/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_operatoramount_amount500_file-87.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:23:12,526 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:23:12,566 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:23:12,569 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:23:12,569 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:23:12,583 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:23:12,583 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:23:12,584 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:23:12,584 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:23:12,584 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:23:12,585 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:23:12,585 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:23:12,585 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:23:12,586 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:23:12,586 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:23:12,586 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:23:12,586 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:23:12,587 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:23:12,587 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:23:12,587 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:23:12,587 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:23:12,588 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:23:12,588 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:23:12,588 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:23:12,589 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:23:12,589 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:23:12,589 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:23:12,589 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:23:12,590 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:23:12,590 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:23:12,590 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:23:12,591 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:23:12,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:23:12,591 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:23:12,591 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:23:12,592 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:23:12,592 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:23:12,592 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:23:12,592 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:23:12,593 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:23:12,593 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:23:12,593 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:23:12,593 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:23:12,594 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:23:12,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:23:12,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:23:12,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:23:12,778 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:23:12,780 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:23:12,781 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-87.i [2023-12-15 21:23:13,816 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:23:14,000 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:23:14,000 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-87.i [2023-12-15 21:23:14,009 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9bd9c3fb/9d8c588b27f64360999e6c11447f8177/FLAG86c936e29 [2023-12-15 21:23:14,019 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9bd9c3fb/9d8c588b27f64360999e6c11447f8177 [2023-12-15 21:23:14,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:23:14,022 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:23:14,023 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:23:14,023 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:23:14,026 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:23:14,026 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:23:14" (1/1) ... [2023-12-15 21:23:14,027 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e0dc950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:23:14, skipping insertion in model container [2023-12-15 21:23:14,027 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:23:14" (1/1) ... [2023-12-15 21:23:14,071 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:23:14,195 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_operatoramount_amount500_file-87.i[916,929] [2023-12-15 21:23:14,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:23:14,356 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:23:14,363 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_operatoramount_amount500_file-87.i[916,929] [2023-12-15 21:23:14,459 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:23:14,474 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:23:14,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:23:14 WrapperNode [2023-12-15 21:23:14,474 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:23:14,475 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:23:14,475 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:23:14,475 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:23:14,479 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:23:14" (1/1) ... [2023-12-15 21:23:14,507 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:23:14" (1/1) ... [2023-12-15 21:23:14,627 INFO L138 Inliner]: procedures = 26, calls = 81, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 721 [2023-12-15 21:23:14,629 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:23:14,629 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:23:14,629 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:23:14,629 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:23:14,637 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:23:14" (1/1) ... [2023-12-15 21:23:14,637 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:23:14" (1/1) ... [2023-12-15 21:23:14,682 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:23:14" (1/1) ... [2023-12-15 21:23:14,737 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]. [2023-12-15 21:23:14,738 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:23:14" (1/1) ... [2023-12-15 21:23:14,738 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:23:14" (1/1) ... [2023-12-15 21:23:14,766 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:23:14" (1/1) ... [2023-12-15 21:23:14,778 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:23:14" (1/1) ... [2023-12-15 21:23:14,790 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:23:14" (1/1) ... [2023-12-15 21:23:14,798 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:23:14" (1/1) ... [2023-12-15 21:23:14,820 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:23:14,821 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:23:14,821 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:23:14,821 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:23:14,822 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:23:14" (1/1) ... [2023-12-15 21:23:14,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:23:14,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:23:14,844 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) [2023-12-15 21:23:14,886 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 [2023-12-15 21:23:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:23:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:23:14,895 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:23:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:23:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:23:14,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:23:15,029 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:23:15,030 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:23:15,877 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:23:15,928 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:23:15,929 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:23:15,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:23:15 BoogieIcfgContainer [2023-12-15 21:23:15,929 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:23:15,931 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:23:15,931 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:23:15,933 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:23:15,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:23:14" (1/3) ... [2023-12-15 21:23:15,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4baf69d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:23:15, skipping insertion in model container [2023-12-15 21:23:15,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:23:14" (2/3) ... [2023-12-15 21:23:15,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4baf69d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:23:15, skipping insertion in model container [2023-12-15 21:23:15,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:23:15" (3/3) ... [2023-12-15 21:23:15,937 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-87.i [2023-12-15 21:23:15,951 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:23:15,951 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:23:16,006 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:23:16,011 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;@2fa3d572, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:23:16,012 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:23:16,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 267 states, 196 states have (on average 1.586734693877551) internal successors, (311), 197 states have internal predecessors, (311), 68 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-15 21:23:16,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2023-12-15 21:23:16,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:23:16,050 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:23:16,050 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:23:16,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:23:16,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1388841345, now seen corresponding path program 1 times [2023-12-15 21:23:16,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:23:16,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322987718] [2023-12-15 21:23:16,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:16,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:23:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:23:16,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:23:16,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322987718] [2023-12-15 21:23:16,372 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 21:23:16,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386277411] [2023-12-15 21:23:16,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:16,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:23:16,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:23:16,376 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) [2023-12-15 21:23:16,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 21:23:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:23:16,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 1170 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 21:23:16,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:23:16,860 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 8978 trivial. 0 not checked. [2023-12-15 21:23:16,861 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:23:16,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386277411] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:23:16,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:23:16,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:23:16,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067071661] [2023-12-15 21:23:16,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:23:16,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:23:16,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:23:16,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:23:16,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:23:16,901 INFO L87 Difference]: Start difference. First operand has 267 states, 196 states have (on average 1.586734693877551) internal successors, (311), 197 states have internal predecessors, (311), 68 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) Second operand has 2 states, 2 states have (on average 62.5) internal successors, (125), 2 states have internal predecessors, (125), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 2 states have call successors, (68) [2023-12-15 21:23:16,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:23:16,964 INFO L93 Difference]: Finished difference Result 531 states and 960 transitions. [2023-12-15 21:23:16,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:23:16,968 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 62.5) internal successors, (125), 2 states have internal predecessors, (125), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 2 states have call successors, (68) Word has length 460 [2023-12-15 21:23:16,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:23:16,979 INFO L225 Difference]: With dead ends: 531 [2023-12-15 21:23:16,979 INFO L226 Difference]: Without dead ends: 265 [2023-12-15 21:23:16,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:23:16,986 INFO L413 NwaCegarLoop]: 434 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, 434 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 [2023-12-15 21:23:16,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 434 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:23:16,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-12-15 21:23:17,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2023-12-15 21:23:17,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 195 states have (on average 1.5435897435897437) internal successors, (301), 195 states have internal predecessors, (301), 68 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-15 21:23:17,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 437 transitions. [2023-12-15 21:23:17,058 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 437 transitions. Word has length 460 [2023-12-15 21:23:17,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:23:17,058 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 437 transitions. [2023-12-15 21:23:17,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 62.5) internal successors, (125), 2 states have internal predecessors, (125), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 2 states have call successors, (68) [2023-12-15 21:23:17,059 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 437 transitions. [2023-12-15 21:23:17,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2023-12-15 21:23:17,069 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:23:17,069 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:23:17,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 21:23:17,277 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 [2023-12-15 21:23:17,278 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:23:17,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:23:17,278 INFO L85 PathProgramCache]: Analyzing trace with hash 66301689, now seen corresponding path program 1 times [2023-12-15 21:23:17,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:23:17,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126725737] [2023-12-15 21:23:17,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:17,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:23:17,387 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:23:17,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [897685701] [2023-12-15 21:23:17,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:17,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:23:17,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:23:17,397 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) [2023-12-15 21:23:17,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 21:23:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:23:17,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 1170 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:23:17,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:23:18,121 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2023-12-15 21:23:18,122 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:23:18,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:23:18,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126725737] [2023-12-15 21:23:18,123 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:23:18,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897685701] [2023-12-15 21:23:18,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897685701] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:23:18,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:23:18,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:23:18,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631168985] [2023-12-15 21:23:18,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:23:18,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:23:18,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:23:18,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:23:18,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:23:18,128 INFO L87 Difference]: Start difference. First operand 265 states and 437 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-15 21:23:18,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:23:18,476 INFO L93 Difference]: Finished difference Result 862 states and 1422 transitions. [2023-12-15 21:23:18,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:23:18,476 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 460 [2023-12-15 21:23:18,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:23:18,481 INFO L225 Difference]: With dead ends: 862 [2023-12-15 21:23:18,481 INFO L226 Difference]: Without dead ends: 598 [2023-12-15 21:23:18,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:23:18,483 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 919 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:23:18,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 1672 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:23:18,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2023-12-15 21:23:18,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 526. [2023-12-15 21:23:18,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 387 states have (on average 1.545219638242894) internal successors, (598), 387 states have internal predecessors, (598), 136 states have call successors, (136), 2 states have call predecessors, (136), 2 states have return successors, (136), 136 states have call predecessors, (136), 136 states have call successors, (136) [2023-12-15 21:23:18,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 870 transitions. [2023-12-15 21:23:18,529 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 870 transitions. Word has length 460 [2023-12-15 21:23:18,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:23:18,530 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 870 transitions. [2023-12-15 21:23:18,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-15 21:23:18,530 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 870 transitions. [2023-12-15 21:23:18,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2023-12-15 21:23:18,536 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:23:18,536 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:23:18,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 21:23:18,745 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 [2023-12-15 21:23:18,745 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:23:18,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:23:18,746 INFO L85 PathProgramCache]: Analyzing trace with hash 93367291, now seen corresponding path program 1 times [2023-12-15 21:23:18,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:23:18,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178953876] [2023-12-15 21:23:18,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:18,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:23:18,799 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:23:18,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [438746448] [2023-12-15 21:23:18,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:18,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:23:18,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:23:18,800 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) [2023-12-15 21:23:18,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 21:23:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:23:19,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 1170 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:23:19,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:23:19,441 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2023-12-15 21:23:19,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:23:19,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:23:19,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178953876] [2023-12-15 21:23:19,448 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:23:19,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438746448] [2023-12-15 21:23:19,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438746448] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:23:19,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:23:19,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:23:19,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747561137] [2023-12-15 21:23:19,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:23:19,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:23:19,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:23:19,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:23:19,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:23:19,453 INFO L87 Difference]: Start difference. First operand 526 states and 870 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-15 21:23:19,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:23:19,767 INFO L93 Difference]: Finished difference Result 1700 states and 2811 transitions. [2023-12-15 21:23:19,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:23:19,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 460 [2023-12-15 21:23:19,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:23:19,773 INFO L225 Difference]: With dead ends: 1700 [2023-12-15 21:23:19,774 INFO L226 Difference]: Without dead ends: 1175 [2023-12-15 21:23:19,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:23:19,776 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 867 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:23:19,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 1401 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:23:19,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2023-12-15 21:23:19,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1049. [2023-12-15 21:23:19,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1049 states, 772 states have (on average 1.544041450777202) internal successors, (1192), 772 states have internal predecessors, (1192), 272 states have call successors, (272), 4 states have call predecessors, (272), 4 states have return successors, (272), 272 states have call predecessors, (272), 272 states have call successors, (272) [2023-12-15 21:23:19,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1736 transitions. [2023-12-15 21:23:19,843 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1736 transitions. Word has length 460 [2023-12-15 21:23:19,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:23:19,844 INFO L495 AbstractCegarLoop]: Abstraction has 1049 states and 1736 transitions. [2023-12-15 21:23:19,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-15 21:23:19,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1736 transitions. [2023-12-15 21:23:19,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2023-12-15 21:23:19,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:23:19,849 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:23:19,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 21:23:20,056 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 [2023-12-15 21:23:20,056 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:23:20,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:23:20,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1740720760, now seen corresponding path program 1 times [2023-12-15 21:23:20,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:23:20,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295943744] [2023-12-15 21:23:20,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:20,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:23:20,104 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:23:20,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2096965950] [2023-12-15 21:23:20,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:20,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:23:20,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:23:20,105 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) [2023-12-15 21:23:20,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 21:23:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:23:20,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:23:20,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:23:20,457 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2023-12-15 21:23:20,457 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:23:20,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:23:20,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295943744] [2023-12-15 21:23:20,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:23:20,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096965950] [2023-12-15 21:23:20,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096965950] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:23:20,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:23:20,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:23:20,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014573719] [2023-12-15 21:23:20,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:23:20,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:23:20,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:23:20,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:23:20,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:23:20,461 INFO L87 Difference]: Start difference. First operand 1049 states and 1736 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-15 21:23:20,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:23:20,575 INFO L93 Difference]: Finished difference Result 3145 states and 5206 transitions. [2023-12-15 21:23:20,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:23:20,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 461 [2023-12-15 21:23:20,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:23:20,584 INFO L225 Difference]: With dead ends: 3145 [2023-12-15 21:23:20,584 INFO L226 Difference]: Without dead ends: 2097 [2023-12-15 21:23:20,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:23:20,588 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 409 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:23:20,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 1791 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:23:20,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2097 states. [2023-12-15 21:23:20,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2097 to 1519. [2023-12-15 21:23:20,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1242 states have (on average 1.607085346215781) internal successors, (1996), 1242 states have internal predecessors, (1996), 272 states have call successors, (272), 4 states have call predecessors, (272), 4 states have return successors, (272), 272 states have call predecessors, (272), 272 states have call successors, (272) [2023-12-15 21:23:20,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 2540 transitions. [2023-12-15 21:23:20,705 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 2540 transitions. Word has length 461 [2023-12-15 21:23:20,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:23:20,706 INFO L495 AbstractCegarLoop]: Abstraction has 1519 states and 2540 transitions. [2023-12-15 21:23:20,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-15 21:23:20,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 2540 transitions. [2023-12-15 21:23:20,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2023-12-15 21:23:20,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:23:20,709 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:23:20,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 21:23:20,916 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 [2023-12-15 21:23:20,916 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:23:20,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:23:20,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1817621558, now seen corresponding path program 1 times [2023-12-15 21:23:20,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:23:20,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066508689] [2023-12-15 21:23:20,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:20,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:23:20,957 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:23:20,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1269671950] [2023-12-15 21:23:20,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:20,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:23:20,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:23:20,959 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) [2023-12-15 21:23:20,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 21:23:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:23:21,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 1170 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:23:21,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:23:21,252 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2023-12-15 21:23:21,252 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:23:21,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:23:21,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066508689] [2023-12-15 21:23:21,252 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:23:21,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269671950] [2023-12-15 21:23:21,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269671950] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:23:21,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:23:21,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:23:21,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41978131] [2023-12-15 21:23:21,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:23:21,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:23:21,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:23:21,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:23:21,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:23:21,254 INFO L87 Difference]: Start difference. First operand 1519 states and 2540 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-15 21:23:21,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:23:21,368 INFO L93 Difference]: Finished difference Result 4515 states and 7538 transitions. [2023-12-15 21:23:21,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:23:21,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 461 [2023-12-15 21:23:21,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:23:21,379 INFO L225 Difference]: With dead ends: 4515 [2023-12-15 21:23:21,379 INFO L226 Difference]: Without dead ends: 2997 [2023-12-15 21:23:21,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:23:21,384 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 408 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:23:21,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 1230 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:23:21,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2997 states. [2023-12-15 21:23:21,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2997 to 2959. [2023-12-15 21:23:21,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2959 states, 2406 states have (on average 1.5852036575228594) internal successors, (3814), 2406 states have internal predecessors, (3814), 544 states have call successors, (544), 8 states have call predecessors, (544), 8 states have return successors, (544), 544 states have call predecessors, (544), 544 states have call successors, (544) [2023-12-15 21:23:21,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2959 states to 2959 states and 4902 transitions. [2023-12-15 21:23:21,539 INFO L78 Accepts]: Start accepts. Automaton has 2959 states and 4902 transitions. Word has length 461 [2023-12-15 21:23:21,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:23:21,540 INFO L495 AbstractCegarLoop]: Abstraction has 2959 states and 4902 transitions. [2023-12-15 21:23:21,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-15 21:23:21,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2959 states and 4902 transitions. [2023-12-15 21:23:21,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2023-12-15 21:23:21,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:23:21,544 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:23:21,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 21:23:21,751 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 [2023-12-15 21:23:21,752 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:23:21,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:23:21,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1261192012, now seen corresponding path program 1 times [2023-12-15 21:23:21,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:23:21,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781363192] [2023-12-15 21:23:21,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:21,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:23:21,796 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:23:21,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [658804010] [2023-12-15 21:23:21,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:21,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:23:21,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:23:21,798 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) [2023-12-15 21:23:21,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 21:23:22,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:23:22,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 1169 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:23:22,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:23:22,119 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2023-12-15 21:23:22,120 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:23:22,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:23:22,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781363192] [2023-12-15 21:23:22,120 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:23:22,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658804010] [2023-12-15 21:23:22,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658804010] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:23:22,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:23:22,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:23:22,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710895337] [2023-12-15 21:23:22,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:23:22,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:23:22,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:23:22,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:23:22,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:23:22,122 INFO L87 Difference]: Start difference. First operand 2959 states and 4902 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-15 21:23:22,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:23:22,340 INFO L93 Difference]: Finished difference Result 8747 states and 14496 transitions. [2023-12-15 21:23:22,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:23:22,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 461 [2023-12-15 21:23:22,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:23:22,362 INFO L225 Difference]: With dead ends: 8747 [2023-12-15 21:23:22,362 INFO L226 Difference]: Without dead ends: 5789 [2023-12-15 21:23:22,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:23:22,371 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 387 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:23:22,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 1096 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:23:22,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5789 states. [2023-12-15 21:23:22,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5789 to 4003. [2023-12-15 21:23:22,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4003 states, 3450 states have (on average 1.6179710144927537) internal successors, (5582), 3450 states have internal predecessors, (5582), 544 states have call successors, (544), 8 states have call predecessors, (544), 8 states have return successors, (544), 544 states have call predecessors, (544), 544 states have call successors, (544) [2023-12-15 21:23:22,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4003 states to 4003 states and 6670 transitions. [2023-12-15 21:23:22,685 INFO L78 Accepts]: Start accepts. Automaton has 4003 states and 6670 transitions. Word has length 461 [2023-12-15 21:23:22,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:23:22,686 INFO L495 AbstractCegarLoop]: Abstraction has 4003 states and 6670 transitions. [2023-12-15 21:23:22,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-15 21:23:22,686 INFO L276 IsEmpty]: Start isEmpty. Operand 4003 states and 6670 transitions. [2023-12-15 21:23:22,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2023-12-15 21:23:22,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:23:22,690 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:23:22,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 21:23:22,897 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 [2023-12-15 21:23:22,898 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:23:22,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:23:22,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1719212980, now seen corresponding path program 1 times [2023-12-15 21:23:22,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:23:22,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904475208] [2023-12-15 21:23:22,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:22,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:23:22,971 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:23:22,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1803699744] [2023-12-15 21:23:22,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:22,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:23:22,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:23:22,973 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) [2023-12-15 21:23:22,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 21:23:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:23:23,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 1168 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 21:23:23,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:23:24,225 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2023-12-15 21:23:24,226 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:23:24,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:23:24,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904475208] [2023-12-15 21:23:24,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:23:24,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803699744] [2023-12-15 21:23:24,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803699744] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:23:24,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:23:24,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:23:24,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733437540] [2023-12-15 21:23:24,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:23:24,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:23:24,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:23:24,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:23:24,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:23:24,229 INFO L87 Difference]: Start difference. First operand 4003 states and 6670 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-15 21:23:24,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:23:24,552 INFO L93 Difference]: Finished difference Result 10691 states and 17889 transitions. [2023-12-15 21:23:24,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:23:24,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 461 [2023-12-15 21:23:24,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:23:24,574 INFO L225 Difference]: With dead ends: 10691 [2023-12-15 21:23:24,574 INFO L226 Difference]: Without dead ends: 6689 [2023-12-15 21:23:24,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 457 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:23:24,584 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 496 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:23:24,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 1682 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:23:24,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6689 states. [2023-12-15 21:23:24,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6689 to 4335. [2023-12-15 21:23:24,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4335 states, 3713 states have (on average 1.6094802046862375) internal successors, (5976), 3713 states have internal predecessors, (5976), 612 states have call successors, (612), 9 states have call predecessors, (612), 9 states have return successors, (612), 612 states have call predecessors, (612), 612 states have call successors, (612) [2023-12-15 21:23:24,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4335 states to 4335 states and 7200 transitions. [2023-12-15 21:23:24,815 INFO L78 Accepts]: Start accepts. Automaton has 4335 states and 7200 transitions. Word has length 461 [2023-12-15 21:23:24,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:23:24,816 INFO L495 AbstractCegarLoop]: Abstraction has 4335 states and 7200 transitions. [2023-12-15 21:23:24,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-15 21:23:24,816 INFO L276 IsEmpty]: Start isEmpty. Operand 4335 states and 7200 transitions. [2023-12-15 21:23:24,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2023-12-15 21:23:24,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:23:24,821 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:23:24,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 21:23:25,036 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 [2023-12-15 21:23:25,039 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:23:25,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:23:25,039 INFO L85 PathProgramCache]: Analyzing trace with hash 889574478, now seen corresponding path program 1 times [2023-12-15 21:23:25,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:23:25,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879235506] [2023-12-15 21:23:25,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:25,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:23:25,095 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:23:25,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1732112499] [2023-12-15 21:23:25,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:25,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:23:25,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:23:25,096 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) [2023-12-15 21:23:25,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 21:23:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:23:25,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 1167 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 21:23:25,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:23:26,100 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2023-12-15 21:23:26,100 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:23:26,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:23:26,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879235506] [2023-12-15 21:23:26,100 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:23:26,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732112499] [2023-12-15 21:23:26,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732112499] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:23:26,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:23:26,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:23:26,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356585854] [2023-12-15 21:23:26,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:23:26,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:23:26,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:23:26,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:23:26,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:23:26,112 INFO L87 Difference]: Start difference. First operand 4335 states and 7200 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-15 21:23:26,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:23:26,465 INFO L93 Difference]: Finished difference Result 9212 states and 15342 transitions. [2023-12-15 21:23:26,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:23:26,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 461 [2023-12-15 21:23:26,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:23:26,493 INFO L225 Difference]: With dead ends: 9212 [2023-12-15 21:23:26,494 INFO L226 Difference]: Without dead ends: 5000 [2023-12-15 21:23:26,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:23:26,503 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 331 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:23:26,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 1250 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:23:26,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5000 states. [2023-12-15 21:23:26,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5000 to 4334. [2023-12-15 21:23:26,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4334 states, 3712 states have (on average 1.6088362068965518) internal successors, (5972), 3712 states have internal predecessors, (5972), 612 states have call successors, (612), 9 states have call predecessors, (612), 9 states have return successors, (612), 612 states have call predecessors, (612), 612 states have call successors, (612) [2023-12-15 21:23:26,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4334 states to 4334 states and 7196 transitions. [2023-12-15 21:23:26,692 INFO L78 Accepts]: Start accepts. Automaton has 4334 states and 7196 transitions. Word has length 461 [2023-12-15 21:23:26,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:23:26,692 INFO L495 AbstractCegarLoop]: Abstraction has 4334 states and 7196 transitions. [2023-12-15 21:23:26,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-15 21:23:26,693 INFO L276 IsEmpty]: Start isEmpty. Operand 4334 states and 7196 transitions. [2023-12-15 21:23:26,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2023-12-15 21:23:26,697 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:23:26,697 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:23:26,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 21:23:26,905 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 [2023-12-15 21:23:26,905 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:23:26,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:23:26,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1366911347, now seen corresponding path program 1 times [2023-12-15 21:23:26,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:23:26,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296504821] [2023-12-15 21:23:26,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:26,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:23:26,948 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:23:26,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1895481948] [2023-12-15 21:23:26,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:26,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:23:26,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:23:26,950 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) [2023-12-15 21:23:26,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 21:23:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:23:27,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 1170 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:23:27,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:23:27,607 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 3363 proven. 153 refuted. 0 times theorem prover too weak. 5596 trivial. 0 not checked. [2023-12-15 21:23:27,607 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:23:27,927 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 48 proven. 153 refuted. 0 times theorem prover too weak. 8911 trivial. 0 not checked. [2023-12-15 21:23:27,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:23:27,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296504821] [2023-12-15 21:23:27,928 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:23:27,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895481948] [2023-12-15 21:23:27,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895481948] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:23:27,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:23:27,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:23:27,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325835607] [2023-12-15 21:23:27,928 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:23:27,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:23:27,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:23:27,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:23:27,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:23:27,930 INFO L87 Difference]: Start difference. First operand 4334 states and 7196 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 2 states have call successors, (119), 2 states have call predecessors, (119), 4 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) [2023-12-15 21:23:28,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:23:28,417 INFO L93 Difference]: Finished difference Result 8534 states and 14136 transitions. [2023-12-15 21:23:28,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:23:28,418 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 2 states have call successors, (119), 2 states have call predecessors, (119), 4 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) Word has length 463 [2023-12-15 21:23:28,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:23:28,431 INFO L225 Difference]: With dead ends: 8534 [2023-12-15 21:23:28,431 INFO L226 Difference]: Without dead ends: 4390 [2023-12-15 21:23:28,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 928 GetRequests, 918 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:23:28,440 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 480 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:23:28,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 960 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:23:28,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4390 states. [2023-12-15 21:23:28,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4390 to 4370. [2023-12-15 21:23:28,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4370 states, 3739 states have (on average 1.599625568333779) internal successors, (5981), 3739 states have internal predecessors, (5981), 612 states have call successors, (612), 18 states have call predecessors, (612), 18 states have return successors, (612), 612 states have call predecessors, (612), 612 states have call successors, (612) [2023-12-15 21:23:28,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4370 states to 4370 states and 7205 transitions. [2023-12-15 21:23:28,619 INFO L78 Accepts]: Start accepts. Automaton has 4370 states and 7205 transitions. Word has length 463 [2023-12-15 21:23:28,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:23:28,619 INFO L495 AbstractCegarLoop]: Abstraction has 4370 states and 7205 transitions. [2023-12-15 21:23:28,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 2 states have call successors, (119), 2 states have call predecessors, (119), 4 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) [2023-12-15 21:23:28,620 INFO L276 IsEmpty]: Start isEmpty. Operand 4370 states and 7205 transitions. [2023-12-15 21:23:28,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2023-12-15 21:23:28,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:23:28,627 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:23:28,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-15 21:23:28,834 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 [2023-12-15 21:23:28,835 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:23:28,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:23:28,836 INFO L85 PathProgramCache]: Analyzing trace with hash 798986311, now seen corresponding path program 1 times [2023-12-15 21:23:28,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:23:28,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842212537] [2023-12-15 21:23:28,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:28,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:23:28,897 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:23:28,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2135303212] [2023-12-15 21:23:28,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:28,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:23:28,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:23:28,899 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) [2023-12-15 21:23:28,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 21:23:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:23:29,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 1169 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:23:29,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:23:29,609 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2023-12-15 21:23:29,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:23:29,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:23:29,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842212537] [2023-12-15 21:23:29,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:23:29,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135303212] [2023-12-15 21:23:29,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135303212] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:23:29,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:23:29,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:23:29,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044553398] [2023-12-15 21:23:29,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:23:29,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:23:29,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:23:29,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:23:29,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:23:29,612 INFO L87 Difference]: Start difference. First operand 4370 states and 7205 transitions. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 5 states have internal predecessors, (127), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-15 21:23:30,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:23:30,249 INFO L93 Difference]: Finished difference Result 16928 states and 28031 transitions. [2023-12-15 21:23:30,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:23:30,250 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 5 states have internal predecessors, (127), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 464 [2023-12-15 21:23:30,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:23:30,277 INFO L225 Difference]: With dead ends: 16928 [2023-12-15 21:23:30,277 INFO L226 Difference]: Without dead ends: 12720 [2023-12-15 21:23:30,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:23:30,326 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 1623 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 2283 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:23:30,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1623 Valid, 2283 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:23:30,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12720 states. [2023-12-15 21:23:30,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12720 to 11192. [2023-12-15 21:23:30,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11192 states, 10148 states have (on average 1.6098738667717778) internal successors, (16337), 10158 states have internal predecessors, (16337), 1004 states have call successors, (1004), 39 states have call predecessors, (1004), 39 states have return successors, (1004), 994 states have call predecessors, (1004), 1004 states have call successors, (1004) [2023-12-15 21:23:30,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11192 states to 11192 states and 18345 transitions. [2023-12-15 21:23:30,845 INFO L78 Accepts]: Start accepts. Automaton has 11192 states and 18345 transitions. Word has length 464 [2023-12-15 21:23:30,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:23:30,846 INFO L495 AbstractCegarLoop]: Abstraction has 11192 states and 18345 transitions. [2023-12-15 21:23:30,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 5 states have internal predecessors, (127), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-15 21:23:30,846 INFO L276 IsEmpty]: Start isEmpty. Operand 11192 states and 18345 transitions. [2023-12-15 21:23:30,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2023-12-15 21:23:30,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:23:30,855 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:23:30,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 21:23:31,064 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 [2023-12-15 21:23:31,065 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:23:31,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:23:31,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1098701891, now seen corresponding path program 1 times [2023-12-15 21:23:31,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:23:31,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231382981] [2023-12-15 21:23:31,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:31,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:23:31,119 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:23:31,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1310628014] [2023-12-15 21:23:31,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:31,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:23:31,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:23:31,125 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) [2023-12-15 21:23:31,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 21:23:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:23:31,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 1167 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 21:23:31,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:23:31,744 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 4243 proven. 129 refuted. 0 times theorem prover too weak. 4740 trivial. 0 not checked. [2023-12-15 21:23:31,744 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:23:32,079 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 72 proven. 129 refuted. 0 times theorem prover too weak. 8911 trivial. 0 not checked. [2023-12-15 21:23:32,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:23:32,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231382981] [2023-12-15 21:23:32,080 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:23:32,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310628014] [2023-12-15 21:23:32,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310628014] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:23:32,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:23:32,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2023-12-15 21:23:32,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577513453] [2023-12-15 21:23:32,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:23:32,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 21:23:32,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:23:32,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 21:23:32,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:23:32,082 INFO L87 Difference]: Start difference. First operand 11192 states and 18345 transitions. Second operand has 11 states, 11 states have (on average 20.727272727272727) internal successors, (228), 11 states have internal predecessors, (228), 3 states have call successors, (111), 2 states have call predecessors, (111), 4 states have return successors, (112), 3 states have call predecessors, (112), 3 states have call successors, (112) [2023-12-15 21:23:32,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:23:32,871 INFO L93 Difference]: Finished difference Result 22316 states and 36517 transitions. [2023-12-15 21:23:32,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:23:32,872 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 20.727272727272727) internal successors, (228), 11 states have internal predecessors, (228), 3 states have call successors, (111), 2 states have call predecessors, (111), 4 states have return successors, (112), 3 states have call predecessors, (112), 3 states have call successors, (112) Word has length 464 [2023-12-15 21:23:32,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:23:32,901 INFO L225 Difference]: With dead ends: 22316 [2023-12-15 21:23:32,902 INFO L226 Difference]: Without dead ends: 11298 [2023-12-15 21:23:32,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 930 GetRequests, 917 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-12-15 21:23:32,918 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 441 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 21:23:32,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 1563 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 21:23:32,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11298 states. [2023-12-15 21:23:33,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11298 to 11244. [2023-12-15 21:23:33,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11244 states, 10187 states have (on average 1.5963482870324923) internal successors, (16262), 10197 states have internal predecessors, (16262), 1004 states have call successors, (1004), 52 states have call predecessors, (1004), 52 states have return successors, (1004), 994 states have call predecessors, (1004), 1004 states have call successors, (1004) [2023-12-15 21:23:33,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11244 states to 11244 states and 18270 transitions. [2023-12-15 21:23:33,352 INFO L78 Accepts]: Start accepts. Automaton has 11244 states and 18270 transitions. Word has length 464 [2023-12-15 21:23:33,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:23:33,353 INFO L495 AbstractCegarLoop]: Abstraction has 11244 states and 18270 transitions. [2023-12-15 21:23:33,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.727272727272727) internal successors, (228), 11 states have internal predecessors, (228), 3 states have call successors, (111), 2 states have call predecessors, (111), 4 states have return successors, (112), 3 states have call predecessors, (112), 3 states have call successors, (112) [2023-12-15 21:23:33,353 INFO L276 IsEmpty]: Start isEmpty. Operand 11244 states and 18270 transitions. [2023-12-15 21:23:33,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2023-12-15 21:23:33,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:23:33,361 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:23:33,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 21:23:33,571 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 [2023-12-15 21:23:33,572 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:23:33,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:23:33,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1193174278, now seen corresponding path program 1 times [2023-12-15 21:23:33,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:23:33,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575528826] [2023-12-15 21:23:33,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:33,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:23:33,611 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:23:33,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1185789850] [2023-12-15 21:23:33,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:33,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:23:33,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:23:33,613 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) [2023-12-15 21:23:33,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 21:23:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:23:33,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 1168 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 21:23:33,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:23:34,180 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 4603 proven. 93 refuted. 0 times theorem prover too weak. 4416 trivial. 0 not checked. [2023-12-15 21:23:34,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:23:34,418 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 108 proven. 93 refuted. 0 times theorem prover too weak. 8911 trivial. 0 not checked. [2023-12-15 21:23:34,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:23:34,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575528826] [2023-12-15 21:23:34,418 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:23:34,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185789850] [2023-12-15 21:23:34,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185789850] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:23:34,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:23:34,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-15 21:23:34,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90783495] [2023-12-15 21:23:34,419 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:23:34,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 21:23:34,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:23:34,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 21:23:34,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:23:34,420 INFO L87 Difference]: Start difference. First operand 11244 states and 18270 transitions. Second operand has 10 states, 10 states have (on average 16.4) internal successors, (164), 10 states have internal predecessors, (164), 3 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 3 states have call predecessors, (100), 3 states have call successors, (100) [2023-12-15 21:23:34,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:23:34,932 INFO L93 Difference]: Finished difference Result 22436 states and 36384 transitions. [2023-12-15 21:23:34,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:23:34,933 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.4) internal successors, (164), 10 states have internal predecessors, (164), 3 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 3 states have call predecessors, (100), 3 states have call successors, (100) Word has length 465 [2023-12-15 21:23:34,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:23:34,956 INFO L225 Difference]: With dead ends: 22436 [2023-12-15 21:23:34,956 INFO L226 Difference]: Without dead ends: 11330 [2023-12-15 21:23:34,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 933 GetRequests, 920 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-12-15 21:23:34,972 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 678 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:23:34,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 1071 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:23:34,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11330 states. [2023-12-15 21:23:35,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11330 to 11276. [2023-12-15 21:23:35,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11276 states, 10206 states have (on average 1.5913188320595728) internal successors, (16241), 10216 states have internal predecessors, (16241), 1004 states have call successors, (1004), 65 states have call predecessors, (1004), 65 states have return successors, (1004), 994 states have call predecessors, (1004), 1004 states have call successors, (1004) [2023-12-15 21:23:35,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11276 states to 11276 states and 18249 transitions. [2023-12-15 21:23:35,413 INFO L78 Accepts]: Start accepts. Automaton has 11276 states and 18249 transitions. Word has length 465 [2023-12-15 21:23:35,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:23:35,414 INFO L495 AbstractCegarLoop]: Abstraction has 11276 states and 18249 transitions. [2023-12-15 21:23:35,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.4) internal successors, (164), 10 states have internal predecessors, (164), 3 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 3 states have call predecessors, (100), 3 states have call successors, (100) [2023-12-15 21:23:35,414 INFO L276 IsEmpty]: Start isEmpty. Operand 11276 states and 18249 transitions. [2023-12-15 21:23:35,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2023-12-15 21:23:35,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:23:35,425 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:23:35,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 21:23:35,636 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 [2023-12-15 21:23:35,636 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:23:35,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:23:35,637 INFO L85 PathProgramCache]: Analyzing trace with hash 2023744518, now seen corresponding path program 1 times [2023-12-15 21:23:35,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:23:35,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210268221] [2023-12-15 21:23:35,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:35,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:23:35,673 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:23:35,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2041842980] [2023-12-15 21:23:35,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:35,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:23:35,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:23:35,674 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) [2023-12-15 21:23:35,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 21:23:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:23:35,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 1169 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 21:23:35,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:23:36,839 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 3217 proven. 156 refuted. 0 times theorem prover too weak. 5739 trivial. 0 not checked. [2023-12-15 21:23:36,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:23:37,333 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 45 proven. 156 refuted. 0 times theorem prover too weak. 8911 trivial. 0 not checked. [2023-12-15 21:23:37,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:23:37,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210268221] [2023-12-15 21:23:37,334 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:23:37,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041842980] [2023-12-15 21:23:37,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041842980] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:23:37,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:23:37,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-12-15 21:23:37,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631203489] [2023-12-15 21:23:37,335 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:23:37,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 21:23:37,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:23:37,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 21:23:37,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-12-15 21:23:37,337 INFO L87 Difference]: Start difference. First operand 11276 states and 18249 transitions. Second operand has 13 states, 13 states have (on average 15.692307692307692) internal successors, (204), 13 states have internal predecessors, (204), 4 states have call successors, (136), 3 states have call predecessors, (136), 5 states have return successors, (136), 4 states have call predecessors, (136), 4 states have call successors, (136) [2023-12-15 21:23:40,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:23:40,577 INFO L93 Difference]: Finished difference Result 38734 states and 62202 transitions. [2023-12-15 21:23:40,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-15 21:23:40,577 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.692307692307692) internal successors, (204), 13 states have internal predecessors, (204), 4 states have call successors, (136), 3 states have call predecessors, (136), 5 states have return successors, (136), 4 states have call predecessors, (136), 4 states have call successors, (136) Word has length 465 [2023-12-15 21:23:40,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:23:40,636 INFO L225 Difference]: With dead ends: 38734 [2023-12-15 21:23:40,636 INFO L226 Difference]: Without dead ends: 27648 [2023-12-15 21:23:40,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 981 GetRequests, 926 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=768, Invalid=2202, Unknown=0, NotChecked=0, Total=2970 [2023-12-15 21:23:40,654 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 4538 mSDsluCounter, 4941 mSDsCounter, 0 mSdLazyCounter, 1840 mSolverCounterSat, 1105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4570 SdHoareTripleChecker+Valid, 5303 SdHoareTripleChecker+Invalid, 2945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1105 IncrementalHoareTripleChecker+Valid, 1840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:23:40,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4570 Valid, 5303 Invalid, 2945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1105 Valid, 1840 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-15 21:23:40,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27648 states. [2023-12-15 21:23:41,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27648 to 18566. [2023-12-15 21:23:41,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18566 states, 16735 states have (on average 1.5800418285031372) internal successors, (26442), 16771 states have internal predecessors, (26442), 1684 states have call successors, (1684), 146 states have call predecessors, (1684), 146 states have return successors, (1684), 1648 states have call predecessors, (1684), 1684 states have call successors, (1684) [2023-12-15 21:23:41,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18566 states to 18566 states and 29810 transitions. [2023-12-15 21:23:41,664 INFO L78 Accepts]: Start accepts. Automaton has 18566 states and 29810 transitions. Word has length 465 [2023-12-15 21:23:41,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:23:41,665 INFO L495 AbstractCegarLoop]: Abstraction has 18566 states and 29810 transitions. [2023-12-15 21:23:41,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.692307692307692) internal successors, (204), 13 states have internal predecessors, (204), 4 states have call successors, (136), 3 states have call predecessors, (136), 5 states have return successors, (136), 4 states have call predecessors, (136), 4 states have call successors, (136) [2023-12-15 21:23:41,665 INFO L276 IsEmpty]: Start isEmpty. Operand 18566 states and 29810 transitions. [2023-12-15 21:23:41,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2023-12-15 21:23:41,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:23:41,677 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:23:41,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 21:23:41,884 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 [2023-12-15 21:23:41,885 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:23:41,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:23:41,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1623990782, now seen corresponding path program 1 times [2023-12-15 21:23:41,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:23:41,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793224528] [2023-12-15 21:23:41,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:41,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:23:41,922 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:23:41,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1084789724] [2023-12-15 21:23:41,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:41,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:23:41,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:23:41,924 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) [2023-12-15 21:23:41,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 21:23:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:23:42,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 1170 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-15 21:23:42,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:23:44,006 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 4551 proven. 87 refuted. 0 times theorem prover too weak. 4474 trivial. 0 not checked. [2023-12-15 21:23:44,006 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:23:45,717 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 114 proven. 87 refuted. 0 times theorem prover too weak. 8911 trivial. 0 not checked. [2023-12-15 21:23:45,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:23:45,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793224528] [2023-12-15 21:23:45,717 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:23:45,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084789724] [2023-12-15 21:23:45,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084789724] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:23:45,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:23:45,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2023-12-15 21:23:45,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134360927] [2023-12-15 21:23:45,720 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:23:45,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-15 21:23:45,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:23:45,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-15 21:23:45,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2023-12-15 21:23:45,722 INFO L87 Difference]: Start difference. First operand 18566 states and 29810 transitions. Second operand has 19 states, 19 states have (on average 12.947368421052632) internal successors, (246), 19 states have internal predecessors, (246), 4 states have call successors, (136), 3 states have call predecessors, (136), 5 states have return successors, (136), 4 states have call predecessors, (136), 4 states have call successors, (136) [2023-12-15 21:23:51,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:23:51,062 INFO L93 Difference]: Finished difference Result 68522 states and 111140 transitions. [2023-12-15 21:23:51,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-15 21:23:51,063 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.947368421052632) internal successors, (246), 19 states have internal predecessors, (246), 4 states have call successors, (136), 3 states have call predecessors, (136), 5 states have return successors, (136), 4 states have call predecessors, (136), 4 states have call successors, (136) Word has length 465 [2023-12-15 21:23:51,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:23:51,145 INFO L225 Difference]: With dead ends: 68522 [2023-12-15 21:23:51,146 INFO L226 Difference]: Without dead ends: 50150 [2023-12-15 21:23:51,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 977 GetRequests, 917 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1274 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=947, Invalid=2835, Unknown=0, NotChecked=0, Total=3782 [2023-12-15 21:23:51,175 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 6004 mSDsluCounter, 5212 mSDsCounter, 0 mSdLazyCounter, 3903 mSolverCounterSat, 1072 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6077 SdHoareTripleChecker+Valid, 5736 SdHoareTripleChecker+Invalid, 4975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1072 IncrementalHoareTripleChecker+Valid, 3903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:23:51,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6077 Valid, 5736 Invalid, 4975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1072 Valid, 3903 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-15 21:23:51,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50150 states. [2023-12-15 21:23:52,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50150 to 35456. [2023-12-15 21:23:52,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35456 states, 32531 states have (on average 1.5949709507854046) internal successors, (51886), 32623 states have internal predecessors, (51886), 2646 states have call successors, (2646), 278 states have call predecessors, (2646), 278 states have return successors, (2646), 2554 states have call predecessors, (2646), 2646 states have call successors, (2646) [2023-12-15 21:23:52,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35456 states to 35456 states and 57178 transitions. [2023-12-15 21:23:52,640 INFO L78 Accepts]: Start accepts. Automaton has 35456 states and 57178 transitions. Word has length 465 [2023-12-15 21:23:52,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:23:52,641 INFO L495 AbstractCegarLoop]: Abstraction has 35456 states and 57178 transitions. [2023-12-15 21:23:52,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.947368421052632) internal successors, (246), 19 states have internal predecessors, (246), 4 states have call successors, (136), 3 states have call predecessors, (136), 5 states have return successors, (136), 4 states have call predecessors, (136), 4 states have call successors, (136) [2023-12-15 21:23:52,641 INFO L276 IsEmpty]: Start isEmpty. Operand 35456 states and 57178 transitions. [2023-12-15 21:23:52,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2023-12-15 21:23:52,653 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:23:52,653 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:23:52,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-15 21:23:52,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:23:52,860 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:23:52,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:23:52,861 INFO L85 PathProgramCache]: Analyzing trace with hash -102142905, now seen corresponding path program 1 times [2023-12-15 21:23:52,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:23:52,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902261139] [2023-12-15 21:23:52,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:52,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:23:52,901 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:23:52,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [687319099] [2023-12-15 21:23:52,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:52,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:23:52,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:23:52,902 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:23:52,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 21:23:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:23:53,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 1177 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 21:23:53,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:23:53,670 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2023-12-15 21:23:53,670 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:23:53,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:23:53,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902261139] [2023-12-15 21:23:53,670 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:23:53,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687319099] [2023-12-15 21:23:53,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687319099] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:23:53,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:23:53,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:23:53,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034636892] [2023-12-15 21:23:53,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:23:53,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:23:53,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:23:53,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:23:53,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:23:53,672 INFO L87 Difference]: Start difference. First operand 35456 states and 57178 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-15 21:23:55,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:23:55,754 INFO L93 Difference]: Finished difference Result 117312 states and 190462 transitions. [2023-12-15 21:23:55,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:23:55,755 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 467 [2023-12-15 21:23:55,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:23:55,892 INFO L225 Difference]: With dead ends: 117312 [2023-12-15 21:23:55,893 INFO L226 Difference]: Without dead ends: 82058 [2023-12-15 21:23:55,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:23:55,945 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 1615 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:23:55,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1615 Valid, 2112 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:23:56,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82058 states. [2023-12-15 21:23:58,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82058 to 70708. [2023-12-15 21:23:58,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70708 states, 64935 states have (on average 1.5858627858627858) internal successors, (102978), 65119 states have internal predecessors, (102978), 5224 states have call successors, (5224), 548 states have call predecessors, (5224), 548 states have return successors, (5224), 5040 states have call predecessors, (5224), 5224 states have call successors, (5224) [2023-12-15 21:23:58,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70708 states to 70708 states and 113426 transitions. [2023-12-15 21:23:58,433 INFO L78 Accepts]: Start accepts. Automaton has 70708 states and 113426 transitions. Word has length 467 [2023-12-15 21:23:58,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:23:58,433 INFO L495 AbstractCegarLoop]: Abstraction has 70708 states and 113426 transitions. [2023-12-15 21:23:58,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-15 21:23:58,433 INFO L276 IsEmpty]: Start isEmpty. Operand 70708 states and 113426 transitions. [2023-12-15 21:23:58,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2023-12-15 21:23:58,454 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:23:58,455 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:23:58,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-15 21:23:58,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 21:23:58,655 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:23:58,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:23:58,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1615925388, now seen corresponding path program 1 times [2023-12-15 21:23:58,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:23:58,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385935667] [2023-12-15 21:23:58,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:58,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:23:58,690 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:23:58,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [408259003] [2023-12-15 21:23:58,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:23:58,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:23:58,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:23:58,691 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:23:58,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-15 21:23:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:23:59,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:23:59,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:23:59,036 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2023-12-15 21:23:59,036 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:23:59,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:23:59,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385935667] [2023-12-15 21:23:59,036 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:23:59,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408259003] [2023-12-15 21:23:59,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408259003] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:23:59,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:23:59,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:23:59,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002565344] [2023-12-15 21:23:59,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:23:59,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:23:59,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:23:59,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:23:59,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:23:59,038 INFO L87 Difference]: Start difference. First operand 70708 states and 113426 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-15 21:24:00,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:24:00,892 INFO L93 Difference]: Finished difference Result 104286 states and 167747 transitions. [2023-12-15 21:24:00,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:24:00,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 468 [2023-12-15 21:24:00,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:24:01,021 INFO L225 Difference]: With dead ends: 104286 [2023-12-15 21:24:01,021 INFO L226 Difference]: Without dead ends: 71116 [2023-12-15 21:24:01,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:24:01,057 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 0 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:24:01,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 845 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:24:01,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71116 states. [2023-12-15 21:24:03,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71116 to 71116. [2023-12-15 21:24:03,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71116 states, 65343 states have (on average 1.5822046737982645) internal successors, (103386), 65527 states have internal predecessors, (103386), 5224 states have call successors, (5224), 548 states have call predecessors, (5224), 548 states have return successors, (5224), 5040 states have call predecessors, (5224), 5224 states have call successors, (5224) [2023-12-15 21:24:03,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71116 states to 71116 states and 113834 transitions. [2023-12-15 21:24:03,567 INFO L78 Accepts]: Start accepts. Automaton has 71116 states and 113834 transitions. Word has length 468 [2023-12-15 21:24:03,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:24:03,568 INFO L495 AbstractCegarLoop]: Abstraction has 71116 states and 113834 transitions. [2023-12-15 21:24:03,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-15 21:24:03,568 INFO L276 IsEmpty]: Start isEmpty. Operand 71116 states and 113834 transitions. [2023-12-15 21:24:03,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2023-12-15 21:24:03,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:24:03,590 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:24:03,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-15 21:24:03,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-15 21:24:03,797 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:24:03,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:24:03,798 INFO L85 PathProgramCache]: Analyzing trace with hash 429538652, now seen corresponding path program 1 times [2023-12-15 21:24:03,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:24:03,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089553232] [2023-12-15 21:24:03,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:24:03,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:24:03,843 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:24:03,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [34203146] [2023-12-15 21:24:03,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:24:03,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:24:03,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:24:03,845 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:24:03,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-15 21:24:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:24:04,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:24:04,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:24:04,508 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 2901 proven. 162 refuted. 0 times theorem prover too weak. 6049 trivial. 0 not checked. [2023-12-15 21:24:04,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:24:04,748 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 39 proven. 162 refuted. 0 times theorem prover too weak. 8911 trivial. 0 not checked. [2023-12-15 21:24:04,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:24:04,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089553232] [2023-12-15 21:24:04,749 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:24:04,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34203146] [2023-12-15 21:24:04,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34203146] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:24:04,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:24:04,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:24:04,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605213214] [2023-12-15 21:24:04,749 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:24:04,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:24:04,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:24:04,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:24:04,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:24:04,751 INFO L87 Difference]: Start difference. First operand 71116 states and 113834 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 2 states have call successors, (122), 2 states have call predecessors, (122), 4 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) [2023-12-15 21:24:05,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:24:05,278 INFO L93 Difference]: Finished difference Result 74038 states and 118336 transitions. [2023-12-15 21:24:05,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:24:05,278 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 2 states have call successors, (122), 2 states have call predecessors, (122), 4 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) Word has length 468 [2023-12-15 21:24:05,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:24:05,283 INFO L225 Difference]: With dead ends: 74038 [2023-12-15 21:24:05,283 INFO L226 Difference]: Without dead ends: 3110 [2023-12-15 21:24:05,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 938 GetRequests, 928 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:24:05,335 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 456 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:24:05,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 836 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:24:05,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3110 states. [2023-12-15 21:24:05,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3110 to 2871. [2023-12-15 21:24:05,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2871 states, 2493 states have (on average 1.4821500200561573) internal successors, (3695), 2493 states have internal predecessors, (3695), 340 states have call successors, (340), 37 states have call predecessors, (340), 37 states have return successors, (340), 340 states have call predecessors, (340), 340 states have call successors, (340) [2023-12-15 21:24:05,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2871 states to 2871 states and 4375 transitions. [2023-12-15 21:24:05,650 INFO L78 Accepts]: Start accepts. Automaton has 2871 states and 4375 transitions. Word has length 468 [2023-12-15 21:24:05,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:24:05,651 INFO L495 AbstractCegarLoop]: Abstraction has 2871 states and 4375 transitions. [2023-12-15 21:24:05,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 2 states have call successors, (122), 2 states have call predecessors, (122), 4 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) [2023-12-15 21:24:05,651 INFO L276 IsEmpty]: Start isEmpty. Operand 2871 states and 4375 transitions. [2023-12-15 21:24:05,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2023-12-15 21:24:05,653 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:24:05,653 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:24:05,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-15 21:24:05,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-15 21:24:05,861 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:24:05,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:24:05,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1877061987, now seen corresponding path program 1 times [2023-12-15 21:24:05,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:24:05,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280192219] [2023-12-15 21:24:05,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:24:05,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:24:05,903 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:24:05,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1259629267] [2023-12-15 21:24:05,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:24:05,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:24:05,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:24:05,919 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:24:05,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-15 21:24:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:24:06,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 1177 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:24:06,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:24:07,134 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2023-12-15 21:24:07,134 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:24:07,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:24:07,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280192219] [2023-12-15 21:24:07,135 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:24:07,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259629267] [2023-12-15 21:24:07,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259629267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:24:07,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:24:07,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:24:07,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055662693] [2023-12-15 21:24:07,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:24:07,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:24:07,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:24:07,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:24:07,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:24:07,136 INFO L87 Difference]: Start difference. First operand 2871 states and 4375 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-15 21:24:07,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:24:07,333 INFO L93 Difference]: Finished difference Result 7979 states and 12221 transitions. [2023-12-15 21:24:07,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:24:07,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 469 [2023-12-15 21:24:07,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:24:07,339 INFO L225 Difference]: With dead ends: 7979 [2023-12-15 21:24:07,340 INFO L226 Difference]: Without dead ends: 5465 [2023-12-15 21:24:07,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:24:07,343 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 209 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:24:07,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 1295 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:24:07,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5465 states. [2023-12-15 21:24:07,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5465 to 5447. [2023-12-15 21:24:07,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5447 states, 4769 states have (on average 1.4852170266303208) internal successors, (7083), 4769 states have internal predecessors, (7083), 612 states have call successors, (612), 65 states have call predecessors, (612), 65 states have return successors, (612), 612 states have call predecessors, (612), 612 states have call successors, (612) [2023-12-15 21:24:07,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5447 states to 5447 states and 8307 transitions. [2023-12-15 21:24:07,533 INFO L78 Accepts]: Start accepts. Automaton has 5447 states and 8307 transitions. Word has length 469 [2023-12-15 21:24:07,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:24:07,534 INFO L495 AbstractCegarLoop]: Abstraction has 5447 states and 8307 transitions. [2023-12-15 21:24:07,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-15 21:24:07,534 INFO L276 IsEmpty]: Start isEmpty. Operand 5447 states and 8307 transitions. [2023-12-15 21:24:07,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2023-12-15 21:24:07,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:24:07,569 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:24:07,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-15 21:24:07,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-15 21:24:07,774 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:24:07,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:24:07,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1290285684, now seen corresponding path program 1 times [2023-12-15 21:24:07,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:24:07,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242014836] [2023-12-15 21:24:07,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:24:07,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:24:07,817 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:24:07,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1886609718] [2023-12-15 21:24:07,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:24:07,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:24:07,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:24:07,819 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:24:07,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-15 21:24:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:24:08,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 21:24:08,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:24:08,707 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2023-12-15 21:24:08,707 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:24:08,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:24:08,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242014836] [2023-12-15 21:24:08,707 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:24:08,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886609718] [2023-12-15 21:24:08,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886609718] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:24:08,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:24:08,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 21:24:08,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522587171] [2023-12-15 21:24:08,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:24:08,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 21:24:08,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:24:08,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 21:24:08,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:24:08,710 INFO L87 Difference]: Start difference. First operand 5447 states and 8307 transitions. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 8 states have internal predecessors, (133), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2023-12-15 21:24:10,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:24:10,688 INFO L93 Difference]: Finished difference Result 26540 states and 40562 transitions. [2023-12-15 21:24:10,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 21:24:10,688 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 8 states have internal predecessors, (133), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 470 [2023-12-15 21:24:10,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:24:10,717 INFO L225 Difference]: With dead ends: 26540 [2023-12-15 21:24:10,717 INFO L226 Difference]: Without dead ends: 21426 [2023-12-15 21:24:10,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2023-12-15 21:24:10,727 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 2443 mSDsluCounter, 2538 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 660 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2443 SdHoareTripleChecker+Valid, 3228 SdHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 660 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:24:10,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2443 Valid, 3228 Invalid, 1586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [660 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 21:24:10,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21426 states. Received shutdown request... [2023-12-15 21:24:10,775 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:24:10,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-15 21:24:10,793 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:24:10,793 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:24:10,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:24:10,976 WARN L619 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2023-12-15 21:24:10,979 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:24:10,981 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:24:10,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:24:10 BoogieIcfgContainer [2023-12-15 21:24:10,982 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:24:10,983 INFO L158 Benchmark]: Toolchain (without parser) took 56960.96ms. Allocated memory was 195.0MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 160.0MB in the beginning and 2.7GB in the end (delta: -2.5GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2023-12-15 21:24:10,983 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 195.0MB. Free memory is still 152.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:24:10,983 INFO L158 Benchmark]: CACSL2BoogieTranslator took 451.88ms. Allocated memory is still 195.0MB. Free memory was 159.6MB in the beginning and 119.3MB in the end (delta: 40.3MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. [2023-12-15 21:24:10,983 INFO L158 Benchmark]: Boogie Procedure Inliner took 153.67ms. Allocated memory was 195.0MB in the beginning and 261.1MB in the end (delta: 66.1MB). Free memory was 119.3MB in the beginning and 218.0MB in the end (delta: -98.6MB). Peak memory consumption was 29.2MB. Max. memory is 8.0GB. [2023-12-15 21:24:10,983 INFO L158 Benchmark]: Boogie Preprocessor took 190.96ms. Allocated memory is still 261.1MB. Free memory was 218.0MB in the beginning and 161.1MB in the end (delta: 56.9MB). Peak memory consumption was 54.5MB. Max. memory is 8.0GB. [2023-12-15 21:24:10,984 INFO L158 Benchmark]: RCFGBuilder took 1108.35ms. Allocated memory is still 261.1MB. Free memory was 161.1MB in the beginning and 181.2MB in the end (delta: -20.1MB). Peak memory consumption was 26.3MB. Max. memory is 8.0GB. [2023-12-15 21:24:10,984 INFO L158 Benchmark]: TraceAbstraction took 55051.72ms. Allocated memory was 261.1MB in the beginning and 3.7GB in the end (delta: 3.4GB). Free memory was 180.1MB in the beginning and 2.7GB in the end (delta: -2.5GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-15 21:24:10,985 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 195.0MB. Free memory is still 152.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 451.88ms. Allocated memory is still 195.0MB. Free memory was 159.6MB in the beginning and 119.3MB in the end (delta: 40.3MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 153.67ms. Allocated memory was 195.0MB in the beginning and 261.1MB in the end (delta: 66.1MB). Free memory was 119.3MB in the beginning and 218.0MB in the end (delta: -98.6MB). Peak memory consumption was 29.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 190.96ms. Allocated memory is still 261.1MB. Free memory was 218.0MB in the beginning and 161.1MB in the end (delta: 56.9MB). Peak memory consumption was 54.5MB. Max. memory is 8.0GB. * RCFGBuilder took 1108.35ms. Allocated memory is still 261.1MB. Free memory was 161.1MB in the beginning and 181.2MB in the end (delta: -20.1MB). Peak memory consumption was 26.3MB. Max. memory is 8.0GB. * TraceAbstraction took 55051.72ms. Allocated memory was 261.1MB in the beginning and 3.7GB in the end (delta: 3.4GB). Free memory was 180.1MB in the beginning and 2.7GB in the end (delta: -2.5GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 267 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 55.0s, OverallIterations: 19, TraceHistogramMax: 68, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 20.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22497 SdHoareTripleChecker+Valid, 9.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22304 mSDsluCounter, 35788 SdHoareTripleChecker+Invalid, 8.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26308 mSDsCounter, 3760 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9995 IncrementalHoareTripleChecker+Invalid, 13755 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3760 mSolverCounterUnsat, 9480 mSDtfsCounter, 9995 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11718 GetRequests, 11503 SyntacticMatches, 4 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2416 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71116occurred in iteration=16, InterpolantAutomatonStates: 211, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 10.8s AutomataMinimizationTime, 19 MinimizatonAttempts, 42659 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.2s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 12.3s InterpolantComputationTime, 9273 NumberOfCodeBlocks, 9273 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 11578 ConstructedInterpolants, 0 QuantifiedInterpolants, 42771 SizeOfPredicates, 55 NumberOfNonLiveVariables, 22257 ConjunctsInSsa, 135 ConjunctsInUnsatCore, 25 InterpolantComputations, 13 PerfectInterpolantSequences, 226240/227800 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown