/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-29.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 07:34:14,185 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 07:34:14,249 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 07:34:14,252 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 07:34:14,255 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 07:34:14,281 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 07:34:14,282 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 07:34:14,282 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 07:34:14,282 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 07:34:14,285 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 07:34:14,286 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 07:34:14,286 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 07:34:14,286 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 07:34:14,288 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 07:34:14,288 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 07:34:14,288 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 07:34:14,288 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 07:34:14,288 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 07:34:14,288 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 07:34:14,289 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 07:34:14,289 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 07:34:14,289 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 07:34:14,289 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 07:34:14,289 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 07:34:14,289 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 07:34:14,290 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 07:34:14,290 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 07:34:14,290 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 07:34:14,290 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 07:34:14,290 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 07:34:14,291 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 07:34:14,291 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 07:34:14,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:34:14,292 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 07:34:14,292 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 07:34:14,292 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 07:34:14,292 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 07:34:14,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 07:34:14,292 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 07:34:14,292 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 07:34:14,292 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 07:34:14,293 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 07:34:14,293 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 07:34:14,293 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 07:34:14,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 07:34:14,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 07:34:14,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 07:34:14,508 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 07:34:14,509 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 07:34:14,509 INFO L431 ainManager$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-29.i [2023-12-19 07:34:15,700 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 07:34:15,910 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 07:34:15,910 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-29.i [2023-12-19 07:34:15,919 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/255ebff86/f5edebd78b2344249060ad1542929f35/FLAGb4d88a134 [2023-12-19 07:34:15,930 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/255ebff86/f5edebd78b2344249060ad1542929f35 [2023-12-19 07:34:15,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 07:34:15,932 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 07:34:15,933 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 07:34:15,933 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 07:34:15,947 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 07:34:15,947 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:34:15" (1/1) ... [2023-12-19 07:34:15,948 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7458f8d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:34:15, skipping insertion in model container [2023-12-19 07:34:15,948 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:34:15" (1/1) ... [2023-12-19 07:34:16,012 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 07:34:16,177 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-29.i[916,929] [2023-12-19 07:34:16,379 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:34:16,395 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 07:34:16,404 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-29.i[916,929] [2023-12-19 07:34:16,471 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:34:16,489 INFO L206 MainTranslator]: Completed translation [2023-12-19 07:34:16,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:34:16 WrapperNode [2023-12-19 07:34:16,489 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 07:34:16,490 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 07:34:16,490 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 07:34:16,490 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 07:34:16,496 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:34:16" (1/1) ... [2023-12-19 07:34:16,532 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:34:16" (1/1) ... [2023-12-19 07:34:16,629 INFO L138 Inliner]: procedures = 26, calls = 123, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 884 [2023-12-19 07:34:16,629 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 07:34:16,630 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 07:34:16,630 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 07:34:16,630 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 07:34:16,643 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:34:16" (1/1) ... [2023-12-19 07:34:16,643 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:34:16" (1/1) ... [2023-12-19 07:34:16,659 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:34:16" (1/1) ... [2023-12-19 07:34:16,709 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 07:34:16,710 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:34:16" (1/1) ... [2023-12-19 07:34:16,710 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:34:16" (1/1) ... [2023-12-19 07:34:16,737 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:34:16" (1/1) ... [2023-12-19 07:34:16,744 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:34:16" (1/1) ... [2023-12-19 07:34:16,751 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:34:16" (1/1) ... [2023-12-19 07:34:16,776 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:34:16" (1/1) ... [2023-12-19 07:34:16,789 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 07:34:16,790 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 07:34:16,790 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 07:34:16,790 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 07:34:16,791 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:34:16" (1/1) ... [2023-12-19 07:34:16,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:34:16,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:34:16,833 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 07:34:16,901 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 07:34:16,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 07:34:16,920 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 07:34:16,920 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 07:34:16,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 07:34:16,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 07:34:16,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 07:34:17,039 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 07:34:17,041 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 07:34:17,849 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 07:34:17,909 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 07:34:17,909 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 07:34:17,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:34:17 BoogieIcfgContainer [2023-12-19 07:34:17,909 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 07:34:17,911 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 07:34:17,911 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 07:34:17,914 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 07:34:17,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 07:34:15" (1/3) ... [2023-12-19 07:34:17,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111b3b54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:34:17, skipping insertion in model container [2023-12-19 07:34:17,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:34:16" (2/3) ... [2023-12-19 07:34:17,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111b3b54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:34:17, skipping insertion in model container [2023-12-19 07:34:17,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:34:17" (3/3) ... [2023-12-19 07:34:17,917 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-29.i [2023-12-19 07:34:17,929 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 07:34:17,929 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 07:34:17,970 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 07:34:17,974 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;@43334877, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 07:34:17,975 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 07:34:17,983 INFO L276 IsEmpty]: Start isEmpty. Operand has 337 states, 224 states have (on average 1.6830357142857142) internal successors, (377), 225 states have internal predecessors, (377), 110 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 110 states have call predecessors, (110), 110 states have call successors, (110) [2023-12-19 07:34:18,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2023-12-19 07:34:18,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:34:18,022 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:18,023 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:34:18,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:34:18,026 INFO L85 PathProgramCache]: Analyzing trace with hash 218441879, now seen corresponding path program 1 times [2023-12-19 07:34:18,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:34:18,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461264889] [2023-12-19 07:34:18,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:18,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:34:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:34:18,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:34:18,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461264889] [2023-12-19 07:34:18,442 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 07:34:18,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870673790] [2023-12-19 07:34:18,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:18,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:34:18,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:34:18,457 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 07:34:18,508 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 07:34:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:34:18,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 1584 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 07:34:18,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:34:19,037 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 23762 trivial. 0 not checked. [2023-12-19 07:34:19,037 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:34:19,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870673790] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:34:19,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:34:19,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:34:19,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477599937] [2023-12-19 07:34:19,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:34:19,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 07:34:19,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:34:19,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 07:34:19,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:34:19,079 INFO L87 Difference]: Start difference. First operand has 337 states, 224 states have (on average 1.6830357142857142) internal successors, (377), 225 states have internal predecessors, (377), 110 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 110 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 2 states have call successors, (110), 2 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 2 states have call successors, (110) [2023-12-19 07:34:19,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:34:19,158 INFO L93 Difference]: Finished difference Result 671 states and 1302 transitions. [2023-12-19 07:34:19,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 07:34:19,161 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 2 states have call successors, (110), 2 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 2 states have call successors, (110) Word has length 698 [2023-12-19 07:34:19,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:34:19,175 INFO L225 Difference]: With dead ends: 671 [2023-12-19 07:34:19,175 INFO L226 Difference]: Without dead ends: 335 [2023-12-19 07:34:19,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 697 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 07:34:19,187 INFO L413 NwaCegarLoop]: 588 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, 588 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 07:34:19,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 588 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:34:19,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2023-12-19 07:34:19,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2023-12-19 07:34:19,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 223 states have (on average 1.663677130044843) internal successors, (371), 223 states have internal predecessors, (371), 110 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 110 states have call predecessors, (110), 110 states have call successors, (110) [2023-12-19 07:34:19,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 591 transitions. [2023-12-19 07:34:19,281 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 591 transitions. Word has length 698 [2023-12-19 07:34:19,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:34:19,282 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 591 transitions. [2023-12-19 07:34:19,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 2 states have call successors, (110), 2 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 2 states have call successors, (110) [2023-12-19 07:34:19,283 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 591 transitions. [2023-12-19 07:34:19,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2023-12-19 07:34:19,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:34:19,294 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:19,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 07:34:19,503 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 07:34:19,504 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:34:19,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:34:19,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1350454051, now seen corresponding path program 1 times [2023-12-19 07:34:19,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:34:19,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574312920] [2023-12-19 07:34:19,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:19,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:34:19,635 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:34:19,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [645312534] [2023-12-19 07:34:19,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:19,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:34:19,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:34:19,659 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 07:34:19,686 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 07:34:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:34:20,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 1584 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 07:34:20,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:34:20,735 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23980 trivial. 0 not checked. [2023-12-19 07:34:20,735 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:34:20,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:34:20,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574312920] [2023-12-19 07:34:20,736 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:34:20,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645312534] [2023-12-19 07:34:20,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645312534] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:34:20,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:34:20,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 07:34:20,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036109083] [2023-12-19 07:34:20,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:34:20,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 07:34:20,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:34:20,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 07:34:20,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:34:20,740 INFO L87 Difference]: Start difference. First operand 335 states and 591 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-19 07:34:22,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:34:22,615 INFO L93 Difference]: Finished difference Result 2441 states and 4319 transitions. [2023-12-19 07:34:22,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 07:34:22,615 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) Word has length 698 [2023-12-19 07:34:22,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:34:22,637 INFO L225 Difference]: With dead ends: 2441 [2023-12-19 07:34:22,637 INFO L226 Difference]: Without dead ends: 2107 [2023-12-19 07:34:22,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 693 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-19 07:34:22,640 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 3790 mSDsluCounter, 2592 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 980 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3790 SdHoareTripleChecker+Valid, 3472 SdHoareTripleChecker+Invalid, 2499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 980 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 07:34:22,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3790 Valid, 3472 Invalid, 2499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [980 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 07:34:22,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2107 states. [2023-12-19 07:34:22,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2107 to 1222. [2023-12-19 07:34:22,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 835 states have (on average 1.6778443113772454) internal successors, (1401), 836 states have internal predecessors, (1401), 382 states have call successors, (382), 4 states have call predecessors, (382), 4 states have return successors, (382), 381 states have call predecessors, (382), 382 states have call successors, (382) [2023-12-19 07:34:22,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 2165 transitions. [2023-12-19 07:34:22,813 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 2165 transitions. Word has length 698 [2023-12-19 07:34:22,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:34:22,815 INFO L495 AbstractCegarLoop]: Abstraction has 1222 states and 2165 transitions. [2023-12-19 07:34:22,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-19 07:34:22,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 2165 transitions. [2023-12-19 07:34:22,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2023-12-19 07:34:22,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:34:22,823 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:22,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 07:34:23,032 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 07:34:23,033 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:34:23,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:34:23,034 INFO L85 PathProgramCache]: Analyzing trace with hash -982938587, now seen corresponding path program 1 times [2023-12-19 07:34:23,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:34:23,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557404882] [2023-12-19 07:34:23,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:23,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:34:23,176 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:34:23,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [124835023] [2023-12-19 07:34:23,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:23,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:34:23,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:34:23,184 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 07:34:23,187 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 07:34:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:34:23,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 1582 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:34:23,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:34:23,654 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23980 trivial. 0 not checked. [2023-12-19 07:34:23,654 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:34:23,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:34:23,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557404882] [2023-12-19 07:34:23,655 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:34:23,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124835023] [2023-12-19 07:34:23,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124835023] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:34:23,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:34:23,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:34:23,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501956298] [2023-12-19 07:34:23,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:34:23,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:34:23,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:34:23,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:34:23,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:34:23,659 INFO L87 Difference]: Start difference. First operand 1222 states and 2165 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-19 07:34:23,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:34:23,758 INFO L93 Difference]: Finished difference Result 3219 states and 5744 transitions. [2023-12-19 07:34:23,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:34:23,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) Word has length 698 [2023-12-19 07:34:23,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:34:23,773 INFO L225 Difference]: With dead ends: 3219 [2023-12-19 07:34:23,773 INFO L226 Difference]: Without dead ends: 1998 [2023-12-19 07:34:23,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 696 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 07:34:23,779 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 359 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:34:23,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 1243 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:34:23,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2023-12-19 07:34:23,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1992. [2023-12-19 07:34:23,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1992 states, 1481 states have (on average 1.725860904794058) internal successors, (2556), 1486 states have internal predecessors, (2556), 502 states have call successors, (502), 8 states have call predecessors, (502), 8 states have return successors, (502), 497 states have call predecessors, (502), 502 states have call successors, (502) [2023-12-19 07:34:23,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1992 states to 1992 states and 3560 transitions. [2023-12-19 07:34:23,905 INFO L78 Accepts]: Start accepts. Automaton has 1992 states and 3560 transitions. Word has length 698 [2023-12-19 07:34:23,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:34:23,906 INFO L495 AbstractCegarLoop]: Abstraction has 1992 states and 3560 transitions. [2023-12-19 07:34:23,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-19 07:34:23,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1992 states and 3560 transitions. [2023-12-19 07:34:23,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2023-12-19 07:34:23,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:34:23,912 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:23,931 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 07:34:24,119 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 07:34:24,120 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:34:24,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:34:24,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1432897763, now seen corresponding path program 1 times [2023-12-19 07:34:24,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:34:24,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130590643] [2023-12-19 07:34:24,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:24,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:34:24,168 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:34:24,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1261283529] [2023-12-19 07:34:24,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:24,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:34:24,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:34:24,190 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 07:34:24,191 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 07:34:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:34:24,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 1583 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:34:24,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:34:24,621 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23980 trivial. 0 not checked. [2023-12-19 07:34:24,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:34:24,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:34:24,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130590643] [2023-12-19 07:34:24,621 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:34:24,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261283529] [2023-12-19 07:34:24,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261283529] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:34:24,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:34:24,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:34:24,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166607366] [2023-12-19 07:34:24,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:34:24,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:34:24,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:34:24,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:34:24,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:34:24,624 INFO L87 Difference]: Start difference. First operand 1992 states and 3560 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-19 07:34:24,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:34:24,707 INFO L93 Difference]: Finished difference Result 4017 states and 7160 transitions. [2023-12-19 07:34:24,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:34:24,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) Word has length 698 [2023-12-19 07:34:24,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:34:24,717 INFO L225 Difference]: With dead ends: 4017 [2023-12-19 07:34:24,717 INFO L226 Difference]: Without dead ends: 2026 [2023-12-19 07:34:24,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 696 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 07:34:24,722 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 334 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:34:24,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1230 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:34:24,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2023-12-19 07:34:24,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 1692. [2023-12-19 07:34:24,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1692 states, 1301 states have (on average 1.744043043812452) internal successors, (2269), 1302 states have internal predecessors, (2269), 382 states have call successors, (382), 8 states have call predecessors, (382), 8 states have return successors, (382), 381 states have call predecessors, (382), 382 states have call successors, (382) [2023-12-19 07:34:24,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 3033 transitions. [2023-12-19 07:34:24,808 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 3033 transitions. Word has length 698 [2023-12-19 07:34:24,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:34:24,808 INFO L495 AbstractCegarLoop]: Abstraction has 1692 states and 3033 transitions. [2023-12-19 07:34:24,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-19 07:34:24,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 3033 transitions. [2023-12-19 07:34:24,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2023-12-19 07:34:24,814 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:34:24,814 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:24,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 07:34:25,043 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 07:34:25,044 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:34:25,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:34:25,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1727092059, now seen corresponding path program 1 times [2023-12-19 07:34:25,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:34:25,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453478337] [2023-12-19 07:34:25,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:25,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:34:25,088 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:34:25,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [55029037] [2023-12-19 07:34:25,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:25,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:34:25,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:34:25,105 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 07:34:25,106 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 07:34:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:34:25,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 1581 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:34:25,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:34:25,464 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23980 trivial. 0 not checked. [2023-12-19 07:34:25,465 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:34:25,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:34:25,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453478337] [2023-12-19 07:34:25,465 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:34:25,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55029037] [2023-12-19 07:34:25,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55029037] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:34:25,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:34:25,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:34:25,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119393598] [2023-12-19 07:34:25,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:34:25,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:34:25,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:34:25,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:34:25,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:34:25,467 INFO L87 Difference]: Start difference. First operand 1692 states and 3033 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-19 07:34:25,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:34:25,596 INFO L93 Difference]: Finished difference Result 5038 states and 9025 transitions. [2023-12-19 07:34:25,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:34:25,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) Word has length 698 [2023-12-19 07:34:25,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:34:25,609 INFO L225 Difference]: With dead ends: 5038 [2023-12-19 07:34:25,609 INFO L226 Difference]: Without dead ends: 3347 [2023-12-19 07:34:25,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 696 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 07:34:25,614 INFO L413 NwaCegarLoop]: 986 mSDtfsCounter, 577 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:34:25,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 1559 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:34:25,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3347 states. [2023-12-19 07:34:25,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 2484. [2023-12-19 07:34:25,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2484 states, 2093 states have (on average 1.7921643573817487) internal successors, (3751), 2094 states have internal predecessors, (3751), 382 states have call successors, (382), 8 states have call predecessors, (382), 8 states have return successors, (382), 381 states have call predecessors, (382), 382 states have call successors, (382) [2023-12-19 07:34:25,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 4515 transitions. [2023-12-19 07:34:25,758 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 4515 transitions. Word has length 698 [2023-12-19 07:34:25,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:34:25,759 INFO L495 AbstractCegarLoop]: Abstraction has 2484 states and 4515 transitions. [2023-12-19 07:34:25,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-19 07:34:25,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 4515 transitions. [2023-12-19 07:34:25,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2023-12-19 07:34:25,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:34:25,767 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:25,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 07:34:25,975 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 07:34:25,975 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:34:25,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:34:25,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1283191385, now seen corresponding path program 1 times [2023-12-19 07:34:25,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:34:25,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751288290] [2023-12-19 07:34:25,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:25,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:34:26,024 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:34:26,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1020804262] [2023-12-19 07:34:26,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:26,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:34:26,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:34:26,025 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 07:34:26,032 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 07:34:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:34:26,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 1578 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:34:26,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:34:26,404 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23980 trivial. 0 not checked. [2023-12-19 07:34:26,404 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:34:26,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:34:26,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751288290] [2023-12-19 07:34:26,405 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:34:26,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020804262] [2023-12-19 07:34:26,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020804262] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:34:26,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:34:26,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:34:26,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651611077] [2023-12-19 07:34:26,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:34:26,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:34:26,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:34:26,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:34:26,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:34:26,407 INFO L87 Difference]: Start difference. First operand 2484 states and 4515 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-19 07:34:26,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:34:26,547 INFO L93 Difference]: Finished difference Result 6818 states and 12319 transitions. [2023-12-19 07:34:26,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:34:26,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) Word has length 698 [2023-12-19 07:34:26,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:34:26,564 INFO L225 Difference]: With dead ends: 6818 [2023-12-19 07:34:26,564 INFO L226 Difference]: Without dead ends: 4335 [2023-12-19 07:34:26,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 696 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 07:34:26,571 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 495 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:34:26,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 1166 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:34:26,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4335 states. [2023-12-19 07:34:26,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4335 to 2916. [2023-12-19 07:34:26,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2525 states have (on average 1.8055445544554456) internal successors, (4559), 2526 states have internal predecessors, (4559), 382 states have call successors, (382), 8 states have call predecessors, (382), 8 states have return successors, (382), 381 states have call predecessors, (382), 382 states have call successors, (382) [2023-12-19 07:34:26,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 5323 transitions. [2023-12-19 07:34:26,745 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 5323 transitions. Word has length 698 [2023-12-19 07:34:26,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:34:26,746 INFO L495 AbstractCegarLoop]: Abstraction has 2916 states and 5323 transitions. [2023-12-19 07:34:26,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-19 07:34:26,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 5323 transitions. [2023-12-19 07:34:26,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2023-12-19 07:34:26,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:34:26,753 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:26,777 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 07:34:26,961 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 07:34:26,961 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:34:26,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:34:26,962 INFO L85 PathProgramCache]: Analyzing trace with hash 640036649, now seen corresponding path program 1 times [2023-12-19 07:34:26,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:34:26,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327300885] [2023-12-19 07:34:26,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:26,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:34:27,010 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:34:27,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2110519221] [2023-12-19 07:34:27,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:27,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:34:27,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:34:27,025 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 07:34:27,053 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 07:34:27,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:34:27,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 1579 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:34:27,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:34:27,796 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 12057 proven. 153 refuted. 0 times theorem prover too weak. 11770 trivial. 0 not checked. [2023-12-19 07:34:27,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:34:28,142 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 174 proven. 153 refuted. 0 times theorem prover too weak. 23653 trivial. 0 not checked. [2023-12-19 07:34:28,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:34:28,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327300885] [2023-12-19 07:34:28,143 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:34:28,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110519221] [2023-12-19 07:34:28,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110519221] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:34:28,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:34:28,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:34:28,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016888883] [2023-12-19 07:34:28,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:34:28,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:34:28,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:34:28,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:34:28,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:34:28,146 INFO L87 Difference]: Start difference. First operand 2916 states and 5323 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (161), 2 states have call predecessors, (161), 4 states have return successors, (162), 2 states have call predecessors, (162), 2 states have call successors, (162) [2023-12-19 07:34:28,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:34:28,886 INFO L93 Difference]: Finished difference Result 5958 states and 10826 transitions. [2023-12-19 07:34:28,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:34:28,887 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (161), 2 states have call predecessors, (161), 4 states have return successors, (162), 2 states have call predecessors, (162), 2 states have call successors, (162) Word has length 698 [2023-12-19 07:34:28,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:34:28,899 INFO L225 Difference]: With dead ends: 5958 [2023-12-19 07:34:28,899 INFO L226 Difference]: Without dead ends: 3043 [2023-12-19 07:34:28,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1398 GetRequests, 1388 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:34:28,906 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 645 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 07:34:28,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 1374 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 07:34:28,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2023-12-19 07:34:29,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 3022. [2023-12-19 07:34:29,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3022 states, 2569 states have (on average 1.7715064227325807) internal successors, (4551), 2571 states have internal predecessors, (4551), 440 states have call successors, (440), 12 states have call predecessors, (440), 12 states have return successors, (440), 438 states have call predecessors, (440), 440 states have call successors, (440) [2023-12-19 07:34:29,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3022 states to 3022 states and 5431 transitions. [2023-12-19 07:34:29,033 INFO L78 Accepts]: Start accepts. Automaton has 3022 states and 5431 transitions. Word has length 698 [2023-12-19 07:34:29,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:34:29,033 INFO L495 AbstractCegarLoop]: Abstraction has 3022 states and 5431 transitions. [2023-12-19 07:34:29,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (161), 2 states have call predecessors, (161), 4 states have return successors, (162), 2 states have call predecessors, (162), 2 states have call successors, (162) [2023-12-19 07:34:29,034 INFO L276 IsEmpty]: Start isEmpty. Operand 3022 states and 5431 transitions. [2023-12-19 07:34:29,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 700 [2023-12-19 07:34:29,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:34:29,100 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:29,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 07:34:29,308 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 07:34:29,308 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:34:29,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:34:29,309 INFO L85 PathProgramCache]: Analyzing trace with hash -690823382, now seen corresponding path program 1 times [2023-12-19 07:34:29,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:34:29,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455897631] [2023-12-19 07:34:29,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:29,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:34:29,362 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:34:29,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1208800409] [2023-12-19 07:34:29,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:29,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:34:29,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:34:29,364 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 07:34:29,398 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 07:34:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:34:29,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 1583 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 07:34:29,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:34:30,995 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 8555 proven. 258 refuted. 0 times theorem prover too weak. 15167 trivial. 0 not checked. [2023-12-19 07:34:30,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:34:31,507 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 69 proven. 258 refuted. 0 times theorem prover too weak. 23653 trivial. 0 not checked. [2023-12-19 07:34:31,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:34:31,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455897631] [2023-12-19 07:34:31,507 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:34:31,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208800409] [2023-12-19 07:34:31,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208800409] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:34:31,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:34:31,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-19 07:34:31,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240695347] [2023-12-19 07:34:31,508 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:34:31,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 07:34:31,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:34:31,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 07:34:31,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-19 07:34:31,510 INFO L87 Difference]: Start difference. First operand 3022 states and 5431 transitions. Second operand has 10 states, 10 states have (on average 30.0) internal successors, (300), 10 states have internal predecessors, (300), 5 states have call successors, (212), 3 states have call predecessors, (212), 5 states have return successors, (212), 5 states have call predecessors, (212), 5 states have call successors, (212) [2023-12-19 07:34:31,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:34:31,979 INFO L93 Difference]: Finished difference Result 5989 states and 10745 transitions. [2023-12-19 07:34:31,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:34:31,980 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 30.0) internal successors, (300), 10 states have internal predecessors, (300), 5 states have call successors, (212), 3 states have call predecessors, (212), 5 states have return successors, (212), 5 states have call predecessors, (212), 5 states have call successors, (212) Word has length 699 [2023-12-19 07:34:31,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:34:31,991 INFO L225 Difference]: With dead ends: 5989 [2023-12-19 07:34:31,991 INFO L226 Difference]: Without dead ends: 3062 [2023-12-19 07:34:31,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1400 GetRequests, 1388 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 07:34:31,998 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 959 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:34:31,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 1174 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:34:32,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2023-12-19 07:34:32,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 3042. [2023-12-19 07:34:32,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3042 states, 2584 states have (on average 1.7654798761609907) internal successors, (4562), 2586 states have internal predecessors, (4562), 440 states have call successors, (440), 17 states have call predecessors, (440), 17 states have return successors, (440), 438 states have call predecessors, (440), 440 states have call successors, (440) [2023-12-19 07:34:32,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3042 states to 3042 states and 5442 transitions. [2023-12-19 07:34:32,114 INFO L78 Accepts]: Start accepts. Automaton has 3042 states and 5442 transitions. Word has length 699 [2023-12-19 07:34:32,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:34:32,115 INFO L495 AbstractCegarLoop]: Abstraction has 3042 states and 5442 transitions. [2023-12-19 07:34:32,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 30.0) internal successors, (300), 10 states have internal predecessors, (300), 5 states have call successors, (212), 3 states have call predecessors, (212), 5 states have return successors, (212), 5 states have call predecessors, (212), 5 states have call successors, (212) [2023-12-19 07:34:32,116 INFO L276 IsEmpty]: Start isEmpty. Operand 3042 states and 5442 transitions. [2023-12-19 07:34:32,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2023-12-19 07:34:32,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:34:32,123 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:32,146 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 07:34:32,347 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 07:34:32,348 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:34:32,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:34:32,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1159645248, now seen corresponding path program 1 times [2023-12-19 07:34:32,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:34:32,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789034720] [2023-12-19 07:34:32,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:32,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:34:32,392 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:34:32,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1047554499] [2023-12-19 07:34:32,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:32,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:34:32,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:34:32,394 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 07:34:32,421 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 07:34:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:34:32,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 1581 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:34:32,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:34:33,086 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 11169 proven. 117 refuted. 0 times theorem prover too weak. 12694 trivial. 0 not checked. [2023-12-19 07:34:33,086 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:34:33,464 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 210 proven. 117 refuted. 0 times theorem prover too weak. 23653 trivial. 0 not checked. [2023-12-19 07:34:33,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:34:33,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789034720] [2023-12-19 07:34:33,465 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:34:33,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047554499] [2023-12-19 07:34:33,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047554499] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:34:33,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:34:33,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-19 07:34:33,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963511351] [2023-12-19 07:34:33,465 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:34:33,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 07:34:33,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:34:33,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 07:34:33,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:34:33,467 INFO L87 Difference]: Start difference. First operand 3042 states and 5442 transitions. Second operand has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 states have internal predecessors, (219), 3 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 3 states have call predecessors, (150), 3 states have call successors, (150) [2023-12-19 07:34:34,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:34:34,014 INFO L93 Difference]: Finished difference Result 6017 states and 10758 transitions. [2023-12-19 07:34:34,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 07:34:34,016 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 states have internal predecessors, (219), 3 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 3 states have call predecessors, (150), 3 states have call successors, (150) Word has length 700 [2023-12-19 07:34:34,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:34:34,026 INFO L225 Difference]: With dead ends: 6017 [2023-12-19 07:34:34,026 INFO L226 Difference]: Without dead ends: 3074 [2023-12-19 07:34:34,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1402 GetRequests, 1392 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:34:34,033 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 988 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:34:34,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 1158 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:34:34,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3074 states. [2023-12-19 07:34:34,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3074 to 3054. [2023-12-19 07:34:34,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3054 states, 2593 states have (on average 1.7535672965676823) internal successors, (4547), 2595 states have internal predecessors, (4547), 440 states have call successors, (440), 20 states have call predecessors, (440), 20 states have return successors, (440), 438 states have call predecessors, (440), 440 states have call successors, (440) [2023-12-19 07:34:34,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3054 states to 3054 states and 5427 transitions. [2023-12-19 07:34:34,156 INFO L78 Accepts]: Start accepts. Automaton has 3054 states and 5427 transitions. Word has length 700 [2023-12-19 07:34:34,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:34:34,157 INFO L495 AbstractCegarLoop]: Abstraction has 3054 states and 5427 transitions. [2023-12-19 07:34:34,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 states have internal predecessors, (219), 3 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 3 states have call predecessors, (150), 3 states have call successors, (150) [2023-12-19 07:34:34,157 INFO L276 IsEmpty]: Start isEmpty. Operand 3054 states and 5427 transitions. [2023-12-19 07:34:34,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2023-12-19 07:34:34,164 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:34:34,165 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:34,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-19 07:34:34,372 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 07:34:34,373 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:34:34,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:34:34,373 INFO L85 PathProgramCache]: Analyzing trace with hash -647241724, now seen corresponding path program 1 times [2023-12-19 07:34:34,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:34:34,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757978888] [2023-12-19 07:34:34,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:34,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:34:34,450 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:34:34,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1247509109] [2023-12-19 07:34:34,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:34,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:34:34,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:34:34,461 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 07:34:34,489 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 07:34:34,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:34:34,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 1583 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:34:34,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:34:35,058 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 11499 proven. 126 refuted. 0 times theorem prover too weak. 12355 trivial. 0 not checked. [2023-12-19 07:34:35,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:34:35,355 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 201 proven. 126 refuted. 0 times theorem prover too weak. 23653 trivial. 0 not checked. [2023-12-19 07:34:35,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:34:35,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757978888] [2023-12-19 07:34:35,355 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:34:35,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247509109] [2023-12-19 07:34:35,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247509109] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:34:35,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:34:35,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:34:35,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190214029] [2023-12-19 07:34:35,356 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:34:35,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:34:35,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:34:35,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:34:35,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:34:35,358 INFO L87 Difference]: Start difference. First operand 3054 states and 5427 transitions. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (152), 2 states have call predecessors, (152), 4 states have return successors, (153), 2 states have call predecessors, (153), 2 states have call successors, (153) [2023-12-19 07:34:35,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:34:35,862 INFO L93 Difference]: Finished difference Result 6035 states and 10710 transitions. [2023-12-19 07:34:35,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:34:35,863 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (152), 2 states have call predecessors, (152), 4 states have return successors, (153), 2 states have call predecessors, (153), 2 states have call successors, (153) Word has length 701 [2023-12-19 07:34:35,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:34:35,872 INFO L225 Difference]: With dead ends: 6035 [2023-12-19 07:34:35,872 INFO L226 Difference]: Without dead ends: 3080 [2023-12-19 07:34:35,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1404 GetRequests, 1394 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 07:34:35,878 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 661 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:34:35,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 1135 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:34:35,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3080 states. [2023-12-19 07:34:36,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3080 to 3046. [2023-12-19 07:34:36,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3046 states, 2582 states have (on average 1.7072037180480248) internal successors, (4408), 2584 states have internal predecessors, (4408), 440 states have call successors, (440), 23 states have call predecessors, (440), 23 states have return successors, (440), 438 states have call predecessors, (440), 440 states have call successors, (440) [2023-12-19 07:34:36,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3046 states to 3046 states and 5288 transitions. [2023-12-19 07:34:36,066 INFO L78 Accepts]: Start accepts. Automaton has 3046 states and 5288 transitions. Word has length 701 [2023-12-19 07:34:36,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:34:36,067 INFO L495 AbstractCegarLoop]: Abstraction has 3046 states and 5288 transitions. [2023-12-19 07:34:36,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (152), 2 states have call predecessors, (152), 4 states have return successors, (153), 2 states have call predecessors, (153), 2 states have call successors, (153) [2023-12-19 07:34:36,067 INFO L276 IsEmpty]: Start isEmpty. Operand 3046 states and 5288 transitions. [2023-12-19 07:34:36,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2023-12-19 07:34:36,122 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:34:36,122 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:36,130 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 07:34:36,330 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 07:34:36,330 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:34:36,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:34:36,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1876748676, now seen corresponding path program 1 times [2023-12-19 07:34:36,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:34:36,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026690335] [2023-12-19 07:34:36,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:36,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:34:36,380 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:34:36,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [80489269] [2023-12-19 07:34:36,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:36,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:34:36,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:34:36,381 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 07:34:36,383 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 07:34:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:34:36,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 1585 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:34:36,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:34:37,045 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 11679 proven. 132 refuted. 0 times theorem prover too weak. 12169 trivial. 0 not checked. [2023-12-19 07:34:37,045 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:34:37,370 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 195 proven. 132 refuted. 0 times theorem prover too weak. 23653 trivial. 0 not checked. [2023-12-19 07:34:37,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:34:37,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026690335] [2023-12-19 07:34:37,370 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:34:37,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80489269] [2023-12-19 07:34:37,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80489269] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:34:37,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:34:37,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:34:37,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192788423] [2023-12-19 07:34:37,371 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:34:37,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:34:37,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:34:37,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:34:37,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:34:37,373 INFO L87 Difference]: Start difference. First operand 3046 states and 5288 transitions. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 2 states have call predecessors, (155), 2 states have call successors, (155) [2023-12-19 07:34:37,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:34:37,946 INFO L93 Difference]: Finished difference Result 6037 states and 10462 transitions. [2023-12-19 07:34:37,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:34:37,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 2 states have call predecessors, (155), 2 states have call successors, (155) Word has length 701 [2023-12-19 07:34:37,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:34:37,957 INFO L225 Difference]: With dead ends: 6037 [2023-12-19 07:34:37,958 INFO L226 Difference]: Without dead ends: 3090 [2023-12-19 07:34:37,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1404 GetRequests, 1394 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 07:34:37,964 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 826 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:34:37,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 1143 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:34:37,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2023-12-19 07:34:38,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 3058. [2023-12-19 07:34:38,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3058 states, 2591 states have (on average 1.6985719799305288) internal successors, (4401), 2593 states have internal predecessors, (4401), 440 states have call successors, (440), 26 states have call predecessors, (440), 26 states have return successors, (440), 438 states have call predecessors, (440), 440 states have call successors, (440) [2023-12-19 07:34:38,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3058 states to 3058 states and 5281 transitions. [2023-12-19 07:34:38,156 INFO L78 Accepts]: Start accepts. Automaton has 3058 states and 5281 transitions. Word has length 701 [2023-12-19 07:34:38,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:34:38,156 INFO L495 AbstractCegarLoop]: Abstraction has 3058 states and 5281 transitions. [2023-12-19 07:34:38,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 2 states have call predecessors, (155), 2 states have call successors, (155) [2023-12-19 07:34:38,157 INFO L276 IsEmpty]: Start isEmpty. Operand 3058 states and 5281 transitions. [2023-12-19 07:34:38,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2023-12-19 07:34:38,165 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:34:38,165 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:38,176 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 07:34:38,373 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 07:34:38,374 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:34:38,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:34:38,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1138354942, now seen corresponding path program 1 times [2023-12-19 07:34:38,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:34:38,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504431986] [2023-12-19 07:34:38,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:38,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:34:38,425 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:34:38,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1991200533] [2023-12-19 07:34:38,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:38,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:34:38,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:34:38,446 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 07:34:38,459 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 07:34:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:34:38,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 1586 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 07:34:38,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:34:39,170 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 11169 proven. 117 refuted. 0 times theorem prover too weak. 12694 trivial. 0 not checked. [2023-12-19 07:34:39,170 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:34:39,415 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23980 trivial. 0 not checked. [2023-12-19 07:34:39,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:34:39,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504431986] [2023-12-19 07:34:39,416 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:34:39,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991200533] [2023-12-19 07:34:39,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991200533] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 07:34:39,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 07:34:39,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-19 07:34:39,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752681781] [2023-12-19 07:34:39,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:34:39,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:34:39,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:34:39,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:34:39,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-19 07:34:39,418 INFO L87 Difference]: Start difference. First operand 3058 states and 5281 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-19 07:34:39,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:34:39,846 INFO L93 Difference]: Finished difference Result 9276 states and 16079 transitions. [2023-12-19 07:34:39,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:34:39,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) Word has length 701 [2023-12-19 07:34:39,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:34:39,858 INFO L225 Difference]: With dead ends: 9276 [2023-12-19 07:34:39,858 INFO L226 Difference]: Without dead ends: 6317 [2023-12-19 07:34:39,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1400 GetRequests, 1392 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-19 07:34:39,863 INFO L413 NwaCegarLoop]: 734 mSDtfsCounter, 762 mSDsluCounter, 2039 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 07:34:39,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 2773 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 07:34:39,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6317 states. [2023-12-19 07:34:40,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6317 to 6309. [2023-12-19 07:34:40,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6309 states, 5517 states have (on average 1.7127061808954143) internal successors, (9449), 5524 states have internal predecessors, (9449), 741 states have call successors, (741), 50 states have call predecessors, (741), 50 states have return successors, (741), 734 states have call predecessors, (741), 741 states have call successors, (741) [2023-12-19 07:34:40,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6309 states to 6309 states and 10931 transitions. [2023-12-19 07:34:40,161 INFO L78 Accepts]: Start accepts. Automaton has 6309 states and 10931 transitions. Word has length 701 [2023-12-19 07:34:40,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:34:40,161 INFO L495 AbstractCegarLoop]: Abstraction has 6309 states and 10931 transitions. [2023-12-19 07:34:40,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-19 07:34:40,162 INFO L276 IsEmpty]: Start isEmpty. Operand 6309 states and 10931 transitions. [2023-12-19 07:34:40,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2023-12-19 07:34:40,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:34:40,171 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:40,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 07:34:40,380 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 07:34:40,381 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:34:40,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:34:40,382 INFO L85 PathProgramCache]: Analyzing trace with hash 406387516, now seen corresponding path program 1 times [2023-12-19 07:34:40,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:34:40,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379448825] [2023-12-19 07:34:40,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:40,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:34:40,438 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:34:40,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1699413493] [2023-12-19 07:34:40,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:40,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:34:40,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:34:40,440 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 07:34:40,445 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 07:34:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:34:40,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 1584 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 07:34:40,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:34:41,130 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 11989 proven. 147 refuted. 0 times theorem prover too weak. 11844 trivial. 0 not checked. [2023-12-19 07:34:41,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:34:41,332 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23980 trivial. 0 not checked. [2023-12-19 07:34:41,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:34:41,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379448825] [2023-12-19 07:34:41,333 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:34:41,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699413493] [2023-12-19 07:34:41,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699413493] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 07:34:41,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 07:34:41,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-19 07:34:41,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913626051] [2023-12-19 07:34:41,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:34:41,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:34:41,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:34:41,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:34:41,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:34:41,338 INFO L87 Difference]: Start difference. First operand 6309 states and 10931 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-19 07:34:41,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:34:41,612 INFO L93 Difference]: Finished difference Result 12555 states and 21779 transitions. [2023-12-19 07:34:41,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:34:41,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) Word has length 701 [2023-12-19 07:34:41,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:34:41,629 INFO L225 Difference]: With dead ends: 12555 [2023-12-19 07:34:41,629 INFO L226 Difference]: Without dead ends: 6345 [2023-12-19 07:34:41,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1400 GetRequests, 1394 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:34:41,638 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 0 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:34:41,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1692 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:34:41,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6345 states. [2023-12-19 07:34:41,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6345 to 6345. [2023-12-19 07:34:41,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6345 states, 5553 states have (on average 1.7080857194309382) internal successors, (9485), 5560 states have internal predecessors, (9485), 741 states have call successors, (741), 50 states have call predecessors, (741), 50 states have return successors, (741), 734 states have call predecessors, (741), 741 states have call successors, (741) [2023-12-19 07:34:41,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6345 states to 6345 states and 10967 transitions. [2023-12-19 07:34:41,870 INFO L78 Accepts]: Start accepts. Automaton has 6345 states and 10967 transitions. Word has length 701 [2023-12-19 07:34:41,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:34:41,871 INFO L495 AbstractCegarLoop]: Abstraction has 6345 states and 10967 transitions. [2023-12-19 07:34:41,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-19 07:34:41,871 INFO L276 IsEmpty]: Start isEmpty. Operand 6345 states and 10967 transitions. [2023-12-19 07:34:41,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2023-12-19 07:34:41,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:34:41,881 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:41,892 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 07:34:42,090 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 07:34:42,091 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:34:42,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:34:42,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1980121990, now seen corresponding path program 1 times [2023-12-19 07:34:42,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:34:42,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247242785] [2023-12-19 07:34:42,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:42,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:34:42,174 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:34:42,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422171317] [2023-12-19 07:34:42,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:42,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:34:42,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:34:42,176 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 07:34:42,179 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 07:34:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:34:42,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 1582 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:34:42,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:34:43,187 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23980 trivial. 0 not checked. [2023-12-19 07:34:43,187 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:34:43,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:34:43,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247242785] [2023-12-19 07:34:43,188 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:34:43,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422171317] [2023-12-19 07:34:43,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422171317] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:34:43,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:34:43,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:34:43,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531514365] [2023-12-19 07:34:43,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:34:43,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:34:43,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:34:43,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:34:43,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:34:43,190 INFO L87 Difference]: Start difference. First operand 6345 states and 10967 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-19 07:34:43,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:34:43,550 INFO L93 Difference]: Finished difference Result 16154 states and 27961 transitions. [2023-12-19 07:34:43,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:34:43,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) Word has length 701 [2023-12-19 07:34:43,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:34:43,630 INFO L225 Difference]: With dead ends: 16154 [2023-12-19 07:34:43,630 INFO L226 Difference]: Without dead ends: 9908 [2023-12-19 07:34:43,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 699 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 07:34:43,644 INFO L413 NwaCegarLoop]: 666 mSDtfsCounter, 240 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:34:43,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 1226 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:34:43,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9908 states. [2023-12-19 07:34:44,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9908 to 9906. [2023-12-19 07:34:44,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9906 states, 8690 states have (on average 1.7102416570771002) internal successors, (14862), 8698 states have internal predecessors, (14862), 1135 states have call successors, (1135), 80 states have call predecessors, (1135), 80 states have return successors, (1135), 1127 states have call predecessors, (1135), 1135 states have call successors, (1135) [2023-12-19 07:34:44,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9906 states to 9906 states and 17132 transitions. [2023-12-19 07:34:44,283 INFO L78 Accepts]: Start accepts. Automaton has 9906 states and 17132 transitions. Word has length 701 [2023-12-19 07:34:44,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:34:44,287 INFO L495 AbstractCegarLoop]: Abstraction has 9906 states and 17132 transitions. [2023-12-19 07:34:44,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-19 07:34:44,288 INFO L276 IsEmpty]: Start isEmpty. Operand 9906 states and 17132 transitions. [2023-12-19 07:34:44,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2023-12-19 07:34:44,298 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:34:44,298 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:44,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-19 07:34:44,508 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 07:34:44,508 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:34:44,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:34:44,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1167681786, now seen corresponding path program 1 times [2023-12-19 07:34:44,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:34:44,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658007855] [2023-12-19 07:34:44,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:44,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:34:44,561 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:34:44,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [368626720] [2023-12-19 07:34:44,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:44,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:34:44,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:34:44,563 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 07:34:44,596 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 07:34:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:34:44,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 1584 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 07:34:44,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:34:46,002 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23980 trivial. 0 not checked. [2023-12-19 07:34:46,003 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:34:46,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:34:46,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658007855] [2023-12-19 07:34:46,003 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:34:46,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368626720] [2023-12-19 07:34:46,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368626720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:34:46,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:34:46,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 07:34:46,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654462786] [2023-12-19 07:34:46,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:34:46,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:34:46,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:34:46,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:34:46,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:34:46,008 INFO L87 Difference]: Start difference. First operand 9906 states and 17132 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 6 states have internal predecessors, (154), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-19 07:34:48,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:34:48,634 INFO L93 Difference]: Finished difference Result 40305 states and 70000 transitions. [2023-12-19 07:34:48,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 07:34:48,635 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 6 states have internal predecessors, (154), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) Word has length 701 [2023-12-19 07:34:48,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:34:48,691 INFO L225 Difference]: With dead ends: 40305 [2023-12-19 07:34:48,691 INFO L226 Difference]: Without dead ends: 30528 [2023-12-19 07:34:48,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 695 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2023-12-19 07:34:48,712 INFO L413 NwaCegarLoop]: 1115 mSDtfsCounter, 2203 mSDsluCounter, 2280 mSDsCounter, 0 mSdLazyCounter, 1573 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2203 SdHoareTripleChecker+Valid, 3395 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 1573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:34:48,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2203 Valid, 3395 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 1573 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 07:34:48,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30528 states. [2023-12-19 07:34:49,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30528 to 21880. [2023-12-19 07:34:49,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21880 states, 20024 states have (on average 1.7305233719536557) internal successors, (34652), 20050 states have internal predecessors, (34652), 1720 states have call successors, (1720), 135 states have call predecessors, (1720), 135 states have return successors, (1720), 1694 states have call predecessors, (1720), 1720 states have call successors, (1720) [2023-12-19 07:34:49,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21880 states to 21880 states and 38092 transitions. [2023-12-19 07:34:49,617 INFO L78 Accepts]: Start accepts. Automaton has 21880 states and 38092 transitions. Word has length 701 [2023-12-19 07:34:49,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:34:49,618 INFO L495 AbstractCegarLoop]: Abstraction has 21880 states and 38092 transitions. [2023-12-19 07:34:49,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 6 states have internal predecessors, (154), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-19 07:34:49,619 INFO L276 IsEmpty]: Start isEmpty. Operand 21880 states and 38092 transitions. [2023-12-19 07:34:49,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2023-12-19 07:34:49,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:34:49,638 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:49,649 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 07:34:49,847 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 07:34:49,848 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:34:49,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:34:49,848 INFO L85 PathProgramCache]: Analyzing trace with hash 172988088, now seen corresponding path program 1 times [2023-12-19 07:34:49,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:34:49,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217745966] [2023-12-19 07:34:49,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:49,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:34:49,898 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:34:49,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [825841824] [2023-12-19 07:34:49,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:49,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:34:49,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:34:49,899 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 07:34:49,959 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 07:34:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:34:50,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 1582 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:34:50,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:34:51,045 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23980 trivial. 0 not checked. [2023-12-19 07:34:51,045 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:34:51,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:34:51,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217745966] [2023-12-19 07:34:51,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:34:51,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825841824] [2023-12-19 07:34:51,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825841824] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:34:51,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:34:51,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:34:51,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140673933] [2023-12-19 07:34:51,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:34:51,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:34:51,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:34:51,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:34:51,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:34:51,049 INFO L87 Difference]: Start difference. First operand 21880 states and 38092 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-19 07:34:52,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:34:52,382 INFO L93 Difference]: Finished difference Result 65374 states and 113882 transitions. [2023-12-19 07:34:52,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:34:52,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) Word has length 701 [2023-12-19 07:34:52,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:34:52,513 INFO L225 Difference]: With dead ends: 65374 [2023-12-19 07:34:52,513 INFO L226 Difference]: Without dead ends: 43627 [2023-12-19 07:34:52,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 698 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 07:34:52,562 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 754 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:34:52,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 1134 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:34:52,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43627 states. [2023-12-19 07:34:54,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43627 to 43625. [2023-12-19 07:34:54,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43625 states, 39990 states have (on average 1.7308077019254813) internal successors, (69215), 40041 states have internal predecessors, (69215), 3370 states have call successors, (3370), 264 states have call predecessors, (3370), 264 states have return successors, (3370), 3319 states have call predecessors, (3370), 3370 states have call successors, (3370) [2023-12-19 07:34:54,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43625 states to 43625 states and 75955 transitions. [2023-12-19 07:34:54,497 INFO L78 Accepts]: Start accepts. Automaton has 43625 states and 75955 transitions. Word has length 701 [2023-12-19 07:34:54,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:34:54,498 INFO L495 AbstractCegarLoop]: Abstraction has 43625 states and 75955 transitions. [2023-12-19 07:34:54,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-19 07:34:54,498 INFO L276 IsEmpty]: Start isEmpty. Operand 43625 states and 75955 transitions. [2023-12-19 07:34:54,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2023-12-19 07:34:54,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:34:54,517 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:54,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-19 07:34:54,727 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 07:34:54,728 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:34:54,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:34:54,728 INFO L85 PathProgramCache]: Analyzing trace with hash 174835130, now seen corresponding path program 1 times [2023-12-19 07:34:54,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:34:54,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006079837] [2023-12-19 07:34:54,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:54,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:34:55,014 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:34:55,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1861528450] [2023-12-19 07:34:55,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:34:55,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:34:55,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:34:55,017 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 07:34:55,019 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 07:34:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:34:55,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 1583 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 07:34:55,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:34:56,696 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23980 trivial. 0 not checked. [2023-12-19 07:34:56,696 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:34:56,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:34:56,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006079837] [2023-12-19 07:34:56,697 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:34:56,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861528450] [2023-12-19 07:34:56,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861528450] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:34:56,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:34:56,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 07:34:56,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826914181] [2023-12-19 07:34:56,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:34:56,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 07:34:56,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:34:56,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 07:34:56,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:34:56,699 INFO L87 Difference]: Start difference. First operand 43625 states and 75955 transitions. Second operand has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-19 07:34:59,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:34:59,329 INFO L93 Difference]: Finished difference Result 106496 states and 185032 transitions. [2023-12-19 07:34:59,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 07:34:59,329 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) Word has length 701 [2023-12-19 07:34:59,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:34:59,440 INFO L225 Difference]: With dead ends: 106496 [2023-12-19 07:34:59,441 INFO L226 Difference]: Without dead ends: 62446 [2023-12-19 07:34:59,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 696 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:34:59,470 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 765 mSDsluCounter, 1979 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 2596 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 07:34:59,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 2596 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 07:34:59,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62446 states. [2023-12-19 07:35:02,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62446 to 62317. [2023-12-19 07:35:02,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62317 states, 57223 states have (on average 1.7215280569001974) internal successors, (98511), 57305 states have internal predecessors, (98511), 4726 states have call successors, (4726), 367 states have call predecessors, (4726), 367 states have return successors, (4726), 4644 states have call predecessors, (4726), 4726 states have call successors, (4726) [2023-12-19 07:35:02,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62317 states to 62317 states and 107963 transitions. [2023-12-19 07:35:02,547 INFO L78 Accepts]: Start accepts. Automaton has 62317 states and 107963 transitions. Word has length 701 [2023-12-19 07:35:02,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:35:02,548 INFO L495 AbstractCegarLoop]: Abstraction has 62317 states and 107963 transitions. [2023-12-19 07:35:02,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 5 states have internal predecessors, (154), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-19 07:35:02,548 INFO L276 IsEmpty]: Start isEmpty. Operand 62317 states and 107963 transitions. [2023-12-19 07:35:02,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2023-12-19 07:35:02,609 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:35:02,609 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:35:02,623 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 07:35:02,816 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 07:35:02,817 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:35:02,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:35:02,818 INFO L85 PathProgramCache]: Analyzing trace with hash -204676680, now seen corresponding path program 1 times [2023-12-19 07:35:02,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:35:02,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315936354] [2023-12-19 07:35:02,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:02,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:35:02,915 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:35:02,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [950461770] [2023-12-19 07:35:02,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:02,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:35:02,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:35:02,920 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 07:35:02,944 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 07:35:03,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:35:03,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 1582 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 07:35:03,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:35:04,696 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 12093 proven. 159 refuted. 0 times theorem prover too weak. 11728 trivial. 0 not checked. [2023-12-19 07:35:04,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:35:05,451 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 168 proven. 159 refuted. 0 times theorem prover too weak. 23653 trivial. 0 not checked. [2023-12-19 07:35:05,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:35:05,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315936354] [2023-12-19 07:35:05,451 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:35:05,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950461770] [2023-12-19 07:35:05,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950461770] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:35:05,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:35:05,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-12-19 07:35:05,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779342432] [2023-12-19 07:35:05,452 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:35:05,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 07:35:05,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:35:05,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 07:35:05,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-12-19 07:35:05,455 INFO L87 Difference]: Start difference. First operand 62317 states and 107963 transitions. Second operand has 14 states, 14 states have (on average 22.357142857142858) internal successors, (313), 14 states have internal predecessors, (313), 4 states have call successors, (220), 3 states have call predecessors, (220), 5 states have return successors, (220), 4 states have call predecessors, (220), 4 states have call successors, (220) [2023-12-19 07:35:11,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:35:11,272 INFO L93 Difference]: Finished difference Result 137545 states and 237174 transitions. [2023-12-19 07:35:11,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-19 07:35:11,273 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 22.357142857142858) internal successors, (313), 14 states have internal predecessors, (313), 4 states have call successors, (220), 3 states have call predecessors, (220), 5 states have return successors, (220), 4 states have call predecessors, (220), 4 states have call successors, (220) Word has length 701 [2023-12-19 07:35:11,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:35:11,558 INFO L225 Difference]: With dead ends: 137545 [2023-12-19 07:35:11,559 INFO L226 Difference]: Without dead ends: 67223 [2023-12-19 07:35:11,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1423 GetRequests, 1391 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=299, Invalid=823, Unknown=0, NotChecked=0, Total=1122 [2023-12-19 07:35:11,610 INFO L413 NwaCegarLoop]: 1170 mSDtfsCounter, 3102 mSDsluCounter, 3580 mSDsCounter, 0 mSdLazyCounter, 2926 mSolverCounterSat, 1128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3161 SdHoareTripleChecker+Valid, 4750 SdHoareTripleChecker+Invalid, 4054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1128 IncrementalHoareTripleChecker+Valid, 2926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 07:35:11,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3161 Valid, 4750 Invalid, 4054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1128 Valid, 2926 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 07:35:11,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67223 states. [2023-12-19 07:35:15,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67223 to 62433. [2023-12-19 07:35:15,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62433 states, 54109 states have (on average 1.6835092128851024) internal successors, (91093), 54247 states have internal predecessors, (91093), 7678 states have call successors, (7678), 645 states have call predecessors, (7678), 645 states have return successors, (7678), 7540 states have call predecessors, (7678), 7678 states have call successors, (7678) [2023-12-19 07:35:15,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62433 states to 62433 states and 106449 transitions. [2023-12-19 07:35:15,661 INFO L78 Accepts]: Start accepts. Automaton has 62433 states and 106449 transitions. Word has length 701 [2023-12-19 07:35:15,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:35:15,662 INFO L495 AbstractCegarLoop]: Abstraction has 62433 states and 106449 transitions. [2023-12-19 07:35:15,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.357142857142858) internal successors, (313), 14 states have internal predecessors, (313), 4 states have call successors, (220), 3 states have call predecessors, (220), 5 states have return successors, (220), 4 states have call predecessors, (220), 4 states have call successors, (220) [2023-12-19 07:35:15,663 INFO L276 IsEmpty]: Start isEmpty. Operand 62433 states and 106449 transitions. [2023-12-19 07:35:15,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 703 [2023-12-19 07:35:15,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:35:15,680 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:35:15,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-19 07:35:15,890 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 07:35:15,891 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:35:15,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:35:15,891 INFO L85 PathProgramCache]: Analyzing trace with hash 258191458, now seen corresponding path program 1 times [2023-12-19 07:35:15,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:35:15,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421614463] [2023-12-19 07:35:15,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:15,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:35:15,940 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:35:15,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1769595140] [2023-12-19 07:35:15,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:15,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:35:15,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:35:15,961 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 07:35:15,988 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 07:35:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:35:16,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 07:35:16,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:35:16,693 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 11287 proven. 120 refuted. 0 times theorem prover too weak. 12573 trivial. 0 not checked. [2023-12-19 07:35:16,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:35:17,048 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 207 proven. 120 refuted. 0 times theorem prover too weak. 23653 trivial. 0 not checked. [2023-12-19 07:35:17,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:35:17,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421614463] [2023-12-19 07:35:17,049 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:35:17,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769595140] [2023-12-19 07:35:17,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769595140] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:35:17,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:35:17,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-19 07:35:17,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736819656] [2023-12-19 07:35:17,050 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:35:17,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 07:35:17,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:35:17,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 07:35:17,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 07:35:17,056 INFO L87 Difference]: Start difference. First operand 62433 states and 106449 transitions. Second operand has 9 states, 9 states have (on average 20.88888888888889) internal successors, (188), 9 states have internal predecessors, (188), 2 states have call successors, (150), 2 states have call predecessors, (150), 4 states have return successors, (151), 2 states have call predecessors, (151), 2 states have call successors, (151) [2023-12-19 07:35:21,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:35:21,817 INFO L93 Difference]: Finished difference Result 119762 states and 203382 transitions. [2023-12-19 07:35:21,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 07:35:21,818 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.88888888888889) internal successors, (188), 9 states have internal predecessors, (188), 2 states have call successors, (150), 2 states have call predecessors, (150), 4 states have return successors, (151), 2 states have call predecessors, (151), 2 states have call successors, (151) Word has length 702 [2023-12-19 07:35:21,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:35:21,960 INFO L225 Difference]: With dead ends: 119762 [2023-12-19 07:35:21,960 INFO L226 Difference]: Without dead ends: 57474 [2023-12-19 07:35:22,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1414 GetRequests, 1395 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2023-12-19 07:35:22,021 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 1005 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 1359 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 2318 SdHoareTripleChecker+Invalid, 1724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 1359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 07:35:22,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 2318 Invalid, 1724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 1359 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 07:35:22,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57474 states. [2023-12-19 07:35:25,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57474 to 50908. [2023-12-19 07:35:25,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50908 states, 44088 states have (on average 1.6745826528760661) internal successors, (73829), 44196 states have internal predecessors, (73829), 6295 states have call successors, (6295), 524 states have call predecessors, (6295), 524 states have return successors, (6295), 6187 states have call predecessors, (6295), 6295 states have call successors, (6295) [2023-12-19 07:35:25,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50908 states to 50908 states and 86419 transitions. [2023-12-19 07:35:25,361 INFO L78 Accepts]: Start accepts. Automaton has 50908 states and 86419 transitions. Word has length 702 [2023-12-19 07:35:25,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:35:25,362 INFO L495 AbstractCegarLoop]: Abstraction has 50908 states and 86419 transitions. [2023-12-19 07:35:25,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.88888888888889) internal successors, (188), 9 states have internal predecessors, (188), 2 states have call successors, (150), 2 states have call predecessors, (150), 4 states have return successors, (151), 2 states have call predecessors, (151), 2 states have call successors, (151) [2023-12-19 07:35:25,362 INFO L276 IsEmpty]: Start isEmpty. Operand 50908 states and 86419 transitions. [2023-12-19 07:35:25,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2023-12-19 07:35:25,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:35:25,375 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:35:25,401 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 07:35:25,584 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 07:35:25,585 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:35:25,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:35:25,586 INFO L85 PathProgramCache]: Analyzing trace with hash -2083338541, now seen corresponding path program 1 times [2023-12-19 07:35:25,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:35:25,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746282111] [2023-12-19 07:35:25,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:25,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:35:25,627 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:35:25,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [431252745] [2023-12-19 07:35:25,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:35:25,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:35:25,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:35:25,628 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 07:35:25,631 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 07:35:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:35:26,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 07:35:26,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:35:27,010 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 14282 proven. 231 refuted. 0 times theorem prover too weak. 9467 trivial. 0 not checked. [2023-12-19 07:35:27,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:35:27,962 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 417 proven. 234 refuted. 0 times theorem prover too weak. 23329 trivial. 0 not checked. [2023-12-19 07:35:27,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:35:27,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746282111] [2023-12-19 07:35:27,963 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:35:27,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431252745] [2023-12-19 07:35:27,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431252745] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:35:27,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:35:27,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-12-19 07:35:27,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741009712] [2023-12-19 07:35:27,963 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:35:27,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-19 07:35:27,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:35:27,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-19 07:35:27,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2023-12-19 07:35:27,966 INFO L87 Difference]: Start difference. First operand 50908 states and 86419 transitions. Second operand has 22 states, 22 states have (on average 11.863636363636363) internal successors, (261), 22 states have internal predecessors, (261), 5 states have call successors, (159), 3 states have call predecessors, (159), 7 states have return successors, (160), 5 states have call predecessors, (160), 5 states have call successors, (160) [2023-12-19 07:35:54,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:35:54,612 INFO L93 Difference]: Finished difference Result 352668 states and 588079 transitions. [2023-12-19 07:35:54,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-12-19 07:35:54,613 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 11.863636363636363) internal successors, (261), 22 states have internal predecessors, (261), 5 states have call successors, (159), 3 states have call predecessors, (159), 7 states have return successors, (160), 5 states have call predecessors, (160), 5 states have call successors, (160) Word has length 703 [2023-12-19 07:35:54,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:35:55,633 INFO L225 Difference]: With dead ends: 352668 [2023-12-19 07:35:55,633 INFO L226 Difference]: Without dead ends: 301871 [2023-12-19 07:35:55,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1470 GetRequests, 1391 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1996 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1509, Invalid=4971, Unknown=0, NotChecked=0, Total=6480 [2023-12-19 07:35:55,819 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 5427 mSDsluCounter, 3963 mSDsCounter, 0 mSdLazyCounter, 4645 mSolverCounterSat, 2016 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5531 SdHoareTripleChecker+Valid, 4648 SdHoareTripleChecker+Invalid, 6661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2016 IncrementalHoareTripleChecker+Valid, 4645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:35:55,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5531 Valid, 4648 Invalid, 6661 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2016 Valid, 4645 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-19 07:35:56,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301871 states. [2023-12-19 07:36:15,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301871 to 259234. [2023-12-19 07:36:16,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259234 states, 225393 states have (on average 1.6515464100482269) internal successors, (372247), 226126 states have internal predecessors, (372247), 31054 states have call successors, (31054), 2786 states have call predecessors, (31054), 2786 states have return successors, (31054), 30321 states have call predecessors, (31054), 31054 states have call successors, (31054) [2023-12-19 07:36:17,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259234 states to 259234 states and 434355 transitions. [2023-12-19 07:36:17,764 INFO L78 Accepts]: Start accepts. Automaton has 259234 states and 434355 transitions. Word has length 703 [2023-12-19 07:36:17,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:36:17,765 INFO L495 AbstractCegarLoop]: Abstraction has 259234 states and 434355 transitions. [2023-12-19 07:36:17,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.863636363636363) internal successors, (261), 22 states have internal predecessors, (261), 5 states have call successors, (159), 3 states have call predecessors, (159), 7 states have return successors, (160), 5 states have call predecessors, (160), 5 states have call successors, (160) [2023-12-19 07:36:17,766 INFO L276 IsEmpty]: Start isEmpty. Operand 259234 states and 434355 transitions. [2023-12-19 07:36:17,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2023-12-19 07:36:17,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:36:17,856 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:36:17,880 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 07:36:18,067 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 07:36:18,068 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:36:18,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:36:18,068 INFO L85 PathProgramCache]: Analyzing trace with hash -349234091, now seen corresponding path program 1 times [2023-12-19 07:36:18,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:36:18,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423786375] [2023-12-19 07:36:18,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:18,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:36:18,121 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:36:18,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [740069562] [2023-12-19 07:36:18,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:36:18,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:36:18,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:36:18,123 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 07:36:18,125 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 07:36:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:36:18,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:36:18,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:36:19,234 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23980 trivial. 0 not checked. [2023-12-19 07:36:19,235 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:36:19,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:36:19,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423786375] [2023-12-19 07:36:19,235 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:36:19,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740069562] [2023-12-19 07:36:19,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740069562] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:36:19,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:36:19,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 07:36:19,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17833083] [2023-12-19 07:36:19,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:36:19,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 07:36:19,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:36:19,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 07:36:19,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:36:19,237 INFO L87 Difference]: Start difference. First operand 259234 states and 434355 transitions. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110)