/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-250_file-36.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 06:51:57,696 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 06:51:57,752 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 06:51:57,755 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 06:51:57,755 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 06:51:57,777 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 06:51:57,777 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 06:51:57,777 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 06:51:57,777 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 06:51:57,778 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 06:51:57,778 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 06:51:57,778 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 06:51:57,779 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 06:51:57,779 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 06:51:57,779 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 06:51:57,779 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 06:51:57,780 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 06:51:57,780 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 06:51:57,780 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 06:51:57,780 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 06:51:57,781 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 06:51:57,781 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 06:51:57,781 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 06:51:57,782 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 06:51:57,782 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 06:51:57,782 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 06:51:57,782 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 06:51:57,782 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 06:51:57,783 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 06:51:57,783 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 06:51:57,783 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 06:51:57,783 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 06:51:57,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 06:51:57,784 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 06:51:57,784 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 06:51:57,784 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 06:51:57,785 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 06:51:57,785 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 06:51:57,785 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 06:51:57,785 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 06:51:57,786 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 06:51:57,792 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 06:51:57,792 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 06:51:57,792 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 06:51:57,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 06:51:57,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 06:51:57,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 06:51:57,943 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 06:51:57,943 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 06:51:57,944 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-36.i [2023-12-19 06:51:58,977 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 06:51:59,203 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 06:51:59,203 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-36.i [2023-12-19 06:51:59,212 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/212aac5d8/26a5729aa44b4f598d1bd4c5d6e56dcb/FLAGe903ad11a [2023-12-19 06:51:59,225 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/212aac5d8/26a5729aa44b4f598d1bd4c5d6e56dcb [2023-12-19 06:51:59,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 06:51:59,228 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 06:51:59,229 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 06:51:59,229 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 06:51:59,234 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 06:51:59,234 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:51:59" (1/1) ... [2023-12-19 06:51:59,235 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d234b9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:59, skipping insertion in model container [2023-12-19 06:51:59,235 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:51:59" (1/1) ... [2023-12-19 06:51:59,269 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 06:51:59,394 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-250_file-36.i[916,929] [2023-12-19 06:51:59,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 06:51:59,519 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 06:51:59,527 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-250_file-36.i[916,929] [2023-12-19 06:51:59,652 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 06:51:59,668 INFO L206 MainTranslator]: Completed translation [2023-12-19 06:51:59,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:59 WrapperNode [2023-12-19 06:51:59,671 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 06:51:59,672 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 06:51:59,672 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 06:51:59,672 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 06:51:59,676 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:59" (1/1) ... [2023-12-19 06:51:59,698 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:59" (1/1) ... [2023-12-19 06:51:59,761 INFO L138 Inliner]: procedures = 26, calls = 105, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 611 [2023-12-19 06:51:59,762 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 06:51:59,763 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 06:51:59,763 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 06:51:59,763 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 06:51:59,770 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:59" (1/1) ... [2023-12-19 06:51:59,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:59" (1/1) ... [2023-12-19 06:51:59,776 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:59" (1/1) ... [2023-12-19 06:51:59,795 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 06:51:59,795 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:59" (1/1) ... [2023-12-19 06:51:59,795 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:59" (1/1) ... [2023-12-19 06:51:59,812 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:59" (1/1) ... [2023-12-19 06:51:59,816 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:59" (1/1) ... [2023-12-19 06:51:59,819 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:59" (1/1) ... [2023-12-19 06:51:59,821 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:59" (1/1) ... [2023-12-19 06:51:59,827 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 06:51:59,828 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 06:51:59,828 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 06:51:59,828 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 06:51:59,829 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:59" (1/1) ... [2023-12-19 06:51:59,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 06:51:59,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:51:59,865 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 06:51:59,882 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 06:51:59,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 06:51:59,898 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 06:51:59,898 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 06:51:59,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 06:51:59,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 06:51:59,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 06:51:59,999 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 06:52:00,001 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 06:52:00,548 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 06:52:00,590 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 06:52:00,590 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 06:52:00,590 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:52:00 BoogieIcfgContainer [2023-12-19 06:52:00,591 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 06:52:00,592 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 06:52:00,593 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 06:52:00,595 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 06:52:00,595 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 06:51:59" (1/3) ... [2023-12-19 06:52:00,596 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9d63ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:52:00, skipping insertion in model container [2023-12-19 06:52:00,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:51:59" (2/3) ... [2023-12-19 06:52:00,596 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9d63ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:52:00, skipping insertion in model container [2023-12-19 06:52:00,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:52:00" (3/3) ... [2023-12-19 06:52:00,597 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-36.i [2023-12-19 06:52:00,609 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 06:52:00,609 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 06:52:00,655 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 06:52:00,660 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;@5c65ae19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 06:52:00,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 06:52:00,667 INFO L276 IsEmpty]: Start isEmpty. Operand has 244 states, 149 states have (on average 1.5570469798657718) internal successors, (232), 150 states have internal predecessors, (232), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-19 06:52:00,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2023-12-19 06:52:00,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:52:00,701 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:52:00,702 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:52:00,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:52:00,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1678376901, now seen corresponding path program 1 times [2023-12-19 06:52:00,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:52:00,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149540043] [2023-12-19 06:52:00,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:52:00,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:52:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:52:00,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:52:00,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149540043] [2023-12-19 06:52:00,994 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 06:52:00,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728468346] [2023-12-19 06:52:00,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:52:00,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:52:00,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:52:00,997 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 06:52:01,024 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 06:52:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:52:01,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 1241 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 06:52:01,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:52:01,360 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 16562 trivial. 0 not checked. [2023-12-19 06:52:01,361 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:52:01,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728468346] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:52:01,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:52:01,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 06:52:01,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111542981] [2023-12-19 06:52:01,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:52:01,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 06:52:01,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:52:01,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 06:52:01,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 06:52:01,404 INFO L87 Difference]: Start difference. First operand has 244 states, 149 states have (on average 1.5570469798657718) internal successors, (232), 150 states have internal predecessors, (232), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) Second operand has 2 states, 2 states have (on average 57.5) internal successors, (115), 2 states have internal predecessors, (115), 2 states have call successors, (92), 2 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 2 states have call successors, (92) [2023-12-19 06:52:01,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:52:01,499 INFO L93 Difference]: Finished difference Result 482 states and 917 transitions. [2023-12-19 06:52:01,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 06:52:01,502 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 57.5) internal successors, (115), 2 states have internal predecessors, (115), 2 states have call successors, (92), 2 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 2 states have call successors, (92) Word has length 570 [2023-12-19 06:52:01,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:52:01,510 INFO L225 Difference]: With dead ends: 482 [2023-12-19 06:52:01,511 INFO L226 Difference]: Without dead ends: 239 [2023-12-19 06:52:01,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 569 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 06:52:01,520 INFO L413 NwaCegarLoop]: 399 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, 399 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 06:52:01,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 399 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:52:01,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-12-19 06:52:01,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2023-12-19 06:52:01,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 145 states have (on average 1.5034482758620689) internal successors, (218), 145 states have internal predecessors, (218), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-19 06:52:01,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 402 transitions. [2023-12-19 06:52:01,612 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 402 transitions. Word has length 570 [2023-12-19 06:52:01,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:52:01,613 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 402 transitions. [2023-12-19 06:52:01,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 57.5) internal successors, (115), 2 states have internal predecessors, (115), 2 states have call successors, (92), 2 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 2 states have call successors, (92) [2023-12-19 06:52:01,613 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 402 transitions. [2023-12-19 06:52:01,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2023-12-19 06:52:01,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:52:01,637 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:52:01,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 06:52:01,844 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 06:52:01,845 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:52:01,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:52:01,846 INFO L85 PathProgramCache]: Analyzing trace with hash -17955113, now seen corresponding path program 1 times [2023-12-19 06:52:01,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:52:01,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377050318] [2023-12-19 06:52:01,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:52:01,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:52:01,961 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:52:01,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1988710473] [2023-12-19 06:52:01,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:52:01,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:52:01,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:52:01,989 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 06:52:02,029 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 06:52:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:52:02,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 1241 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 06:52:02,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:52:02,406 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2023-12-19 06:52:02,406 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:52:02,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:52:02,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377050318] [2023-12-19 06:52:02,407 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:52:02,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988710473] [2023-12-19 06:52:02,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988710473] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:52:02,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:52:02,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 06:52:02,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125902074] [2023-12-19 06:52:02,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:52:02,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 06:52:02,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:52:02,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 06:52:02,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 06:52:02,412 INFO L87 Difference]: Start difference. First operand 239 states and 402 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-12-19 06:52:02,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:52:02,599 INFO L93 Difference]: Finished difference Result 740 states and 1252 transitions. [2023-12-19 06:52:02,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 06:52:02,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 570 [2023-12-19 06:52:02,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:52:02,604 INFO L225 Difference]: With dead ends: 740 [2023-12-19 06:52:02,604 INFO L226 Difference]: Without dead ends: 502 [2023-12-19 06:52:02,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 567 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 06:52:02,606 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 435 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 06:52:02,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 1091 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 06:52:02,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2023-12-19 06:52:02,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 496. [2023-12-19 06:52:02,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 350 states have (on average 1.6028571428571428) internal successors, (561), 352 states have internal predecessors, (561), 142 states have call successors, (142), 3 states have call predecessors, (142), 3 states have return successors, (142), 140 states have call predecessors, (142), 142 states have call successors, (142) [2023-12-19 06:52:02,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 845 transitions. [2023-12-19 06:52:02,667 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 845 transitions. Word has length 570 [2023-12-19 06:52:02,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:52:02,669 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 845 transitions. [2023-12-19 06:52:02,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-12-19 06:52:02,669 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 845 transitions. [2023-12-19 06:52:02,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2023-12-19 06:52:02,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:52:02,673 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:52:02,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 06:52:02,880 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 06:52:02,881 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:52:02,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:52:02,881 INFO L85 PathProgramCache]: Analyzing trace with hash 45789391, now seen corresponding path program 1 times [2023-12-19 06:52:02,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:52:02,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252542395] [2023-12-19 06:52:02,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:52:02,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:52:02,957 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:52:02,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [721147634] [2023-12-19 06:52:02,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:52:02,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:52:02,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:52:02,958 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 06:52:02,983 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 06:52:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:52:03,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 1241 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 06:52:03,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:52:03,235 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2023-12-19 06:52:03,235 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:52:03,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:52:03,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252542395] [2023-12-19 06:52:03,235 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:52:03,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721147634] [2023-12-19 06:52:03,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721147634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:52:03,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:52:03,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 06:52:03,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344841789] [2023-12-19 06:52:03,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:52:03,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:52:03,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:52:03,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:52:03,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:52:03,238 INFO L87 Difference]: Start difference. First operand 496 states and 845 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-12-19 06:52:03,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:52:03,293 INFO L93 Difference]: Finished difference Result 1486 states and 2533 transitions. [2023-12-19 06:52:03,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:52:03,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 570 [2023-12-19 06:52:03,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:52:03,300 INFO L225 Difference]: With dead ends: 1486 [2023-12-19 06:52:03,300 INFO L226 Difference]: Without dead ends: 991 [2023-12-19 06:52:03,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 568 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 06:52:03,303 INFO L413 NwaCegarLoop]: 708 mSDtfsCounter, 381 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:52:03,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 1101 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:52:03,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2023-12-19 06:52:03,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 989. [2023-12-19 06:52:03,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 698 states have (on average 1.6002865329512894) internal successors, (1117), 702 states have internal predecessors, (1117), 284 states have call successors, (284), 6 states have call predecessors, (284), 6 states have return successors, (284), 280 states have call predecessors, (284), 284 states have call successors, (284) [2023-12-19 06:52:03,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1685 transitions. [2023-12-19 06:52:03,408 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1685 transitions. Word has length 570 [2023-12-19 06:52:03,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:52:03,409 INFO L495 AbstractCegarLoop]: Abstraction has 989 states and 1685 transitions. [2023-12-19 06:52:03,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-12-19 06:52:03,409 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1685 transitions. [2023-12-19 06:52:03,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2023-12-19 06:52:03,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:52:03,414 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:52:03,428 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 06:52:03,621 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 06:52:03,622 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:52:03,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:52:03,622 INFO L85 PathProgramCache]: Analyzing trace with hash -975278963, now seen corresponding path program 1 times [2023-12-19 06:52:03,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:52:03,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243201635] [2023-12-19 06:52:03,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:52:03,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:52:03,683 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:52:03,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1596465561] [2023-12-19 06:52:03,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:52:03,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:52:03,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:52:03,685 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 06:52:03,687 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 06:52:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:52:03,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 1240 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 06:52:03,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:52:04,020 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2023-12-19 06:52:04,020 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:52:04,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:52:04,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243201635] [2023-12-19 06:52:04,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:52:04,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596465561] [2023-12-19 06:52:04,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596465561] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:52:04,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:52:04,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 06:52:04,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722454920] [2023-12-19 06:52:04,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:52:04,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:52:04,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:52:04,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:52:04,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:52:04,023 INFO L87 Difference]: Start difference. First operand 989 states and 1685 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-12-19 06:52:04,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:52:04,110 INFO L93 Difference]: Finished difference Result 2723 states and 4629 transitions. [2023-12-19 06:52:04,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:52:04,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 570 [2023-12-19 06:52:04,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:52:04,118 INFO L225 Difference]: With dead ends: 2723 [2023-12-19 06:52:04,119 INFO L226 Difference]: Without dead ends: 1735 [2023-12-19 06:52:04,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 568 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 06:52:04,123 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 198 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:52:04,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 879 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:52:04,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2023-12-19 06:52:04,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1731. [2023-12-19 06:52:04,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1258 states have (on average 1.5930047694753577) internal successors, (2004), 1268 states have internal predecessors, (2004), 460 states have call successors, (460), 12 states have call predecessors, (460), 12 states have return successors, (460), 450 states have call predecessors, (460), 460 states have call successors, (460) [2023-12-19 06:52:04,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2924 transitions. [2023-12-19 06:52:04,225 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2924 transitions. Word has length 570 [2023-12-19 06:52:04,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:52:04,226 INFO L495 AbstractCegarLoop]: Abstraction has 1731 states and 2924 transitions. [2023-12-19 06:52:04,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-12-19 06:52:04,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2924 transitions. [2023-12-19 06:52:04,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2023-12-19 06:52:04,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:52:04,233 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:52:04,243 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 06:52:04,441 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 06:52:04,442 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:52:04,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:52:04,442 INFO L85 PathProgramCache]: Analyzing trace with hash 2039824655, now seen corresponding path program 1 times [2023-12-19 06:52:04,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:52:04,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755455642] [2023-12-19 06:52:04,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:52:04,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:52:04,489 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:52:04,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [456757738] [2023-12-19 06:52:04,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:52:04,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:52:04,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:52:04,490 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 06:52:04,493 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 06:52:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:52:04,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 1239 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 06:52:04,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:52:04,791 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2023-12-19 06:52:04,791 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:52:04,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:52:04,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755455642] [2023-12-19 06:52:04,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:52:04,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456757738] [2023-12-19 06:52:04,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456757738] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:52:04,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:52:04,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 06:52:04,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584049043] [2023-12-19 06:52:04,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:52:04,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:52:04,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:52:04,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:52:04,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:52:04,799 INFO L87 Difference]: Start difference. First operand 1731 states and 2924 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-12-19 06:52:04,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:52:04,869 INFO L93 Difference]: Finished difference Result 3667 states and 6184 transitions. [2023-12-19 06:52:04,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:52:04,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 570 [2023-12-19 06:52:04,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:52:04,877 INFO L225 Difference]: With dead ends: 3667 [2023-12-19 06:52:04,877 INFO L226 Difference]: Without dead ends: 1937 [2023-12-19 06:52:04,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 568 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 06:52:04,881 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 25 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:52:04,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 781 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:52:04,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1937 states. [2023-12-19 06:52:04,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1937 to 1887. [2023-12-19 06:52:04,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1887 states, 1414 states have (on average 1.5785007072135786) internal successors, (2232), 1424 states have internal predecessors, (2232), 460 states have call successors, (460), 12 states have call predecessors, (460), 12 states have return successors, (460), 450 states have call predecessors, (460), 460 states have call successors, (460) [2023-12-19 06:52:04,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 3152 transitions. [2023-12-19 06:52:04,972 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 3152 transitions. Word has length 570 [2023-12-19 06:52:04,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:52:04,973 INFO L495 AbstractCegarLoop]: Abstraction has 1887 states and 3152 transitions. [2023-12-19 06:52:04,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-12-19 06:52:04,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 3152 transitions. [2023-12-19 06:52:04,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2023-12-19 06:52:04,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:52:04,977 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:52:04,998 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 06:52:05,185 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 06:52:05,185 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:52:05,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:52:05,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1338760077, now seen corresponding path program 1 times [2023-12-19 06:52:05,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:52:05,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518210044] [2023-12-19 06:52:05,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:52:05,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:52:05,233 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:52:05,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1472729847] [2023-12-19 06:52:05,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:52:05,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:52:05,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:52:05,234 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 06:52:05,236 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 06:52:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:52:05,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 1240 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 06:52:05,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:52:05,648 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2023-12-19 06:52:05,648 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:52:05,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:52:05,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518210044] [2023-12-19 06:52:05,649 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:52:05,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472729847] [2023-12-19 06:52:05,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472729847] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:52:05,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:52:05,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 06:52:05,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981860503] [2023-12-19 06:52:05,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:52:05,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 06:52:05,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:52:05,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 06:52:05,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-19 06:52:05,651 INFO L87 Difference]: Start difference. First operand 1887 states and 3152 transitions. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-12-19 06:52:07,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:52:07,308 INFO L93 Difference]: Finished difference Result 10161 states and 16809 transitions. [2023-12-19 06:52:07,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 06:52:07,309 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 570 [2023-12-19 06:52:07,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:52:07,335 INFO L225 Difference]: With dead ends: 10161 [2023-12-19 06:52:07,335 INFO L226 Difference]: Without dead ends: 8275 [2023-12-19 06:52:07,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 562 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-12-19 06:52:07,340 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 1407 mSDsluCounter, 2948 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1407 SdHoareTripleChecker+Valid, 3571 SdHoareTripleChecker+Invalid, 1838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 491 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 06:52:07,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1407 Valid, 3571 Invalid, 1838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [491 Valid, 1347 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 06:52:07,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8275 states. [2023-12-19 06:52:07,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8275 to 6929. [2023-12-19 06:52:07,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6929 states, 5242 states have (on average 1.5635253719954216) internal successors, (8196), 5288 states have internal predecessors, (8196), 1636 states have call successors, (1636), 50 states have call predecessors, (1636), 50 states have return successors, (1636), 1590 states have call predecessors, (1636), 1636 states have call successors, (1636) [2023-12-19 06:52:07,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6929 states to 6929 states and 11468 transitions. [2023-12-19 06:52:07,966 INFO L78 Accepts]: Start accepts. Automaton has 6929 states and 11468 transitions. Word has length 570 [2023-12-19 06:52:07,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:52:07,967 INFO L495 AbstractCegarLoop]: Abstraction has 6929 states and 11468 transitions. [2023-12-19 06:52:07,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-12-19 06:52:07,967 INFO L276 IsEmpty]: Start isEmpty. Operand 6929 states and 11468 transitions. [2023-12-19 06:52:07,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2023-12-19 06:52:07,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:52:07,978 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:52:07,991 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 06:52:08,187 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 06:52:08,188 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:52:08,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:52:08,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1479308687, now seen corresponding path program 1 times [2023-12-19 06:52:08,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:52:08,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076276461] [2023-12-19 06:52:08,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:52:08,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:52:08,244 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:52:08,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [990205052] [2023-12-19 06:52:08,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:52:08,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:52:08,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:52:08,246 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 06:52:08,260 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 06:52:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:52:08,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 1238 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 06:52:08,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:52:09,171 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2023-12-19 06:52:09,171 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:52:09,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:52:09,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076276461] [2023-12-19 06:52:09,172 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:52:09,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990205052] [2023-12-19 06:52:09,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990205052] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:52:09,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:52:09,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 06:52:09,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821590073] [2023-12-19 06:52:09,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:52:09,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:52:09,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:52:09,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:52:09,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:52:09,174 INFO L87 Difference]: Start difference. First operand 6929 states and 11468 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-12-19 06:52:09,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:52:09,729 INFO L93 Difference]: Finished difference Result 20785 states and 34402 transitions. [2023-12-19 06:52:09,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:52:09,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 570 [2023-12-19 06:52:09,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:52:09,791 INFO L225 Difference]: With dead ends: 20785 [2023-12-19 06:52:09,792 INFO L226 Difference]: Without dead ends: 13857 [2023-12-19 06:52:09,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 568 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 06:52:09,809 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 126 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:52:09,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 790 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:52:09,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13857 states. [2023-12-19 06:52:10,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13857 to 13855. [2023-12-19 06:52:10,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13855 states, 10482 states have (on average 1.5590536157221904) internal successors, (16342), 10574 states have internal predecessors, (16342), 3272 states have call successors, (3272), 100 states have call predecessors, (3272), 100 states have return successors, (3272), 3180 states have call predecessors, (3272), 3272 states have call successors, (3272) [2023-12-19 06:52:10,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13855 states to 13855 states and 22886 transitions. [2023-12-19 06:52:10,674 INFO L78 Accepts]: Start accepts. Automaton has 13855 states and 22886 transitions. Word has length 570 [2023-12-19 06:52:10,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:52:10,675 INFO L495 AbstractCegarLoop]: Abstraction has 13855 states and 22886 transitions. [2023-12-19 06:52:10,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-12-19 06:52:10,676 INFO L276 IsEmpty]: Start isEmpty. Operand 13855 states and 22886 transitions. [2023-12-19 06:52:10,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2023-12-19 06:52:10,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:52:10,705 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:52:10,729 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 06:52:10,912 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 06:52:10,913 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:52:10,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:52:10,914 INFO L85 PathProgramCache]: Analyzing trace with hash -326129647, now seen corresponding path program 1 times [2023-12-19 06:52:10,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:52:10,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140179815] [2023-12-19 06:52:10,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:52:10,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:52:10,992 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:52:10,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1106463639] [2023-12-19 06:52:10,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:52:10,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:52:10,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:52:11,006 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 06:52:11,026 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 06:52:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:52:11,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 1236 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 06:52:11,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:52:11,635 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 8407 proven. 147 refuted. 0 times theorem prover too weak. 8190 trivial. 0 not checked. [2023-12-19 06:52:11,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:52:11,971 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 126 proven. 147 refuted. 0 times theorem prover too weak. 16471 trivial. 0 not checked. [2023-12-19 06:52:11,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:52:11,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140179815] [2023-12-19 06:52:11,972 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:52:11,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106463639] [2023-12-19 06:52:11,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106463639] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:52:11,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:52:11,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 06:52:11,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693241926] [2023-12-19 06:52:11,972 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:52:11,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 06:52:11,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:52:11,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 06:52:11,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 06:52:11,974 INFO L87 Difference]: Start difference. First operand 13855 states and 22886 transitions. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (141), 2 states have call predecessors, (141), 4 states have return successors, (142), 2 states have call predecessors, (142), 2 states have call successors, (142) [2023-12-19 06:52:12,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:52:12,968 INFO L93 Difference]: Finished difference Result 27965 states and 46011 transitions. [2023-12-19 06:52:12,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 06:52:12,969 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (141), 2 states have call predecessors, (141), 4 states have return successors, (142), 2 states have call predecessors, (142), 2 states have call successors, (142) Word has length 570 [2023-12-19 06:52:12,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:52:13,007 INFO L225 Difference]: With dead ends: 27965 [2023-12-19 06:52:13,007 INFO L226 Difference]: Without dead ends: 14111 [2023-12-19 06:52:13,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1142 GetRequests, 1132 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 06:52:13,037 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 340 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 06:52:13,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 714 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 06:52:13,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14111 states. [2023-12-19 06:52:13,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14111 to 13919. [2023-12-19 06:52:13,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13919 states, 10530 states have (on average 1.5473884140550807) internal successors, (16294), 10622 states have internal predecessors, (16294), 3272 states have call successors, (3272), 116 states have call predecessors, (3272), 116 states have return successors, (3272), 3180 states have call predecessors, (3272), 3272 states have call successors, (3272) [2023-12-19 06:52:13,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13919 states to 13919 states and 22838 transitions. [2023-12-19 06:52:13,918 INFO L78 Accepts]: Start accepts. Automaton has 13919 states and 22838 transitions. Word has length 570 [2023-12-19 06:52:13,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:52:13,919 INFO L495 AbstractCegarLoop]: Abstraction has 13919 states and 22838 transitions. [2023-12-19 06:52:13,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (141), 2 states have call predecessors, (141), 4 states have return successors, (142), 2 states have call predecessors, (142), 2 states have call successors, (142) [2023-12-19 06:52:13,919 INFO L276 IsEmpty]: Start isEmpty. Operand 13919 states and 22838 transitions. [2023-12-19 06:52:13,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2023-12-19 06:52:13,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:52:13,931 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:52:13,953 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 06:52:14,153 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 06:52:14,153 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:52:14,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:52:14,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1668015059, now seen corresponding path program 1 times [2023-12-19 06:52:14,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:52:14,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226064693] [2023-12-19 06:52:14,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:52:14,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:52:14,194 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:52:14,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [29974741] [2023-12-19 06:52:14,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:52:14,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:52:14,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:52:14,210 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 06:52:14,233 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 06:52:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:52:14,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 1237 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 06:52:14,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:52:14,543 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2023-12-19 06:52:14,543 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:52:14,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:52:14,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226064693] [2023-12-19 06:52:14,543 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:52:14,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29974741] [2023-12-19 06:52:14,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29974741] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:52:14,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:52:14,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 06:52:14,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225676089] [2023-12-19 06:52:14,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:52:14,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 06:52:14,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:52:14,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 06:52:14,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 06:52:14,548 INFO L87 Difference]: Start difference. First operand 13919 states and 22838 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-12-19 06:52:15,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:52:15,711 INFO L93 Difference]: Finished difference Result 33833 states and 55357 transitions. [2023-12-19 06:52:15,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 06:52:15,711 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 570 [2023-12-19 06:52:15,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:52:15,769 INFO L225 Difference]: With dead ends: 33833 [2023-12-19 06:52:15,769 INFO L226 Difference]: Without dead ends: 18379 [2023-12-19 06:52:15,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 568 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 06:52:15,804 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 343 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 06:52:15,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 1230 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 06:52:15,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18379 states. [2023-12-19 06:52:16,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18379 to 18367. [2023-12-19 06:52:16,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18367 states, 13482 states have (on average 1.5112001186767543) internal successors, (20374), 13622 states have internal predecessors, (20374), 4712 states have call successors, (4712), 172 states have call predecessors, (4712), 172 states have return successors, (4712), 4572 states have call predecessors, (4712), 4712 states have call successors, (4712) [2023-12-19 06:52:16,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18367 states to 18367 states and 29798 transitions. [2023-12-19 06:52:16,957 INFO L78 Accepts]: Start accepts. Automaton has 18367 states and 29798 transitions. Word has length 570 [2023-12-19 06:52:16,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:52:16,958 INFO L495 AbstractCegarLoop]: Abstraction has 18367 states and 29798 transitions. [2023-12-19 06:52:16,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-12-19 06:52:16,958 INFO L276 IsEmpty]: Start isEmpty. Operand 18367 states and 29798 transitions. [2023-12-19 06:52:16,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2023-12-19 06:52:16,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:52:16,973 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:52:17,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 06:52:17,181 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 06:52:17,181 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:52:17,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:52:17,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1533497325, now seen corresponding path program 1 times [2023-12-19 06:52:17,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:52:17,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855413765] [2023-12-19 06:52:17,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:52:17,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:52:17,227 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:52:17,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1316283964] [2023-12-19 06:52:17,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:52:17,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:52:17,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:52:17,243 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 06:52:17,264 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 06:52:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:52:17,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 1238 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 06:52:17,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:52:17,774 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 7407 proven. 87 refuted. 0 times theorem prover too weak. 9250 trivial. 0 not checked. [2023-12-19 06:52:17,775 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:52:18,115 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 186 proven. 87 refuted. 0 times theorem prover too weak. 16471 trivial. 0 not checked. [2023-12-19 06:52:18,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:52:18,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855413765] [2023-12-19 06:52:18,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:52:18,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316283964] [2023-12-19 06:52:18,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316283964] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:52:18,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:52:18,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-12-19 06:52:18,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930256122] [2023-12-19 06:52:18,116 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:52:18,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 06:52:18,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:52:18,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 06:52:18,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-12-19 06:52:18,118 INFO L87 Difference]: Start difference. First operand 18367 states and 29798 transitions. Second operand has 18 states, 18 states have (on average 9.0) internal successors, (162), 18 states have internal predecessors, (162), 3 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 3 states have call predecessors, (122), 3 states have call successors, (122) [2023-12-19 06:52:23,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 06:52:26,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:52:26,096 INFO L93 Difference]: Finished difference Result 66709 states and 107079 transitions. [2023-12-19 06:52:26,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-19 06:52:26,097 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 9.0) internal successors, (162), 18 states have internal predecessors, (162), 3 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 3 states have call predecessors, (122), 3 states have call successors, (122) Word has length 570 [2023-12-19 06:52:26,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:52:26,235 INFO L225 Difference]: With dead ends: 66709 [2023-12-19 06:52:26,235 INFO L226 Difference]: Without dead ends: 48343 [2023-12-19 06:52:26,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1165 GetRequests, 1125 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=478, Invalid=1244, Unknown=0, NotChecked=0, Total=1722 [2023-12-19 06:52:26,283 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 2096 mSDsluCounter, 1687 mSDsCounter, 0 mSdLazyCounter, 2559 mSolverCounterSat, 778 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2218 SdHoareTripleChecker+Valid, 2074 SdHoareTripleChecker+Invalid, 3338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 778 IncrementalHoareTripleChecker+Valid, 2559 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-19 06:52:26,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2218 Valid, 2074 Invalid, 3338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [778 Valid, 2559 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2023-12-19 06:52:26,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48343 states. [2023-12-19 06:52:28,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48343 to 27571. [2023-12-19 06:52:28,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27571 states, 20450 states have (on average 1.5089486552567237) internal successors, (30858), 20662 states have internal predecessors, (30858), 6876 states have call successors, (6876), 244 states have call predecessors, (6876), 244 states have return successors, (6876), 6664 states have call predecessors, (6876), 6876 states have call successors, (6876) [2023-12-19 06:52:28,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27571 states to 27571 states and 44610 transitions. [2023-12-19 06:52:28,757 INFO L78 Accepts]: Start accepts. Automaton has 27571 states and 44610 transitions. Word has length 570 [2023-12-19 06:52:28,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:52:28,757 INFO L495 AbstractCegarLoop]: Abstraction has 27571 states and 44610 transitions. [2023-12-19 06:52:28,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.0) internal successors, (162), 18 states have internal predecessors, (162), 3 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 3 states have call predecessors, (122), 3 states have call successors, (122) [2023-12-19 06:52:28,758 INFO L276 IsEmpty]: Start isEmpty. Operand 27571 states and 44610 transitions. [2023-12-19 06:52:28,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2023-12-19 06:52:28,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:52:28,776 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:52:28,784 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 06:52:28,983 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 06:52:28,984 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:52:28,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:52:28,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1917464469, now seen corresponding path program 1 times [2023-12-19 06:52:28,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:52:28,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611531492] [2023-12-19 06:52:28,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:52:28,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:52:29,022 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:52:29,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1568778866] [2023-12-19 06:52:29,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:52:29,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:52:29,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:52:29,024 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 06:52:29,051 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 06:52:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:52:29,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 1236 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 06:52:29,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:52:29,523 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2023-12-19 06:52:29,524 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:52:29,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:52:29,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611531492] [2023-12-19 06:52:29,524 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:52:29,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568778866] [2023-12-19 06:52:29,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568778866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:52:29,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:52:29,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 06:52:29,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850713830] [2023-12-19 06:52:29,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:52:29,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 06:52:29,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:52:29,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 06:52:29,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 06:52:29,526 INFO L87 Difference]: Start difference. First operand 27571 states and 44610 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-12-19 06:52:32,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:52:32,854 INFO L93 Difference]: Finished difference Result 66448 states and 106934 transitions. [2023-12-19 06:52:32,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 06:52:32,855 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 570 [2023-12-19 06:52:32,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:52:33,085 INFO L225 Difference]: With dead ends: 66448 [2023-12-19 06:52:33,086 INFO L226 Difference]: Without dead ends: 38878 [2023-12-19 06:52:33,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-12-19 06:52:33,135 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 886 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 2065 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 06:52:33,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 2065 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 06:52:33,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38878 states. [2023-12-19 06:52:36,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38878 to 38751. [2023-12-19 06:52:36,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38751 states, 28837 states have (on average 1.502132676769428) internal successors, (43317), 29130 states have internal predecessors, (43317), 9434 states have call successors, (9434), 479 states have call predecessors, (9434), 479 states have return successors, (9434), 9141 states have call predecessors, (9434), 9434 states have call successors, (9434) [2023-12-19 06:52:36,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38751 states to 38751 states and 62185 transitions. [2023-12-19 06:52:36,165 INFO L78 Accepts]: Start accepts. Automaton has 38751 states and 62185 transitions. Word has length 570 [2023-12-19 06:52:36,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:52:36,165 INFO L495 AbstractCegarLoop]: Abstraction has 38751 states and 62185 transitions. [2023-12-19 06:52:36,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-12-19 06:52:36,166 INFO L276 IsEmpty]: Start isEmpty. Operand 38751 states and 62185 transitions. [2023-12-19 06:52:36,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2023-12-19 06:52:36,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:52:36,191 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:52:36,198 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 06:52:36,398 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 06:52:36,398 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:52:36,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:52:36,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1896422569, now seen corresponding path program 1 times [2023-12-19 06:52:36,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:52:36,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338068880] [2023-12-19 06:52:36,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:52:36,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:52:36,433 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:52:36,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [753111823] [2023-12-19 06:52:36,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:52:36,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:52:36,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:52:36,449 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 06:52:36,477 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 06:52:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:52:36,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 1236 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 06:52:36,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:52:37,119 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 8382 proven. 156 refuted. 0 times theorem prover too weak. 8206 trivial. 0 not checked. [2023-12-19 06:52:37,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:52:37,352 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2023-12-19 06:52:37,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:52:37,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338068880] [2023-12-19 06:52:37,353 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:52:37,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753111823] [2023-12-19 06:52:37,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753111823] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 06:52:37,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:52:37,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2023-12-19 06:52:37,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305094796] [2023-12-19 06:52:37,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:52:37,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 06:52:37,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:52:37,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 06:52:37,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-12-19 06:52:37,355 INFO L87 Difference]: Start difference. First operand 38751 states and 62185 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-12-19 06:52:42,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:52:42,664 INFO L93 Difference]: Finished difference Result 109593 states and 175688 transitions. [2023-12-19 06:52:42,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 06:52:42,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 570 [2023-12-19 06:52:42,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:52:42,865 INFO L225 Difference]: With dead ends: 109593 [2023-12-19 06:52:42,865 INFO L226 Difference]: Without dead ends: 70903 [2023-12-19 06:52:42,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1138 GetRequests, 1126 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-12-19 06:52:42,949 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 782 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 06:52:42,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 915 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 06:52:42,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70903 states. [2023-12-19 06:52:47,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70903 to 61515. [2023-12-19 06:52:47,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61515 states, 46341 states have (on average 1.5080598174402797) internal successors, (69885), 46778 states have internal predecessors, (69885), 14406 states have call successors, (14406), 767 states have call predecessors, (14406), 767 states have return successors, (14406), 13969 states have call predecessors, (14406), 14406 states have call successors, (14406) [2023-12-19 06:52:48,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61515 states to 61515 states and 98697 transitions. [2023-12-19 06:52:48,200 INFO L78 Accepts]: Start accepts. Automaton has 61515 states and 98697 transitions. Word has length 570 [2023-12-19 06:52:48,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:52:48,201 INFO L495 AbstractCegarLoop]: Abstraction has 61515 states and 98697 transitions. [2023-12-19 06:52:48,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-12-19 06:52:48,201 INFO L276 IsEmpty]: Start isEmpty. Operand 61515 states and 98697 transitions. [2023-12-19 06:52:48,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2023-12-19 06:52:48,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:52:48,233 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:52:48,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-19 06:52:48,440 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 06:52:48,441 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:52:48,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:52:48,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1677567851, now seen corresponding path program 1 times [2023-12-19 06:52:48,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:52:48,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256377107] [2023-12-19 06:52:48,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:52:48,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:52:48,482 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:52:48,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1767866890] [2023-12-19 06:52:48,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:52:48,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:52:48,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:52:48,510 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 06:52:48,528 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 06:52:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:52:48,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 1237 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 06:52:48,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:52:49,012 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 6111 proven. 63 refuted. 0 times theorem prover too weak. 10570 trivial. 0 not checked. [2023-12-19 06:52:49,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:52:49,201 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2023-12-19 06:52:49,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:52:49,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256377107] [2023-12-19 06:52:49,202 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:52:49,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767866890] [2023-12-19 06:52:49,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767866890] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 06:52:49,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:52:49,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-19 06:52:49,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249304912] [2023-12-19 06:52:49,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:52:49,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 06:52:49,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:52:49,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 06:52:49,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-19 06:52:49,205 INFO L87 Difference]: Start difference. First operand 61515 states and 98697 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-12-19 06:52:53,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:52:53,426 INFO L93 Difference]: Finished difference Result 120169 states and 191706 transitions. [2023-12-19 06:52:53,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 06:52:53,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 570 [2023-12-19 06:52:53,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:52:53,564 INFO L225 Difference]: With dead ends: 120169 [2023-12-19 06:52:53,564 INFO L226 Difference]: Without dead ends: 58715 [2023-12-19 06:52:53,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1139 GetRequests, 1131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-19 06:52:53,653 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 1 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:52:53,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1143 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:52:53,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58715 states. [2023-12-19 06:52:58,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58715 to 58715. [2023-12-19 06:52:58,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58715 states, 43541 states have (on average 1.4635630784777567) internal successors, (63725), 43978 states have internal predecessors, (63725), 14406 states have call successors, (14406), 767 states have call predecessors, (14406), 767 states have return successors, (14406), 13969 states have call predecessors, (14406), 14406 states have call successors, (14406) [2023-12-19 06:52:58,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58715 states to 58715 states and 92537 transitions. [2023-12-19 06:52:58,512 INFO L78 Accepts]: Start accepts. Automaton has 58715 states and 92537 transitions. Word has length 570 [2023-12-19 06:52:58,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:52:58,514 INFO L495 AbstractCegarLoop]: Abstraction has 58715 states and 92537 transitions. [2023-12-19 06:52:58,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-12-19 06:52:58,514 INFO L276 IsEmpty]: Start isEmpty. Operand 58715 states and 92537 transitions. [2023-12-19 06:52:58,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2023-12-19 06:52:58,571 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:52:58,572 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:52:58,579 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 06:52:58,779 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 06:52:58,779 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:52:58,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:52:58,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1868469570, now seen corresponding path program 1 times [2023-12-19 06:52:58,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:52:58,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383806718] [2023-12-19 06:52:58,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:52:58,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:52:58,822 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:52:58,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [292428187] [2023-12-19 06:52:58,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:52:58,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:52:58,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:52:58,823 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 06:52:58,834 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 06:52:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:52:59,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 1244 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-19 06:52:59,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:53:00,691 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 9860 proven. 201 refuted. 0 times theorem prover too weak. 6683 trivial. 0 not checked. [2023-12-19 06:53:00,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:53:01,985 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 339 proven. 204 refuted. 0 times theorem prover too weak. 16201 trivial. 0 not checked. [2023-12-19 06:53:01,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:53:01,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383806718] [2023-12-19 06:53:01,986 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:53:01,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292428187] [2023-12-19 06:53:01,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292428187] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:53:01,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:53:01,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35 [2023-12-19 06:53:01,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170302451] [2023-12-19 06:53:01,986 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:53:01,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-19 06:53:01,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:53:01,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-19 06:53:01,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 06:53:01,989 INFO L87 Difference]: Start difference. First operand 58715 states and 92537 transitions. Second operand has 35 states, 35 states have (on average 5.428571428571429) internal successors, (190), 35 states have internal predecessors, (190), 6 states have call successors, (134), 4 states have call predecessors, (134), 8 states have return successors, (134), 6 states have call predecessors, (134), 6 states have call successors, (134) [2023-12-19 06:54:37,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:54:37,155 INFO L93 Difference]: Finished difference Result 636983 states and 989873 transitions. [2023-12-19 06:54:37,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 288 states. [2023-12-19 06:54:37,155 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.428571428571429) internal successors, (190), 35 states have internal predecessors, (190), 6 states have call successors, (134), 4 states have call predecessors, (134), 8 states have return successors, (134), 6 states have call predecessors, (134), 6 states have call successors, (134) Word has length 572 [2023-12-19 06:54:37,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:54:39,594 INFO L225 Difference]: With dead ends: 636983 [2023-12-19 06:54:39,595 INFO L226 Difference]: Without dead ends: 578329 [2023-12-19 06:54:39,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1476 GetRequests, 1163 SyntacticMatches, 0 SemanticMatches, 313 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38497 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=17868, Invalid=81042, Unknown=0, NotChecked=0, Total=98910 [2023-12-19 06:54:39,933 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 10634 mSDsluCounter, 11244 mSDsCounter, 0 mSdLazyCounter, 13225 mSolverCounterSat, 4245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10746 SdHoareTripleChecker+Valid, 12087 SdHoareTripleChecker+Invalid, 17470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4245 IncrementalHoareTripleChecker+Valid, 13225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:54:39,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10746 Valid, 12087 Invalid, 17470 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4245 Valid, 13225 Invalid, 0 Unknown, 0 Unchecked, 16.0s Time] [2023-12-19 06:54:40,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578329 states.