/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-81.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 06:40:56,674 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 06:40:56,742 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 06:40:56,746 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 06:40:56,746 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 06:40:56,770 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 06:40:56,770 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 06:40:56,770 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 06:40:56,771 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 06:40:56,774 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 06:40:56,774 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 06:40:56,775 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 06:40:56,775 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 06:40:56,776 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 06:40:56,776 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 06:40:56,776 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 06:40:56,777 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 06:40:56,777 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 06:40:56,777 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 06:40:56,777 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 06:40:56,777 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 06:40:56,778 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 06:40:56,778 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 06:40:56,778 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 06:40:56,778 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 06:40:56,778 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 06:40:56,778 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 06:40:56,778 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 06:40:56,779 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 06:40:56,779 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 06:40:56,780 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 06:40:56,780 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 06:40:56,780 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 06:40:56,780 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 06:40:56,780 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 06:40:56,780 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 06:40:56,780 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 06:40:56,781 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 06:40:56,781 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 06:40:56,781 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 06:40:56,781 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 06:40:56,782 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 06:40:56,782 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 06:40:56,782 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 06:40:56,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 06:40:57,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 06:40:57,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 06:40:57,021 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 06:40:57,021 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 06:40:57,022 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-81.i [2023-12-19 06:40:58,130 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 06:40:58,311 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 06:40:58,311 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-81.i [2023-12-19 06:40:58,319 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59ff20834/15f217e31a43436f9d478c8f18f9687a/FLAG91a5bda0b [2023-12-19 06:40:58,331 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59ff20834/15f217e31a43436f9d478c8f18f9687a [2023-12-19 06:40:58,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 06:40:58,334 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 06:40:58,335 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 06:40:58,335 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 06:40:58,338 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 06:40:58,339 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:40:58" (1/1) ... [2023-12-19 06:40:58,339 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f5e81f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:40:58, skipping insertion in model container [2023-12-19 06:40:58,340 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:40:58" (1/1) ... [2023-12-19 06:40:58,370 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 06:40:58,478 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-81.i[915,928] [2023-12-19 06:40:58,535 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 06:40:58,549 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 06:40:58,557 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-81.i[915,928] [2023-12-19 06:40:58,601 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 06:40:58,624 INFO L206 MainTranslator]: Completed translation [2023-12-19 06:40:58,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:40:58 WrapperNode [2023-12-19 06:40:58,625 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 06:40:58,626 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 06:40:58,626 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 06:40:58,626 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 06:40:58,631 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:40:58" (1/1) ... [2023-12-19 06:40:58,640 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:40:58" (1/1) ... [2023-12-19 06:40:58,678 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 222 [2023-12-19 06:40:58,678 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 06:40:58,679 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 06:40:58,679 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 06:40:58,679 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 06:40:58,687 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:40:58" (1/1) ... [2023-12-19 06:40:58,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:40:58" (1/1) ... [2023-12-19 06:40:58,695 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:40:58" (1/1) ... [2023-12-19 06:40:58,733 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 06:40:58,734 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:40:58" (1/1) ... [2023-12-19 06:40:58,734 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:40:58" (1/1) ... [2023-12-19 06:40:58,750 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:40:58" (1/1) ... [2023-12-19 06:40:58,761 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:40:58" (1/1) ... [2023-12-19 06:40:58,767 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:40:58" (1/1) ... [2023-12-19 06:40:58,769 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:40:58" (1/1) ... [2023-12-19 06:40:58,774 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 06:40:58,776 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 06:40:58,776 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 06:40:58,776 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 06:40:58,777 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:40:58" (1/1) ... [2023-12-19 06:40:58,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 06:40:58,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:40:58,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 06:40:58,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 06:40:58,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 06:40:58,836 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 06:40:58,837 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 06:40:58,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 06:40:58,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 06:40:58,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 06:40:58,919 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 06:40:58,921 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 06:40:59,232 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 06:40:59,279 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 06:40:59,280 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 06:40:59,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:40:59 BoogieIcfgContainer [2023-12-19 06:40:59,280 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 06:40:59,282 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 06:40:59,282 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 06:40:59,284 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 06:40:59,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 06:40:58" (1/3) ... [2023-12-19 06:40:59,285 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429dad2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:40:59, skipping insertion in model container [2023-12-19 06:40:59,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:40:58" (2/3) ... [2023-12-19 06:40:59,285 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429dad2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:40:59, skipping insertion in model container [2023-12-19 06:40:59,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:40:59" (3/3) ... [2023-12-19 06:40:59,286 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-10_file-81.i [2023-12-19 06:40:59,299 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 06:40:59,300 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 06:40:59,343 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 06:40:59,348 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;@586cef5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 06:40:59,348 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 06:40:59,352 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 46 states have (on average 1.4130434782608696) internal successors, (65), 47 states have internal predecessors, (65), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-19 06:40:59,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-19 06:40:59,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:40:59,367 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:40:59,367 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:40:59,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:40:59,372 INFO L85 PathProgramCache]: Analyzing trace with hash 159431118, now seen corresponding path program 1 times [2023-12-19 06:40:59,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:40:59,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488047548] [2023-12-19 06:40:59,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:40:59,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:40:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:40:59,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:40:59,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488047548] [2023-12-19 06:40:59,528 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 06:40:59,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106852089] [2023-12-19 06:40:59,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:40:59,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:40:59,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:40:59,531 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:40:59,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 06:40:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:40:59,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 06:40:59,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:40:59,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2023-12-19 06:40:59,713 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:40:59,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106852089] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:40:59,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:40:59,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 06:40:59,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353029422] [2023-12-19 06:40:59,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:40:59,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 06:40:59,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:40:59,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 06:40:59,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 06:40:59,739 INFO L87 Difference]: Start difference. First operand has 82 states, 46 states have (on average 1.4130434782608696) internal successors, (65), 47 states have internal predecessors, (65), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-19 06:40:59,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:40:59,771 INFO L93 Difference]: Finished difference Result 161 states and 293 transitions. [2023-12-19 06:40:59,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 06:40:59,773 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) Word has length 200 [2023-12-19 06:40:59,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:40:59,778 INFO L225 Difference]: With dead ends: 161 [2023-12-19 06:40:59,778 INFO L226 Difference]: Without dead ends: 80 [2023-12-19 06:40:59,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 06:40:59,784 INFO L413 NwaCegarLoop]: 123 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, 123 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:40:59,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:40:59,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-12-19 06:40:59,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-12-19 06:40:59,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 45 states have internal predecessors, (60), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-19 06:40:59,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 126 transitions. [2023-12-19 06:40:59,826 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 126 transitions. Word has length 200 [2023-12-19 06:40:59,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:40:59,826 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 126 transitions. [2023-12-19 06:40:59,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-19 06:40:59,826 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 126 transitions. [2023-12-19 06:40:59,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-19 06:40:59,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:40:59,830 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:40:59,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 06:41:00,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 06:41:00,040 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:41:00,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:41:00,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1116645004, now seen corresponding path program 1 times [2023-12-19 06:41:00,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:41:00,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205077582] [2023-12-19 06:41:00,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:41:00,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:41:00,142 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:41:00,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1784621414] [2023-12-19 06:41:00,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:41:00,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:41:00,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:41:00,146 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:41:00,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 06:41:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:41:00,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 06:41:00,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:41:00,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 876 proven. 159 refuted. 0 times theorem prover too weak. 1077 trivial. 0 not checked. [2023-12-19 06:41:00,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:41:01,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 27 proven. 162 refuted. 0 times theorem prover too weak. 1923 trivial. 0 not checked. [2023-12-19 06:41:01,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:41:01,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205077582] [2023-12-19 06:41:01,314 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:41:01,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784621414] [2023-12-19 06:41:01,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784621414] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:41:01,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:41:01,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-19 06:41:01,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908422422] [2023-12-19 06:41:01,315 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:41:01,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 06:41:01,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:41:01,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 06:41:01,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-12-19 06:41:01,321 INFO L87 Difference]: Start difference. First operand 80 states and 126 transitions. Second operand has 16 states, 16 states have (on average 5.1875) internal successors, (83), 16 states have internal predecessors, (83), 5 states have call successors, (65), 3 states have call predecessors, (65), 7 states have return successors, (66), 4 states have call predecessors, (66), 5 states have call successors, (66) [2023-12-19 06:41:01,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:41:01,901 INFO L93 Difference]: Finished difference Result 254 states and 375 transitions. [2023-12-19 06:41:01,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-19 06:41:01,902 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 16 states have internal predecessors, (83), 5 states have call successors, (65), 3 states have call predecessors, (65), 7 states have return successors, (66), 4 states have call predecessors, (66), 5 states have call successors, (66) Word has length 200 [2023-12-19 06:41:01,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:41:01,904 INFO L225 Difference]: With dead ends: 254 [2023-12-19 06:41:01,904 INFO L226 Difference]: Without dead ends: 175 [2023-12-19 06:41:01,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=356, Invalid=834, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 06:41:01,906 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 166 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 06:41:01,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 265 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 06:41:01,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-12-19 06:41:01,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 127. [2023-12-19 06:41:01,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 78 states have (on average 1.2692307692307692) internal successors, (99), 79 states have internal predecessors, (99), 43 states have call successors, (43), 5 states have call predecessors, (43), 5 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-19 06:41:01,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 185 transitions. [2023-12-19 06:41:01,923 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 185 transitions. Word has length 200 [2023-12-19 06:41:01,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:41:01,924 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 185 transitions. [2023-12-19 06:41:01,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 16 states have internal predecessors, (83), 5 states have call successors, (65), 3 states have call predecessors, (65), 7 states have return successors, (66), 4 states have call predecessors, (66), 5 states have call successors, (66) [2023-12-19 06:41:01,924 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 185 transitions. [2023-12-19 06:41:01,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-12-19 06:41:01,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:41:01,926 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:41:01,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 06:41:02,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 06:41:02,133 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:41:02,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:41:02,134 INFO L85 PathProgramCache]: Analyzing trace with hash -84389144, now seen corresponding path program 1 times [2023-12-19 06:41:02,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:41:02,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466088734] [2023-12-19 06:41:02,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:41:02,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:41:02,180 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:41:02,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [318116129] [2023-12-19 06:41:02,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:41:02,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:41:02,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:41:02,206 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:41:02,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 06:41:02,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:41:02,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 06:41:02,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:41:02,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 816 proven. 72 refuted. 0 times theorem prover too weak. 1224 trivial. 0 not checked. [2023-12-19 06:41:02,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:41:02,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 24 proven. 72 refuted. 0 times theorem prover too weak. 2016 trivial. 0 not checked. [2023-12-19 06:41:02,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:41:02,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466088734] [2023-12-19 06:41:02,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:41:02,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318116129] [2023-12-19 06:41:02,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318116129] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:41:02,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:41:02,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-12-19 06:41:02,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562260421] [2023-12-19 06:41:02,797 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:41:02,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-19 06:41:02,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:41:02,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-19 06:41:02,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2023-12-19 06:41:02,801 INFO L87 Difference]: Start difference. First operand 127 states and 185 transitions. Second operand has 20 states, 20 states have (on average 3.65) internal successors, (73), 20 states have internal predecessors, (73), 3 states have call successors, (57), 2 states have call predecessors, (57), 4 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2023-12-19 06:41:04,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:41:04,788 INFO L93 Difference]: Finished difference Result 642 states and 890 transitions. [2023-12-19 06:41:04,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-19 06:41:04,788 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.65) internal successors, (73), 20 states have internal predecessors, (73), 3 states have call successors, (57), 2 states have call predecessors, (57), 4 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 201 [2023-12-19 06:41:04,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:41:04,793 INFO L225 Difference]: With dead ends: 642 [2023-12-19 06:41:04,793 INFO L226 Difference]: Without dead ends: 516 [2023-12-19 06:41:04,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1134 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=950, Invalid=3472, Unknown=0, NotChecked=0, Total=4422 [2023-12-19 06:41:04,796 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 1037 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 2060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 06:41:04,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 755 Invalid, 2060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 06:41:04,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2023-12-19 06:41:04,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 336. [2023-12-19 06:41:04,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 220 states have (on average 1.2045454545454546) internal successors, (265), 226 states have internal predecessors, (265), 91 states have call successors, (91), 24 states have call predecessors, (91), 24 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-19 06:41:04,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 447 transitions. [2023-12-19 06:41:04,869 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 447 transitions. Word has length 201 [2023-12-19 06:41:04,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:41:04,870 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 447 transitions. [2023-12-19 06:41:04,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.65) internal successors, (73), 20 states have internal predecessors, (73), 3 states have call successors, (57), 2 states have call predecessors, (57), 4 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2023-12-19 06:41:04,870 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 447 transitions. [2023-12-19 06:41:04,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-19 06:41:04,872 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:41:04,872 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:41:04,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 06:41:05,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:41:05,073 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:41:05,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:41:05,074 INFO L85 PathProgramCache]: Analyzing trace with hash -974162193, now seen corresponding path program 1 times [2023-12-19 06:41:05,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:41:05,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831557261] [2023-12-19 06:41:05,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:41:05,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:41:05,101 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:41:05,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [916276140] [2023-12-19 06:41:05,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:41:05,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:41:05,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:41:05,103 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:41:05,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 06:41:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:41:05,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 06:41:05,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:41:05,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 06:41:05,225 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:41:05,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:41:05,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831557261] [2023-12-19 06:41:05,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:41:05,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916276140] [2023-12-19 06:41:05,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916276140] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:41:05,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:41:05,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 06:41:05,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003740709] [2023-12-19 06:41:05,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:41:05,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:41:05,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:41:05,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:41:05,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:41:05,227 INFO L87 Difference]: Start difference. First operand 336 states and 447 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 06:41:05,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:41:05,270 INFO L93 Difference]: Finished difference Result 798 states and 1049 transitions. [2023-12-19 06:41:05,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:41:05,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 202 [2023-12-19 06:41:05,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:41:05,273 INFO L225 Difference]: With dead ends: 798 [2023-12-19 06:41:05,273 INFO L226 Difference]: Without dead ends: 500 [2023-12-19 06:41:05,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:41:05,275 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 27 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:41:05,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 241 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:41:05,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-12-19 06:41:05,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 492. [2023-12-19 06:41:05,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 340 states have (on average 1.1852941176470588) internal successors, (403), 352 states have internal predecessors, (403), 115 states have call successors, (115), 36 states have call predecessors, (115), 36 states have return successors, (115), 103 states have call predecessors, (115), 115 states have call successors, (115) [2023-12-19 06:41:05,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 633 transitions. [2023-12-19 06:41:05,307 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 633 transitions. Word has length 202 [2023-12-19 06:41:05,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:41:05,308 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 633 transitions. [2023-12-19 06:41:05,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 06:41:05,308 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 633 transitions. [2023-12-19 06:41:05,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-19 06:41:05,310 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:41:05,310 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:41:05,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 06:41:05,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:41:05,517 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:41:05,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:41:05,517 INFO L85 PathProgramCache]: Analyzing trace with hash -916903891, now seen corresponding path program 1 times [2023-12-19 06:41:05,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:41:05,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532158646] [2023-12-19 06:41:05,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:41:05,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:41:05,561 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:41:05,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1785026904] [2023-12-19 06:41:05,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:41:05,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:41:05,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:41:05,563 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:41:05,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 06:41:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:41:05,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 06:41:05,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:41:06,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 32 proven. 96 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-12-19 06:41:06,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:41:06,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2016 trivial. 0 not checked. [2023-12-19 06:41:06,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:41:06,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532158646] [2023-12-19 06:41:06,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:41:06,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785026904] [2023-12-19 06:41:06,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785026904] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:41:06,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:41:06,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-19 06:41:06,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899537498] [2023-12-19 06:41:06,528 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:41:06,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 06:41:06,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:41:06,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 06:41:06,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-12-19 06:41:06,529 INFO L87 Difference]: Start difference. First operand 492 states and 633 transitions. Second operand has 18 states, 17 states have (on average 4.352941176470588) internal successors, (74), 18 states have internal predecessors, (74), 4 states have call successors, (66), 3 states have call predecessors, (66), 4 states have return successors, (66), 2 states have call predecessors, (66), 4 states have call successors, (66) [2023-12-19 06:41:07,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:41:07,764 INFO L93 Difference]: Finished difference Result 1420 states and 1830 transitions. [2023-12-19 06:41:07,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-19 06:41:07,765 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.352941176470588) internal successors, (74), 18 states have internal predecessors, (74), 4 states have call successors, (66), 3 states have call predecessors, (66), 4 states have return successors, (66), 2 states have call predecessors, (66), 4 states have call successors, (66) Word has length 202 [2023-12-19 06:41:07,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:41:07,771 INFO L225 Difference]: With dead ends: 1420 [2023-12-19 06:41:07,771 INFO L226 Difference]: Without dead ends: 966 [2023-12-19 06:41:07,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=459, Invalid=1347, Unknown=0, NotChecked=0, Total=1806 [2023-12-19 06:41:07,774 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 889 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 06:41:07,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 647 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 06:41:07,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2023-12-19 06:41:07,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 680. [2023-12-19 06:41:07,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 466 states have (on average 1.1888412017167382) internal successors, (554), 481 states have internal predecessors, (554), 166 states have call successors, (166), 47 states have call predecessors, (166), 47 states have return successors, (166), 151 states have call predecessors, (166), 166 states have call successors, (166) [2023-12-19 06:41:07,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 886 transitions. [2023-12-19 06:41:07,835 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 886 transitions. Word has length 202 [2023-12-19 06:41:07,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:41:07,835 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 886 transitions. [2023-12-19 06:41:07,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.352941176470588) internal successors, (74), 18 states have internal predecessors, (74), 4 states have call successors, (66), 3 states have call predecessors, (66), 4 states have return successors, (66), 2 states have call predecessors, (66), 4 states have call successors, (66) [2023-12-19 06:41:07,835 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 886 transitions. [2023-12-19 06:41:07,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-19 06:41:07,837 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:41:07,837 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:41:07,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 06:41:08,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:41:08,043 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:41:08,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:41:08,044 INFO L85 PathProgramCache]: Analyzing trace with hash -330097877, now seen corresponding path program 1 times [2023-12-19 06:41:08,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:41:08,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357835004] [2023-12-19 06:41:08,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:41:08,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:41:08,061 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:41:08,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1125915311] [2023-12-19 06:41:08,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:41:08,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:41:08,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:41:08,062 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:41:08,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 06:41:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:41:08,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 06:41:08,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:41:08,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 32 proven. 96 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-12-19 06:41:08,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:41:08,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2016 trivial. 0 not checked. [2023-12-19 06:41:08,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:41:08,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357835004] [2023-12-19 06:41:08,957 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:41:08,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125915311] [2023-12-19 06:41:08,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125915311] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:41:08,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:41:08,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-12-19 06:41:08,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387444114] [2023-12-19 06:41:08,957 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:41:08,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 06:41:08,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:41:08,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 06:41:08,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-12-19 06:41:08,958 INFO L87 Difference]: Start difference. First operand 680 states and 886 transitions. Second operand has 16 states, 15 states have (on average 4.8) internal successors, (72), 16 states have internal predecessors, (72), 4 states have call successors, (66), 3 states have call predecessors, (66), 4 states have return successors, (66), 2 states have call predecessors, (66), 4 states have call successors, (66) [2023-12-19 06:41:10,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:41:10,221 INFO L93 Difference]: Finished difference Result 1252 states and 1656 transitions. [2023-12-19 06:41:10,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 06:41:10,222 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.8) internal successors, (72), 16 states have internal predecessors, (72), 4 states have call successors, (66), 3 states have call predecessors, (66), 4 states have return successors, (66), 2 states have call predecessors, (66), 4 states have call successors, (66) Word has length 202 [2023-12-19 06:41:10,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:41:10,225 INFO L225 Difference]: With dead ends: 1252 [2023-12-19 06:41:10,225 INFO L226 Difference]: Without dead ends: 794 [2023-12-19 06:41:10,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=345, Invalid=915, Unknown=0, NotChecked=0, Total=1260 [2023-12-19 06:41:10,227 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 494 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 537 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 06:41:10,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 570 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 06:41:10,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2023-12-19 06:41:10,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 344. [2023-12-19 06:41:10,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 221 states have (on average 1.1538461538461537) internal successors, (255), 226 states have internal predecessors, (255), 99 states have call successors, (99), 23 states have call predecessors, (99), 23 states have return successors, (99), 94 states have call predecessors, (99), 99 states have call successors, (99) [2023-12-19 06:41:10,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 453 transitions. [2023-12-19 06:41:10,276 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 453 transitions. Word has length 202 [2023-12-19 06:41:10,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:41:10,276 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 453 transitions. [2023-12-19 06:41:10,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.8) internal successors, (72), 16 states have internal predecessors, (72), 4 states have call successors, (66), 3 states have call predecessors, (66), 4 states have return successors, (66), 2 states have call predecessors, (66), 4 states have call successors, (66) [2023-12-19 06:41:10,277 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 453 transitions. [2023-12-19 06:41:10,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-19 06:41:10,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:41:10,278 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:41:10,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 06:41:10,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:41:10,485 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:41:10,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:41:10,485 INFO L85 PathProgramCache]: Analyzing trace with hash 2098199727, now seen corresponding path program 1 times [2023-12-19 06:41:10,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:41:10,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40800381] [2023-12-19 06:41:10,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:41:10,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:41:10,511 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:41:10,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [22032679] [2023-12-19 06:41:10,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:41:10,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:41:10,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:41:10,514 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:41:10,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 06:41:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:41:10,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 06:41:10,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:41:11,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 32 proven. 96 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-12-19 06:41:11,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:41:11,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2016 trivial. 0 not checked. [2023-12-19 06:41:11,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:41:11,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40800381] [2023-12-19 06:41:11,973 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:41:11,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22032679] [2023-12-19 06:41:11,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22032679] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:41:11,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:41:11,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-19 06:41:11,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374962951] [2023-12-19 06:41:11,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:41:11,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 06:41:11,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:41:11,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 06:41:11,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-12-19 06:41:11,975 INFO L87 Difference]: Start difference. First operand 344 states and 453 transitions. Second operand has 18 states, 17 states have (on average 4.352941176470588) internal successors, (74), 18 states have internal predecessors, (74), 4 states have call successors, (66), 3 states have call predecessors, (66), 4 states have return successors, (66), 2 states have call predecessors, (66), 4 states have call successors, (66) [2023-12-19 06:41:12,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:41:12,820 INFO L93 Difference]: Finished difference Result 680 states and 882 transitions. [2023-12-19 06:41:12,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 06:41:12,837 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.352941176470588) internal successors, (74), 18 states have internal predecessors, (74), 4 states have call successors, (66), 3 states have call predecessors, (66), 4 states have return successors, (66), 2 states have call predecessors, (66), 4 states have call successors, (66) Word has length 202 [2023-12-19 06:41:12,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:41:12,838 INFO L225 Difference]: With dead ends: 680 [2023-12-19 06:41:12,838 INFO L226 Difference]: Without dead ends: 419 [2023-12-19 06:41:12,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2023-12-19 06:41:12,840 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 590 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 06:41:12,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 458 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 06:41:12,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-12-19 06:41:12,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 347. [2023-12-19 06:41:12,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 224 states have (on average 1.1473214285714286) internal successors, (257), 229 states have internal predecessors, (257), 99 states have call successors, (99), 23 states have call predecessors, (99), 23 states have return successors, (99), 94 states have call predecessors, (99), 99 states have call successors, (99) [2023-12-19 06:41:12,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 455 transitions. [2023-12-19 06:41:12,915 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 455 transitions. Word has length 202 [2023-12-19 06:41:12,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:41:12,915 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 455 transitions. [2023-12-19 06:41:12,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.352941176470588) internal successors, (74), 18 states have internal predecessors, (74), 4 states have call successors, (66), 3 states have call predecessors, (66), 4 states have return successors, (66), 2 states have call predecessors, (66), 4 states have call successors, (66) [2023-12-19 06:41:12,916 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 455 transitions. [2023-12-19 06:41:12,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-19 06:41:12,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:41:12,917 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:41:12,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 06:41:13,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:41:13,123 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:41:13,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:41:13,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1609961555, now seen corresponding path program 1 times [2023-12-19 06:41:13,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:41:13,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397147877] [2023-12-19 06:41:13,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:41:13,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:41:13,139 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:41:13,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [137385026] [2023-12-19 06:41:13,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:41:13,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:41:13,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:41:13,142 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:41:13,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 06:41:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:41:13,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-19 06:41:13,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:41:19,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 66 proven. 186 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-19 06:41:19,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:41:23,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 06:41:23,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:41:23,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397147877] [2023-12-19 06:41:23,809 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:41:23,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137385026] [2023-12-19 06:41:23,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137385026] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 06:41:23,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:41:23,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 21 [2023-12-19 06:41:23,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814182613] [2023-12-19 06:41:23,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:41:23,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 06:41:23,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:41:23,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 06:41:23,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2023-12-19 06:41:23,811 INFO L87 Difference]: Start difference. First operand 347 states and 455 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 06:41:24,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:41:24,792 INFO L93 Difference]: Finished difference Result 753 states and 964 transitions. [2023-12-19 06:41:24,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 06:41:24,793 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 202 [2023-12-19 06:41:24,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:41:24,795 INFO L225 Difference]: With dead ends: 753 [2023-12-19 06:41:24,795 INFO L226 Difference]: Without dead ends: 527 [2023-12-19 06:41:24,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2023-12-19 06:41:24,796 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 221 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 06:41:24,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 430 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 06:41:24,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2023-12-19 06:41:24,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 371. [2023-12-19 06:41:24,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 248 states have (on average 1.153225806451613) internal successors, (286), 253 states have internal predecessors, (286), 99 states have call successors, (99), 23 states have call predecessors, (99), 23 states have return successors, (99), 94 states have call predecessors, (99), 99 states have call successors, (99) [2023-12-19 06:41:24,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 484 transitions. [2023-12-19 06:41:24,847 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 484 transitions. Word has length 202 [2023-12-19 06:41:24,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:41:24,847 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 484 transitions. [2023-12-19 06:41:24,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 06:41:24,847 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 484 transitions. [2023-12-19 06:41:24,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-19 06:41:24,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:41:24,849 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:41:24,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-19 06:41:25,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 06:41:25,055 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:41:25,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:41:25,056 INFO L85 PathProgramCache]: Analyzing trace with hash -966155279, now seen corresponding path program 1 times [2023-12-19 06:41:25,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:41:25,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054967867] [2023-12-19 06:41:25,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:41:25,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:41:25,071 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:41:25,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1420317190] [2023-12-19 06:41:25,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:41:25,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:41:25,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:41:25,072 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:41:25,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 06:41:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:41:25,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 06:41:25,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:41:25,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 06:41:25,205 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:41:25,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:41:25,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054967867] [2023-12-19 06:41:25,205 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:41:25,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420317190] [2023-12-19 06:41:25,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420317190] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:41:25,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:41:25,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 06:41:25,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968213472] [2023-12-19 06:41:25,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:41:25,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 06:41:25,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:41:25,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 06:41:25,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 06:41:25,207 INFO L87 Difference]: Start difference. First operand 371 states and 484 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 06:41:25,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:41:25,338 INFO L93 Difference]: Finished difference Result 645 states and 839 transitions. [2023-12-19 06:41:25,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 06:41:25,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 202 [2023-12-19 06:41:25,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:41:25,341 INFO L225 Difference]: With dead ends: 645 [2023-12-19 06:41:25,341 INFO L226 Difference]: Without dead ends: 379 [2023-12-19 06:41:25,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 06:41:25,342 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 66 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 06:41:25,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 330 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 06:41:25,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-12-19 06:41:25,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 374. [2023-12-19 06:41:25,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 251 states have (on average 1.1474103585657371) internal successors, (288), 256 states have internal predecessors, (288), 99 states have call successors, (99), 23 states have call predecessors, (99), 23 states have return successors, (99), 94 states have call predecessors, (99), 99 states have call successors, (99) [2023-12-19 06:41:25,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 486 transitions. [2023-12-19 06:41:25,395 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 486 transitions. Word has length 202 [2023-12-19 06:41:25,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:41:25,395 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 486 transitions. [2023-12-19 06:41:25,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 06:41:25,396 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 486 transitions. [2023-12-19 06:41:25,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-19 06:41:25,396 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:41:25,397 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:41:25,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 06:41:25,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:41:25,604 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:41:25,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:41:25,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1351796117, now seen corresponding path program 1 times [2023-12-19 06:41:25,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:41:25,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916018452] [2023-12-19 06:41:25,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:41:25,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:41:25,624 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:41:25,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [585343801] [2023-12-19 06:41:25,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:41:25,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:41:25,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:41:25,625 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:41:25,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 06:41:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:41:25,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-19 06:41:25,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:41:37,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 66 proven. 186 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-19 06:41:37,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:41:42,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 06:41:42,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:41:42,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916018452] [2023-12-19 06:41:42,386 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:41:42,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585343801] [2023-12-19 06:41:42,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585343801] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 06:41:42,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:41:42,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [16] total 23 [2023-12-19 06:41:42,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725487524] [2023-12-19 06:41:42,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:41:42,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 06:41:42,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:41:42,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 06:41:42,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2023-12-19 06:41:42,388 INFO L87 Difference]: Start difference. First operand 374 states and 486 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 06:41:43,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:41:43,584 INFO L93 Difference]: Finished difference Result 677 states and 866 transitions. [2023-12-19 06:41:43,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 06:41:43,585 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 202 [2023-12-19 06:41:43,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:41:43,587 INFO L225 Difference]: With dead ends: 677 [2023-12-19 06:41:43,587 INFO L226 Difference]: Without dead ends: 437 [2023-12-19 06:41:43,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=161, Invalid=595, Unknown=0, NotChecked=0, Total=756 [2023-12-19 06:41:43,588 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 152 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 06:41:43,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 592 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 06:41:43,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2023-12-19 06:41:43,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 373. [2023-12-19 06:41:43,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 250 states have (on average 1.148) internal successors, (287), 255 states have internal predecessors, (287), 99 states have call successors, (99), 23 states have call predecessors, (99), 23 states have return successors, (99), 94 states have call predecessors, (99), 99 states have call successors, (99) [2023-12-19 06:41:43,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 485 transitions. [2023-12-19 06:41:43,644 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 485 transitions. Word has length 202 [2023-12-19 06:41:43,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:41:43,645 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 485 transitions. [2023-12-19 06:41:43,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 06:41:43,645 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 485 transitions. [2023-12-19 06:41:43,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-19 06:41:43,646 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:41:43,646 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:41:43,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 06:41:43,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 06:41:43,853 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:41:43,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:41:43,854 INFO L85 PathProgramCache]: Analyzing trace with hash 2140818634, now seen corresponding path program 1 times [2023-12-19 06:41:43,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:41:43,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286706748] [2023-12-19 06:41:43,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:41:43,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:41:43,881 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:41:43,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872449921] [2023-12-19 06:41:43,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:41:43,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:41:43,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:41:43,890 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:41:43,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 06:41:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:41:44,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 06:41:44,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:41:44,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 06:41:44,020 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:41:44,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:41:44,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286706748] [2023-12-19 06:41:44,020 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:41:44,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872449921] [2023-12-19 06:41:44,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872449921] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:41:44,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:41:44,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 06:41:44,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607594717] [2023-12-19 06:41:44,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:41:44,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 06:41:44,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:41:44,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 06:41:44,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 06:41:44,021 INFO L87 Difference]: Start difference. First operand 373 states and 485 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 06:41:44,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:41:44,118 INFO L93 Difference]: Finished difference Result 613 states and 787 transitions. [2023-12-19 06:41:44,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 06:41:44,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 202 [2023-12-19 06:41:44,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:41:44,121 INFO L225 Difference]: With dead ends: 613 [2023-12-19 06:41:44,121 INFO L226 Difference]: Without dead ends: 368 [2023-12-19 06:41:44,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 06:41:44,122 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 51 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:41:44,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 319 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:41:44,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2023-12-19 06:41:44,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 320. [2023-12-19 06:41:44,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 211 states have (on average 1.1184834123222749) internal successors, (236), 213 states have internal predecessors, (236), 87 states have call successors, (87), 21 states have call predecessors, (87), 21 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-19 06:41:44,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 410 transitions. [2023-12-19 06:41:44,166 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 410 transitions. Word has length 202 [2023-12-19 06:41:44,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:41:44,166 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 410 transitions. [2023-12-19 06:41:44,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 06:41:44,167 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 410 transitions. [2023-12-19 06:41:44,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-19 06:41:44,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:41:44,168 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:41:44,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 06:41:44,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 06:41:44,374 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:41:44,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:41:44,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1690533322, now seen corresponding path program 1 times [2023-12-19 06:41:44,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:41:44,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523090067] [2023-12-19 06:41:44,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:41:44,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:41:44,414 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:41:44,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1948891252] [2023-12-19 06:41:44,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:41:44,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:41:44,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:41:44,415 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:41:44,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 06:41:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:41:44,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-19 06:41:44,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:41:46,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 822 proven. 246 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2023-12-19 06:41:46,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:41:52,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 06:41:52,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:41:52,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523090067] [2023-12-19 06:41:52,577 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:41:52,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948891252] [2023-12-19 06:41:52,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948891252] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 06:41:52,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:41:52,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 26 [2023-12-19 06:41:52,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759167666] [2023-12-19 06:41:52,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:41:52,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 06:41:52,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:41:52,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 06:41:52,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2023-12-19 06:41:52,578 INFO L87 Difference]: Start difference. First operand 320 states and 410 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 06:41:53,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:41:53,675 INFO L93 Difference]: Finished difference Result 520 states and 667 transitions. [2023-12-19 06:41:53,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 06:41:53,676 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 202 [2023-12-19 06:41:53,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:41:53,679 INFO L225 Difference]: With dead ends: 520 [2023-12-19 06:41:53,679 INFO L226 Difference]: Without dead ends: 359 [2023-12-19 06:41:53,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=269, Invalid=921, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 06:41:53,680 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 129 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 06:41:53,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 583 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 06:41:53,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-12-19 06:41:53,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 328. [2023-12-19 06:41:53,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 219 states have (on average 1.1232876712328768) internal successors, (246), 221 states have internal predecessors, (246), 87 states have call successors, (87), 21 states have call predecessors, (87), 21 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-19 06:41:53,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 420 transitions. [2023-12-19 06:41:53,730 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 420 transitions. Word has length 202 [2023-12-19 06:41:53,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:41:53,731 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 420 transitions. [2023-12-19 06:41:53,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 06:41:53,731 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 420 transitions. [2023-12-19 06:41:53,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-19 06:41:53,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:41:53,733 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:41:53,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 06:41:53,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 06:41:53,939 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:41:53,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:41:53,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1903369396, now seen corresponding path program 1 times [2023-12-19 06:41:53,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:41:53,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169345227] [2023-12-19 06:41:53,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:41:53,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:41:53,954 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:41:53,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1446771901] [2023-12-19 06:41:53,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:41:53,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:41:53,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:41:53,955 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:41:53,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 06:41:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:41:54,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-19 06:41:54,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:41:56,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 822 proven. 246 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2023-12-19 06:41:56,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:42:00,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 06:42:00,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:42:00,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169345227] [2023-12-19 06:42:00,266 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:42:00,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446771901] [2023-12-19 06:42:00,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446771901] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 06:42:00,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:42:00,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 26 [2023-12-19 06:42:00,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885785829] [2023-12-19 06:42:00,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:42:00,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 06:42:00,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:42:00,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 06:42:00,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2023-12-19 06:42:00,268 INFO L87 Difference]: Start difference. First operand 328 states and 420 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 06:42:01,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:42:01,313 INFO L93 Difference]: Finished difference Result 528 states and 676 transitions. [2023-12-19 06:42:01,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 06:42:01,314 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 202 [2023-12-19 06:42:01,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:42:01,316 INFO L225 Difference]: With dead ends: 528 [2023-12-19 06:42:01,316 INFO L226 Difference]: Without dead ends: 359 [2023-12-19 06:42:01,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=269, Invalid=921, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 06:42:01,317 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 169 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 06:42:01,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 491 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 06:42:01,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-12-19 06:42:01,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 328. [2023-12-19 06:42:01,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 219 states have (on average 1.1232876712328768) internal successors, (246), 221 states have internal predecessors, (246), 87 states have call successors, (87), 21 states have call predecessors, (87), 21 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-19 06:42:01,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 420 transitions. [2023-12-19 06:42:01,382 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 420 transitions. Word has length 202 [2023-12-19 06:42:01,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:42:01,383 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 420 transitions. [2023-12-19 06:42:01,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 06:42:01,383 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 420 transitions. [2023-12-19 06:42:01,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-19 06:42:01,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:42:01,384 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:42:01,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 06:42:01,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 06:42:01,591 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:42:01,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:42:01,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1556668622, now seen corresponding path program 1 times [2023-12-19 06:42:01,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:42:01,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179612949] [2023-12-19 06:42:01,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:42:01,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:42:01,605 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:42:01,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2120270461] [2023-12-19 06:42:01,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:42:01,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:42:01,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:42:01,606 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:42:01,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 06:42:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:42:01,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 73 conjunts are in the unsatisfiable core [2023-12-19 06:42:01,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:42:20,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 956 proven. 546 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2023-12-19 06:42:20,632 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:42:25,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 06:42:25,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:42:25,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179612949] [2023-12-19 06:42:25,891 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:42:25,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120270461] [2023-12-19 06:42:25,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120270461] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 06:42:25,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:42:25,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [41] total 49 [2023-12-19 06:42:25,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683854094] [2023-12-19 06:42:25,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:42:25,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 06:42:25,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:42:25,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 06:42:25,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=492, Invalid=1860, Unknown=0, NotChecked=0, Total=2352 [2023-12-19 06:42:25,893 INFO L87 Difference]: Start difference. First operand 328 states and 420 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 06:42:26,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:42:26,456 INFO L93 Difference]: Finished difference Result 623 states and 785 transitions. [2023-12-19 06:42:26,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 06:42:26,461 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 203 [2023-12-19 06:42:26,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:42:26,463 INFO L225 Difference]: With dead ends: 623 [2023-12-19 06:42:26,463 INFO L226 Difference]: Without dead ends: 414 [2023-12-19 06:42:26,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=532, Invalid=2224, Unknown=0, NotChecked=0, Total=2756 [2023-12-19 06:42:26,465 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 128 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 06:42:26,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 390 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 06:42:26,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2023-12-19 06:42:26,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 331. [2023-12-19 06:42:26,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 222 states have (on average 1.135135135135135) internal successors, (252), 224 states have internal predecessors, (252), 87 states have call successors, (87), 21 states have call predecessors, (87), 21 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-19 06:42:26,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 426 transitions. [2023-12-19 06:42:26,510 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 426 transitions. Word has length 203 [2023-12-19 06:42:26,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:42:26,510 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 426 transitions. [2023-12-19 06:42:26,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 06:42:26,511 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 426 transitions. [2023-12-19 06:42:26,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-19 06:42:26,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:42:26,512 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:42:26,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-19 06:42:26,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:42:26,718 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:42:26,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:42:26,718 INFO L85 PathProgramCache]: Analyzing trace with hash -2094492398, now seen corresponding path program 1 times [2023-12-19 06:42:26,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:42:26,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170683626] [2023-12-19 06:42:26,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:42:26,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:42:26,751 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:42:26,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1446016315] [2023-12-19 06:42:26,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:42:26,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:42:26,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:42:26,755 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:42:26,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 06:42:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:42:26,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 06:42:26,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:42:27,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 32 proven. 96 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-12-19 06:42:27,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:42:27,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2016 trivial. 0 not checked. [2023-12-19 06:42:27,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:42:27,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170683626] [2023-12-19 06:42:27,497 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:42:27,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446016315] [2023-12-19 06:42:27,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446016315] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:42:27,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:42:27,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2023-12-19 06:42:27,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181365142] [2023-12-19 06:42:27,499 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:42:27,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 06:42:27,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:42:27,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 06:42:27,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-12-19 06:42:27,501 INFO L87 Difference]: Start difference. First operand 331 states and 426 transitions. Second operand has 15 states, 14 states have (on average 5.214285714285714) internal successors, (73), 15 states have internal predecessors, (73), 4 states have call successors, (66), 3 states have call predecessors, (66), 4 states have return successors, (66), 2 states have call predecessors, (66), 4 states have call successors, (66) [2023-12-19 06:42:28,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:42:28,259 INFO L93 Difference]: Finished difference Result 638 states and 803 transitions. [2023-12-19 06:42:28,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-19 06:42:28,260 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.214285714285714) internal successors, (73), 15 states have internal predecessors, (73), 4 states have call successors, (66), 3 states have call predecessors, (66), 4 states have return successors, (66), 2 states have call predecessors, (66), 4 states have call successors, (66) Word has length 203 [2023-12-19 06:42:28,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:42:28,276 INFO L225 Difference]: With dead ends: 638 [2023-12-19 06:42:28,276 INFO L226 Difference]: Without dead ends: 417 [2023-12-19 06:42:28,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 393 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2023-12-19 06:42:28,279 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 462 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 06:42:28,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 479 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 06:42:28,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2023-12-19 06:42:28,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 325. [2023-12-19 06:42:28,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 216 states have (on average 1.1296296296296295) internal successors, (244), 218 states have internal predecessors, (244), 87 states have call successors, (87), 21 states have call predecessors, (87), 21 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-19 06:42:28,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 418 transitions. [2023-12-19 06:42:28,338 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 418 transitions. Word has length 203 [2023-12-19 06:42:28,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:42:28,339 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 418 transitions. [2023-12-19 06:42:28,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.214285714285714) internal successors, (73), 15 states have internal predecessors, (73), 4 states have call successors, (66), 3 states have call predecessors, (66), 4 states have return successors, (66), 2 states have call predecessors, (66), 4 states have call successors, (66) [2023-12-19 06:42:28,339 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 418 transitions. [2023-12-19 06:42:28,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-19 06:42:28,340 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:42:28,340 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:42:28,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 06:42:28,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 06:42:28,547 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:42:28,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:42:28,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1814834060, now seen corresponding path program 1 times [2023-12-19 06:42:28,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:42:28,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588219123] [2023-12-19 06:42:28,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:42:28,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:42:28,571 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:42:28,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1164281135] [2023-12-19 06:42:28,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:42:28,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:42:28,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:42:28,572 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:42:28,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 06:42:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:42:28,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 06:42:28,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:42:34,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 06:42:34,215 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:42:34,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:42:34,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588219123] [2023-12-19 06:42:34,215 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:42:34,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164281135] [2023-12-19 06:42:34,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164281135] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:42:34,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:42:34,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 06:42:34,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533396987] [2023-12-19 06:42:34,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:42:34,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 06:42:34,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:42:34,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 06:42:34,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-19 06:42:34,219 INFO L87 Difference]: Start difference. First operand 325 states and 418 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 06:42:37,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:42:37,705 INFO L93 Difference]: Finished difference Result 644 states and 806 transitions. [2023-12-19 06:42:37,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 06:42:37,705 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 203 [2023-12-19 06:42:37,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:42:37,707 INFO L225 Difference]: With dead ends: 644 [2023-12-19 06:42:37,707 INFO L226 Difference]: Without dead ends: 433 [2023-12-19 06:42:37,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2023-12-19 06:42:37,710 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 148 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 06:42:37,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 500 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 06:42:37,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-12-19 06:42:37,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 313. [2023-12-19 06:42:37,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 204 states have (on average 1.1274509803921569) internal successors, (230), 206 states have internal predecessors, (230), 87 states have call successors, (87), 21 states have call predecessors, (87), 21 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-19 06:42:37,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 404 transitions. [2023-12-19 06:42:37,764 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 404 transitions. Word has length 203 [2023-12-19 06:42:37,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:42:37,765 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 404 transitions. [2023-12-19 06:42:37,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 06:42:37,765 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 404 transitions. [2023-12-19 06:42:37,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-19 06:42:37,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:42:37,766 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:42:37,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 06:42:37,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 06:42:37,972 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:42:37,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:42:37,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1179406544, now seen corresponding path program 1 times [2023-12-19 06:42:37,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:42:37,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266591977] [2023-12-19 06:42:37,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:42:37,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:42:37,989 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:42:37,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1202637232] [2023-12-19 06:42:37,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:42:37,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:42:37,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:42:38,006 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:42:38,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 06:42:38,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:42:38,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-19 06:42:38,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:42:44,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 66 proven. 186 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-19 06:42:44,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:42:48,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 06:42:48,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:42:48,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266591977] [2023-12-19 06:42:48,498 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:42:48,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202637232] [2023-12-19 06:42:48,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202637232] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 06:42:48,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:42:48,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 23 [2023-12-19 06:42:48,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805073975] [2023-12-19 06:42:48,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:42:48,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 06:42:48,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:42:48,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 06:42:48,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-12-19 06:42:48,500 INFO L87 Difference]: Start difference. First operand 313 states and 404 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 06:42:49,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:42:49,532 INFO L93 Difference]: Finished difference Result 547 states and 699 transitions. [2023-12-19 06:42:49,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 06:42:49,533 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 203 [2023-12-19 06:42:49,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:42:49,535 INFO L225 Difference]: With dead ends: 547 [2023-12-19 06:42:49,535 INFO L226 Difference]: Without dead ends: 376 [2023-12-19 06:42:49,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2023-12-19 06:42:49,536 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 147 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 06:42:49,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 714 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 06:42:49,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2023-12-19 06:42:49,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 319. [2023-12-19 06:42:49,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 210 states have (on average 1.1285714285714286) internal successors, (237), 212 states have internal predecessors, (237), 87 states have call successors, (87), 21 states have call predecessors, (87), 21 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-19 06:42:49,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 411 transitions. [2023-12-19 06:42:49,587 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 411 transitions. Word has length 203 [2023-12-19 06:42:49,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:42:49,587 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 411 transitions. [2023-12-19 06:42:49,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 06:42:49,587 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 411 transitions. [2023-12-19 06:42:49,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-19 06:42:49,588 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:42:49,588 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:42:49,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 06:42:49,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 06:42:49,799 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:42:49,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:42:49,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1437571982, now seen corresponding path program 1 times [2023-12-19 06:42:49,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:42:49,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255180853] [2023-12-19 06:42:49,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:42:49,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:42:49,814 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:42:49,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [888750178] [2023-12-19 06:42:49,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:42:49,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:42:49,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:42:49,816 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:42:49,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 06:42:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:42:49,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-19 06:42:49,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:42:56,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 32 proven. 96 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-12-19 06:42:56,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:42:59,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-12-19 06:42:59,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:42:59,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255180853] [2023-12-19 06:42:59,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:42:59,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888750178] [2023-12-19 06:42:59,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888750178] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 06:42:59,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:42:59,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 20 [2023-12-19 06:42:59,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405574082] [2023-12-19 06:42:59,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:42:59,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 06:42:59,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:42:59,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 06:42:59,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2023-12-19 06:42:59,846 INFO L87 Difference]: Start difference. First operand 319 states and 411 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 06:43:00,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:43:00,764 INFO L93 Difference]: Finished difference Result 553 states and 705 transitions. [2023-12-19 06:43:00,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 06:43:00,765 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 203 [2023-12-19 06:43:00,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:43:00,767 INFO L225 Difference]: With dead ends: 553 [2023-12-19 06:43:00,767 INFO L226 Difference]: Without dead ends: 376 [2023-12-19 06:43:00,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=236, Invalid=634, Unknown=0, NotChecked=0, Total=870 [2023-12-19 06:43:00,768 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 138 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 06:43:00,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 561 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 06:43:00,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2023-12-19 06:43:00,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 316. [2023-12-19 06:43:00,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 207 states have (on average 1.1256038647342994) internal successors, (233), 209 states have internal predecessors, (233), 87 states have call successors, (87), 21 states have call predecessors, (87), 21 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-19 06:43:00,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 407 transitions. [2023-12-19 06:43:00,822 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 407 transitions. Word has length 203 [2023-12-19 06:43:00,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:43:00,822 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 407 transitions. [2023-12-19 06:43:00,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-19 06:43:00,823 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 407 transitions. [2023-12-19 06:43:00,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-12-19 06:43:00,832 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:43:00,832 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:43:00,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 06:43:01,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 06:43:01,034 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:43:01,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:43:01,034 INFO L85 PathProgramCache]: Analyzing trace with hash 601389967, now seen corresponding path program 1 times [2023-12-19 06:43:01,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:43:01,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444765550] [2023-12-19 06:43:01,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:43:01,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:43:01,056 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:43:01,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1115090584] [2023-12-19 06:43:01,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:43:01,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:43:01,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:43:01,058 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:43:01,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 06:43:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:43:01,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-19 06:43:01,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:44:05,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 6 proven. 90 refuted. 0 times theorem prover too weak. 2016 trivial. 0 not checked. [2023-12-19 06:44:05,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-19 06:55:21,078 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 06:55:21,085 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 [2023-12-19 06:55:21,085 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 [2023-12-19 06:55:21,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-19 06:55:21,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:55:21,287 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 205 with TraceHistMax 33,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-20-3-5-5-3-3-4-4-5-4-2-1 context. [2023-12-19 06:55:21,292 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] [2023-12-19 06:55:21,294 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 06:55:21,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 06:55:21 BoogieIcfgContainer [2023-12-19 06:55:21,296 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 06:55:21,296 INFO L158 Benchmark]: Toolchain (without parser) took 862962.08ms. Allocated memory was 302.0MB in the beginning and 1.3GB in the end (delta: 1.0GB). Free memory was 250.6MB in the beginning and 612.0MB in the end (delta: -361.4MB). Peak memory consumption was 792.2MB. Max. memory is 8.0GB. [2023-12-19 06:55:21,296 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 179.3MB. Free memory is still 127.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 06:55:21,297 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.19ms. Allocated memory is still 302.0MB. Free memory was 250.6MB in the beginning and 235.4MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-19 06:55:21,298 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.61ms. Allocated memory is still 302.0MB. Free memory was 235.4MB in the beginning and 230.4MB in the end (delta: 5.1MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-19 06:55:21,298 INFO L158 Benchmark]: Boogie Preprocessor took 95.86ms. Allocated memory is still 302.0MB. Free memory was 230.4MB in the beginning and 224.5MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-19 06:55:21,298 INFO L158 Benchmark]: RCFGBuilder took 504.33ms. Allocated memory is still 302.0MB. Free memory was 224.5MB in the beginning and 258.8MB in the end (delta: -34.3MB). Peak memory consumption was 28.0MB. Max. memory is 8.0GB. [2023-12-19 06:55:21,298 INFO L158 Benchmark]: TraceAbstraction took 862014.02ms. Allocated memory was 302.0MB in the beginning and 1.3GB in the end (delta: 1.0GB). Free memory was 258.3MB in the beginning and 612.0MB in the end (delta: -353.7MB). Peak memory consumption was 798.8MB. Max. memory is 8.0GB. [2023-12-19 06:55:21,299 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 179.3MB. Free memory is still 127.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 290.19ms. Allocated memory is still 302.0MB. Free memory was 250.6MB in the beginning and 235.4MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 52.61ms. Allocated memory is still 302.0MB. Free memory was 235.4MB in the beginning and 230.4MB in the end (delta: 5.1MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 95.86ms. Allocated memory is still 302.0MB. Free memory was 230.4MB in the beginning and 224.5MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * RCFGBuilder took 504.33ms. Allocated memory is still 302.0MB. Free memory was 224.5MB in the beginning and 258.8MB in the end (delta: -34.3MB). Peak memory consumption was 28.0MB. Max. memory is 8.0GB. * TraceAbstraction took 862014.02ms. Allocated memory was 302.0MB in the beginning and 1.3GB in the end (delta: 1.0GB). Free memory was 258.3MB in the beginning and 612.0MB in the end (delta: -353.7MB). Peak memory consumption was 798.8MB. 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 NwaCegarLoop was analyzing trace of length 205 with TraceHistMax 33,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-20-3-5-5-3-3-4-4-5-4-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 82 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 862.0s, OverallIterations: 19, TraceHistogramMax: 33, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 17.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5124 SdHoareTripleChecker+Valid, 8.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5014 mSDsluCounter, 8448 SdHoareTripleChecker+Invalid, 7.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6381 mSDsCounter, 1784 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7414 IncrementalHoareTripleChecker+Invalid, 9198 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1784 mSolverCounterUnsat, 2067 mSDtfsCounter, 7414 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6459 GetRequests, 5976 SyntacticMatches, 1 SemanticMatches, 482 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4543 ImplicationChecksByTransitivity, 23.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=680occurred in iteration=5, InterpolantAutomatonStates: 305, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 18 MinimizatonAttempts, 1791 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 96.3s InterpolantComputationTime, 3836 NumberOfCodeBlocks, 3836 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 6232 ConstructedInterpolants, 3 QuantifiedInterpolants, 65561 SizeOfPredicates, 346 NumberOfNonLiveVariables, 8777 ConjunctsInSsa, 350 ConjunctsInUnsatCore, 31 InterpolantComputations, 12 PerfectInterpolantSequences, 62547/65472 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