With dead ends: 114191 [2023-12-19 07:33:40,260 INFO L226 Difference]: Without dead ends: 40443 [2023-12-19 07:33:40,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 594 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 07:33:40,363 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 482 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:33:40,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 550 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:33:40,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40443 states. [2023-12-19 07:33:43,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40443 to 34073. [2023-12-19 07:33:43,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34073 states, 26188 states have (on average 1.5109592179624256) internal successors, (39569), 26292 states have internal predecessors, (39569), 7136 states have call successors, (7136), 748 states have call predecessors, (7136), 748 states have return successors, (7136), 7032 states have call predecessors, (7136), 7136 states have call successors, (7136) [2023-12-19 07:33:43,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34073 states to 34073 states and 53841 transitions. [2023-12-19 07:33:44,007 INFO L78 Accepts]: Start accepts. Automaton has 34073 states and 53841 transitions. Word has length 597 [2023-12-19 07:33:44,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:33:44,008 INFO L495 AbstractCegarLoop]: Abstraction has 34073 states and 53841 transitions. [2023-12-19 07:33:44,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-19 07:33:44,008 INFO L276 IsEmpty]: Start isEmpty. Operand 34073 states and 53841 transitions. [2023-12-19 07:33:44,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2023-12-19 07:33:44,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:33:44,015 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:33:44,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-19 07:33:44,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:44,228 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:33:44,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:33:44,228 INFO L85 PathProgramCache]: Analyzing trace with hash 165270658, now seen corresponding path program 1 times [2023-12-19 07:33:44,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:33:44,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330675704] [2023-12-19 07:33:44,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:44,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:33:44,281 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:33:44,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1223627777] [2023-12-19 07:33:44,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:44,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:44,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:33:44,283 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:33:44,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-19 07:33:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:33:44,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:33:44,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:33:44,931 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2023-12-19 07:33:44,931 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:33:44,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:33:44,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330675704] [2023-12-19 07:33:44,931 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:33:44,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223627777] [2023-12-19 07:33:44,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223627777] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:33:44,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:33:44,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 07:33:44,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471487022] [2023-12-19 07:33:44,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:33:44,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:33:44,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:33:44,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:33:44,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:33:44,934 INFO L87 Difference]: Start difference. First operand 34073 states and 53841 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-19 07:33:51,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:33:51,636 INFO L93 Difference]: Finished difference Result 114715 states and 182043 transitions. [2023-12-19 07:33:51,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 07:33:51,637 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 599 [2023-12-19 07:33:51,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:33:51,809 INFO L225 Difference]: With dead ends: 114715 [2023-12-19 07:33:51,809 INFO L226 Difference]: Without dead ends: 80643 [2023-12-19 07:33:51,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 595 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:33:51,876 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 716 mSDsluCounter, 1345 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:33:51,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 1837 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 07:33:51,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80643 states. [2023-12-19 07:33:58,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80643 to 67297. [2023-12-19 07:33:58,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67297 states, 51528 states have (on average 1.5029498525073746) internal successors, (77444), 51736 states have internal predecessors, (77444), 14272 states have call successors, (14272), 1496 states have call predecessors, (14272), 1496 states have return successors, (14272), 14064 states have call predecessors, (14272), 14272 states have call successors, (14272) [2023-12-19 07:33:59,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67297 states to 67297 states and 105988 transitions. [2023-12-19 07:33:59,168 INFO L78 Accepts]: Start accepts. Automaton has 67297 states and 105988 transitions. Word has length 599 [2023-12-19 07:33:59,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:33:59,169 INFO L495 AbstractCegarLoop]: Abstraction has 67297 states and 105988 transitions. [2023-12-19 07:33:59,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-12-19 07:33:59,170 INFO L276 IsEmpty]: Start isEmpty. Operand 67297 states and 105988 transitions. [2023-12-19 07:33:59,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2023-12-19 07:33:59,185 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:33:59,186 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:33:59,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-19 07:33:59,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-19 07:33:59,398 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:33:59,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:33:59,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1490126852, now seen corresponding path program 1 times [2023-12-19 07:33:59,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:33:59,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617549655] [2023-12-19 07:33:59,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:59,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:33:59,447 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:33:59,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1915761881] [2023-12-19 07:33:59,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:33:59,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:59,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:33:59,449 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:33:59,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-19 07:33:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:33:59,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 07:34:00,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:34:00,845 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 8099 proven. 132 refuted. 0 times theorem prover too weak. 7789 trivial. 0 not checked. [2023-12-19 07:34:00,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:34:01,386 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 135 proven. 132 refuted. 0 times theorem prover too weak. 15753 trivial. 0 not checked. [2023-12-19 07:34:01,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:34:01,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617549655] [2023-12-19 07:34:01,386 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:34:01,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915761881] [2023-12-19 07:34:01,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915761881] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:34:01,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:34:01,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8] total 12 [2023-12-19 07:34:01,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252120757] [2023-12-19 07:34:01,387 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:34:01,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 07:34:01,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:34:01,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 07:34:01,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:34:01,389 INFO L87 Difference]: Start difference. First operand 67297 states and 105988 transitions. Second operand has 12 states, 12 states have (on average 22.916666666666668) internal successors, (275), 12 states have internal predecessors, (275), 4 states have call successors, (180), 3 states have call predecessors, (180), 5 states have return successors, (180), 4 states have call predecessors, (180), 4 states have call successors, (180) [2023-12-19 07:34:36,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:34:36,094 INFO L93 Difference]: Finished difference Result 386701 states and 605308 transitions. [2023-12-19 07:34:36,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 07:34:36,095 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 22.916666666666668) internal successors, (275), 12 states have internal predecessors, (275), 4 states have call successors, (180), 3 states have call predecessors, (180), 5 states have return successors, (180), 4 states have call predecessors, (180), 4 states have call successors, (180) Word has length 599 [2023-12-19 07:34:36,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:34:37,253 INFO L225 Difference]: With dead ends: 386701 [2023-12-19 07:34:37,253 INFO L226 Difference]: Without dead ends: 319405 [2023-12-19 07:34:37,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1203 GetRequests, 1187 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-12-19 07:34:37,429 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 1566 mSDsluCounter, 3066 mSDsCounter, 0 mSdLazyCounter, 2160 mSolverCounterSat, 423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1700 SdHoareTripleChecker+Valid, 3537 SdHoareTripleChecker+Invalid, 2583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 423 IncrementalHoareTripleChecker+Valid, 2160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 07:34:37,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1700 Valid, 3537 Invalid, 2583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [423 Valid, 2160 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 07:34:37,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319405 states.