/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_variablewrapping_wrapper-s_file-58.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:40:57,689 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:40:57,759 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:40:57,763 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:40:57,763 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:40:57,786 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:40:57,787 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:40:57,787 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:40:57,788 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:40:57,791 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:40:57,791 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:40:57,791 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:40:57,792 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:40:57,793 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:40:57,793 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:40:57,793 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:40:57,793 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:40:57,793 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:40:57,793 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:40:57,794 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:40:57,794 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:40:57,795 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:40:57,795 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:40:57,795 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:40:57,795 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:40:57,795 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:40:57,796 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:40:57,796 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:40:57,796 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:40:57,796 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:40:57,797 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:40:57,797 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:40:57,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:40:57,797 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:40:57,797 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:40:57,798 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:40:57,798 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:40:57,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:40:57,798 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:40:57,798 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:40:57,798 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:40:57,798 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:40:57,798 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:40:57,798 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:40:58,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:40:58,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:40:58,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:40:58,035 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:40:58,037 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:40:58,038 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-58.i [2023-12-15 21:40:59,077 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:40:59,231 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:40:59,231 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-58.i [2023-12-15 21:40:59,238 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ae39b46a/efe18b2ae3464f65b3edcfabfa851c30/FLAG95a1e7b19 [2023-12-15 21:40:59,251 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ae39b46a/efe18b2ae3464f65b3edcfabfa851c30 [2023-12-15 21:40:59,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:40:59,253 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:40:59,256 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:40:59,256 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:40:59,259 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:40:59,260 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:40:59" (1/1) ... [2023-12-15 21:40:59,260 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@169d5bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:40:59, skipping insertion in model container [2023-12-15 21:40:59,260 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:40:59" (1/1) ... [2023-12-15 21:40:59,286 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:40:59,395 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_variablewrapping_wrapper-s_file-58.i[916,929] [2023-12-15 21:40:59,437 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:40:59,444 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:40:59,451 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_variablewrapping_wrapper-s_file-58.i[916,929] [2023-12-15 21:40:59,475 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:40:59,487 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:40:59,488 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:40:59 WrapperNode [2023-12-15 21:40:59,488 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:40:59,489 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:40:59,489 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:40:59,489 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:40:59,493 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:40:59" (1/1) ... [2023-12-15 21:40:59,515 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:40:59" (1/1) ... [2023-12-15 21:40:59,566 INFO L138 Inliner]: procedures = 26, calls = 152, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 436 [2023-12-15 21:40:59,566 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:40:59,567 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:40:59,567 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:40:59,567 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:40:59,579 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:40:59" (1/1) ... [2023-12-15 21:40:59,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:40:59" (1/1) ... [2023-12-15 21:40:59,587 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:40:59" (1/1) ... [2023-12-15 21:40:59,620 INFO L175 MemorySlicer]: Split 125 memory accesses to 2 slices as follows [2, 123]. 98 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 11]. The 15 writes are split as follows [0, 15]. [2023-12-15 21:40:59,621 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:40:59" (1/1) ... [2023-12-15 21:40:59,621 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:40:59" (1/1) ... [2023-12-15 21:40:59,634 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:40:59" (1/1) ... [2023-12-15 21:40:59,636 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:40:59" (1/1) ... [2023-12-15 21:40:59,637 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:40:59" (1/1) ... [2023-12-15 21:40:59,639 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:40:59" (1/1) ... [2023-12-15 21:40:59,642 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:40:59,642 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:40:59,642 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:40:59,643 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:40:59,643 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:40:59" (1/1) ... [2023-12-15 21:40:59,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:40:59,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:40:59,711 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 21:40:59,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 21:40:59,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:40:59,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-15 21:40:59,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-15 21:40:59,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-15 21:40:59,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-15 21:40:59,758 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:40:59,759 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:40:59,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:40:59,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-15 21:40:59,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:40:59,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:40:59,854 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:40:59,856 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:41:00,180 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:41:00,201 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:41:00,201 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:41:00,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:41:00 BoogieIcfgContainer [2023-12-15 21:41:00,202 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:41:00,203 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:41:00,203 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:41:00,205 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:41:00,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:40:59" (1/3) ... [2023-12-15 21:41:00,206 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d60d1d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:41:00, skipping insertion in model container [2023-12-15 21:41:00,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:40:59" (2/3) ... [2023-12-15 21:41:00,234 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d60d1d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:41:00, skipping insertion in model container [2023-12-15 21:41:00,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:41:00" (3/3) ... [2023-12-15 21:41:00,236 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-58.i [2023-12-15 21:41:00,247 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:41:00,248 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:41:00,279 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:41:00,285 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;@6b198611, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:41:00,285 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:41:00,289 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 67 states have (on average 1.4328358208955223) internal successors, (96), 68 states have internal predecessors, (96), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-15 21:41:00,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-15 21:41:00,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:41:00,297 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:41:00,298 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:41:00,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:41:00,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1478306038, now seen corresponding path program 1 times [2023-12-15 21:41:00,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:41:00,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113303193] [2023-12-15 21:41:00,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:00,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:41:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:41:00,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:41:00,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113303193] [2023-12-15 21:41:00,483 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 21:41:00,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443063389] [2023-12-15 21:41:00,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:00,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:00,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:41:00,502 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:41:00,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 21:41:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:41:00,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 21:41:00,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:41:00,733 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2023-12-15 21:41:00,733 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:41:00,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443063389] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:41:00,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:41:00,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:41:00,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713740400] [2023-12-15 21:41:00,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:41:00,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:41:00,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:41:00,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:41:00,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:41:00,773 INFO L87 Difference]: Start difference. First operand has 85 states, 67 states have (on average 1.4328358208955223) internal successors, (96), 68 states have internal predecessors, (96), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-15 21:41:00,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:41:00,817 INFO L93 Difference]: Finished difference Result 163 states and 259 transitions. [2023-12-15 21:41:00,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:41:00,819 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 111 [2023-12-15 21:41:00,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:41:00,825 INFO L225 Difference]: With dead ends: 163 [2023-12-15 21:41:00,825 INFO L226 Difference]: Without dead ends: 79 [2023-12-15 21:41:00,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:41:00,832 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:41:00,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:41:00,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-15 21:41:00,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-12-15 21:41:00,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 62 states have (on average 1.3387096774193548) internal successors, (83), 62 states have internal predecessors, (83), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-15 21:41:00,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 113 transitions. [2023-12-15 21:41:00,870 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 113 transitions. Word has length 111 [2023-12-15 21:41:00,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:41:00,870 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 113 transitions. [2023-12-15 21:41:00,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-15 21:41:00,871 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 113 transitions. [2023-12-15 21:41:00,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-15 21:41:00,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:41:00,878 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:41:00,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 21:41:01,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 21:41:01,084 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:41:01,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:41:01,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1541380312, now seen corresponding path program 1 times [2023-12-15 21:41:01,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:41:01,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48471157] [2023-12-15 21:41:01,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:01,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:41:01,141 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:41:01,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [158191938] [2023-12-15 21:41:01,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:01,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:01,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:41:01,147 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:41:01,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 21:41:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:41:01,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:41:01,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:41:01,298 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:41:01,298 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:41:01,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:41:01,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48471157] [2023-12-15 21:41:01,299 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:41:01,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158191938] [2023-12-15 21:41:01,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158191938] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:41:01,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:41:01,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:41:01,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284242464] [2023-12-15 21:41:01,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:41:01,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:41:01,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:41:01,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:41:01,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:41:01,301 INFO L87 Difference]: Start difference. First operand 79 states and 113 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:01,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:41:01,337 INFO L93 Difference]: Finished difference Result 161 states and 230 transitions. [2023-12-15 21:41:01,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:41:01,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 111 [2023-12-15 21:41:01,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:41:01,339 INFO L225 Difference]: With dead ends: 161 [2023-12-15 21:41:01,339 INFO L226 Difference]: Without dead ends: 83 [2023-12-15 21:41:01,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:41:01,340 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 3 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:41:01,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 315 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:41:01,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-15 21:41:01,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2023-12-15 21:41:01,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 64 states have (on average 1.328125) internal successors, (85), 64 states have internal predecessors, (85), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-15 21:41:01,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 115 transitions. [2023-12-15 21:41:01,352 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 115 transitions. Word has length 111 [2023-12-15 21:41:01,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:41:01,355 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 115 transitions. [2023-12-15 21:41:01,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:01,355 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 115 transitions. [2023-12-15 21:41:01,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-15 21:41:01,357 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:41:01,357 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:41:01,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 21:41:01,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 21:41:01,567 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:41:01,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:41:01,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1541320730, now seen corresponding path program 1 times [2023-12-15 21:41:01,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:41:01,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359823900] [2023-12-15 21:41:01,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:01,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:41:01,666 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:41:01,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1382941014] [2023-12-15 21:41:01,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:01,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:01,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:41:01,672 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:41:01,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 21:41:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:41:01,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 21:41:01,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:41:01,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-15 21:41:01,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-15 21:41:01,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-15 21:41:01,983 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:41:01,983 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:41:01,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:41:01,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359823900] [2023-12-15 21:41:01,983 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:41:01,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382941014] [2023-12-15 21:41:01,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382941014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:41:01,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:41:01,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:41:01,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887202004] [2023-12-15 21:41:01,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:41:01,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:41:01,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:41:01,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:41:01,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:41:01,987 INFO L87 Difference]: Start difference. First operand 81 states and 115 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:02,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:41:02,314 INFO L93 Difference]: Finished difference Result 257 states and 365 transitions. [2023-12-15 21:41:02,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:41:02,314 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 111 [2023-12-15 21:41:02,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:41:02,316 INFO L225 Difference]: With dead ends: 257 [2023-12-15 21:41:02,316 INFO L226 Difference]: Without dead ends: 177 [2023-12-15 21:41:02,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:41:02,317 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 149 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:41:02,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 357 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:41:02,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-12-15 21:41:02,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 154. [2023-12-15 21:41:02,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 121 states have (on average 1.3057851239669422) internal successors, (158), 121 states have internal predecessors, (158), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-15 21:41:02,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 218 transitions. [2023-12-15 21:41:02,327 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 218 transitions. Word has length 111 [2023-12-15 21:41:02,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:41:02,328 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 218 transitions. [2023-12-15 21:41:02,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:02,328 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 218 transitions. [2023-12-15 21:41:02,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-15 21:41:02,328 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:41:02,329 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:41:02,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 21:41:02,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:02,535 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:41:02,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:41:02,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1140890851, now seen corresponding path program 1 times [2023-12-15 21:41:02,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:41:02,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412951462] [2023-12-15 21:41:02,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:02,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:41:02,566 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:41:02,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [805076659] [2023-12-15 21:41:02,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:02,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:02,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:41:02,593 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:41:02,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 21:41:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:41:02,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-15 21:41:02,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:41:02,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2023-12-15 21:41:02,770 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:02,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 20 [2023-12-15 21:41:02,805 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:02,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 28 [2023-12-15 21:41:02,820 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-12-15 21:41:02,821 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:41:02,908 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:41:02,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:41:02,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412951462] [2023-12-15 21:41:02,908 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:41:02,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805076659] [2023-12-15 21:41:02,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805076659] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:41:02,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:41:02,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 11 [2023-12-15 21:41:02,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960758158] [2023-12-15 21:41:02,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:41:02,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:41:02,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:41:02,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:41:02,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:41:02,910 INFO L87 Difference]: Start difference. First operand 154 states and 218 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:03,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:41:03,162 INFO L93 Difference]: Finished difference Result 367 states and 518 transitions. [2023-12-15 21:41:03,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 21:41:03,164 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 111 [2023-12-15 21:41:03,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:41:03,165 INFO L225 Difference]: With dead ends: 367 [2023-12-15 21:41:03,165 INFO L226 Difference]: Without dead ends: 214 [2023-12-15 21:41:03,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-12-15 21:41:03,166 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 157 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:41:03,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 370 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:41:03,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-12-15 21:41:03,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 168. [2023-12-15 21:41:03,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 135 states have (on average 1.3111111111111111) internal successors, (177), 135 states have internal predecessors, (177), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-15 21:41:03,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 237 transitions. [2023-12-15 21:41:03,179 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 237 transitions. Word has length 111 [2023-12-15 21:41:03,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:41:03,180 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 237 transitions. [2023-12-15 21:41:03,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:03,180 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 237 transitions. [2023-12-15 21:41:03,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-15 21:41:03,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:41:03,182 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:41:03,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 21:41:03,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:03,387 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:41:03,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:41:03,387 INFO L85 PathProgramCache]: Analyzing trace with hash -439826273, now seen corresponding path program 1 times [2023-12-15 21:41:03,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:41:03,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304472149] [2023-12-15 21:41:03,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:03,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:41:03,411 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:41:03,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [459730890] [2023-12-15 21:41:03,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:03,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:03,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:41:03,412 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:41:03,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 21:41:03,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:41:03,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-15 21:41:03,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:41:03,558 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:03,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 40 [2023-12-15 21:41:03,573 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:03,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 40 [2023-12-15 21:41:03,584 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:03,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 22 [2023-12-15 21:41:03,593 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:41:03,593 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:41:03,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:41:03,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304472149] [2023-12-15 21:41:03,593 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:41:03,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459730890] [2023-12-15 21:41:03,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459730890] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:41:03,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:41:03,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:41:03,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945866314] [2023-12-15 21:41:03,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:41:03,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:41:03,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:41:03,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:41:03,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:41:03,595 INFO L87 Difference]: Start difference. First operand 168 states and 237 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:03,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:41:03,807 INFO L93 Difference]: Finished difference Result 420 states and 586 transitions. [2023-12-15 21:41:03,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 21:41:03,809 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 111 [2023-12-15 21:41:03,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:41:03,810 INFO L225 Difference]: With dead ends: 420 [2023-12-15 21:41:03,810 INFO L226 Difference]: Without dead ends: 253 [2023-12-15 21:41:03,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:41:03,811 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 118 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:41:03,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 288 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:41:03,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-12-15 21:41:03,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 205. [2023-12-15 21:41:03,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 166 states have (on average 1.3012048192771084) internal successors, (216), 168 states have internal predecessors, (216), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-15 21:41:03,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 284 transitions. [2023-12-15 21:41:03,822 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 284 transitions. Word has length 111 [2023-12-15 21:41:03,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:41:03,823 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 284 transitions. [2023-12-15 21:41:03,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:03,823 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 284 transitions. [2023-12-15 21:41:03,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-15 21:41:03,824 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:41:03,824 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:41:03,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 21:41:04,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:04,030 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:41:04,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:41:04,031 INFO L85 PathProgramCache]: Analyzing trace with hash 2133008091, now seen corresponding path program 1 times [2023-12-15 21:41:04,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:41:04,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468394118] [2023-12-15 21:41:04,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:04,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:41:04,049 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:41:04,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [577608679] [2023-12-15 21:41:04,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:04,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:04,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:41:04,051 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:41:04,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 21:41:04,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:41:04,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-15 21:41:04,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:41:04,219 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:04,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 47 [2023-12-15 21:41:04,260 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:04,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 50 [2023-12-15 21:41:04,292 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:04,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 71 treesize of output 25 [2023-12-15 21:41:04,300 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:41:04,300 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:41:04,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:41:04,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468394118] [2023-12-15 21:41:04,301 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:41:04,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577608679] [2023-12-15 21:41:04,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577608679] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:41:04,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:41:04,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:41:04,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336299255] [2023-12-15 21:41:04,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:41:04,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:41:04,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:41:04,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:41:04,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:41:04,302 INFO L87 Difference]: Start difference. First operand 205 states and 284 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:04,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:41:04,699 INFO L93 Difference]: Finished difference Result 430 states and 594 transitions. [2023-12-15 21:41:04,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 21:41:04,700 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 111 [2023-12-15 21:41:04,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:41:04,702 INFO L225 Difference]: With dead ends: 430 [2023-12-15 21:41:04,702 INFO L226 Difference]: Without dead ends: 234 [2023-12-15 21:41:04,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:41:04,703 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 120 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:41:04,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 329 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:41:04,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-12-15 21:41:04,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 180. [2023-12-15 21:41:04,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 143 states have (on average 1.2797202797202798) internal successors, (183), 144 states have internal predecessors, (183), 32 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-15 21:41:04,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 247 transitions. [2023-12-15 21:41:04,728 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 247 transitions. Word has length 111 [2023-12-15 21:41:04,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:41:04,729 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 247 transitions. [2023-12-15 21:41:04,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:04,729 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 247 transitions. [2023-12-15 21:41:04,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-15 21:41:04,730 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:41:04,730 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:41:04,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 21:41:04,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:04,931 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:41:04,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:41:04,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1460894627, now seen corresponding path program 1 times [2023-12-15 21:41:04,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:41:04,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841221102] [2023-12-15 21:41:04,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:04,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:41:04,950 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:41:04,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [628769138] [2023-12-15 21:41:04,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:04,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:04,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:41:04,952 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:41:04,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 21:41:05,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:41:05,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-15 21:41:05,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:41:05,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2023-12-15 21:41:05,118 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:05,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 20 [2023-12-15 21:41:05,136 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:05,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 28 [2023-12-15 21:41:05,156 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-12-15 21:41:05,156 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:41:05,233 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:41:05,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:41:05,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841221102] [2023-12-15 21:41:05,233 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:41:05,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628769138] [2023-12-15 21:41:05,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628769138] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:41:05,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:41:05,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 11 [2023-12-15 21:41:05,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744402751] [2023-12-15 21:41:05,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:41:05,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:41:05,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:41:05,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:41:05,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:41:05,236 INFO L87 Difference]: Start difference. First operand 180 states and 247 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:05,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:41:05,437 INFO L93 Difference]: Finished difference Result 395 states and 540 transitions. [2023-12-15 21:41:05,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:41:05,438 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 111 [2023-12-15 21:41:05,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:41:05,439 INFO L225 Difference]: With dead ends: 395 [2023-12-15 21:41:05,439 INFO L226 Difference]: Without dead ends: 224 [2023-12-15 21:41:05,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-15 21:41:05,440 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 126 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:41:05,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 555 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:41:05,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-12-15 21:41:05,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 221. [2023-12-15 21:41:05,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 176 states have (on average 1.2727272727272727) internal successors, (224), 178 states have internal predecessors, (224), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-15 21:41:05,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 300 transitions. [2023-12-15 21:41:05,450 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 300 transitions. Word has length 111 [2023-12-15 21:41:05,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:41:05,450 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 300 transitions. [2023-12-15 21:41:05,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:05,451 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 300 transitions. [2023-12-15 21:41:05,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-15 21:41:05,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:41:05,451 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:41:05,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 21:41:05,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:05,673 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:41:05,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:41:05,674 INFO L85 PathProgramCache]: Analyzing trace with hash -152508588, now seen corresponding path program 1 times [2023-12-15 21:41:05,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:41:05,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710145797] [2023-12-15 21:41:05,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:05,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:41:05,713 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:41:05,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1929329737] [2023-12-15 21:41:05,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:05,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:05,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:41:05,715 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:41:05,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 21:41:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:41:05,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-15 21:41:05,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:41:05,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2023-12-15 21:41:05,877 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:05,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 22 [2023-12-15 21:41:05,896 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:05,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 14 [2023-12-15 21:41:05,928 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-12-15 21:41:05,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:41:06,052 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:41:06,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:41:06,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710145797] [2023-12-15 21:41:06,052 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:41:06,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929329737] [2023-12-15 21:41:06,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929329737] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:41:06,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:41:06,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2023-12-15 21:41:06,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650650926] [2023-12-15 21:41:06,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:41:06,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:41:06,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:41:06,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:41:06,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-12-15 21:41:06,053 INFO L87 Difference]: Start difference. First operand 221 states and 300 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:06,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:41:06,394 INFO L93 Difference]: Finished difference Result 517 states and 708 transitions. [2023-12-15 21:41:06,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 21:41:06,408 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 112 [2023-12-15 21:41:06,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:41:06,410 INFO L225 Difference]: With dead ends: 517 [2023-12-15 21:41:06,410 INFO L226 Difference]: Without dead ends: 305 [2023-12-15 21:41:06,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2023-12-15 21:41:06,411 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 189 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:41:06,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 492 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:41:06,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-12-15 21:41:06,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 236. [2023-12-15 21:41:06,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 191 states have (on average 1.2827225130890052) internal successors, (245), 193 states have internal predecessors, (245), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-15 21:41:06,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 321 transitions. [2023-12-15 21:41:06,443 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 321 transitions. Word has length 112 [2023-12-15 21:41:06,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:41:06,445 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 321 transitions. [2023-12-15 21:41:06,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:06,445 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 321 transitions. [2023-12-15 21:41:06,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-15 21:41:06,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:41:06,446 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:41:06,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 21:41:06,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 21:41:06,652 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:41:06,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:41:06,652 INFO L85 PathProgramCache]: Analyzing trace with hash 548555990, now seen corresponding path program 1 times [2023-12-15 21:41:06,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:41:06,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917397052] [2023-12-15 21:41:06,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:06,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:41:06,672 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:41:06,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [119184398] [2023-12-15 21:41:06,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:06,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:06,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:41:06,690 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:41:06,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 21:41:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:41:06,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 21:41:06,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:41:06,849 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:06,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 28 [2023-12-15 21:41:06,857 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:06,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2023-12-15 21:41:06,864 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:06,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 16 [2023-12-15 21:41:06,870 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:41:06,870 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:41:06,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:41:06,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917397052] [2023-12-15 21:41:06,870 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:41:06,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119184398] [2023-12-15 21:41:06,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119184398] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:41:06,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:41:06,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:41:06,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646194291] [2023-12-15 21:41:06,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:41:06,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:41:06,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:41:06,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:41:06,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:41:06,872 INFO L87 Difference]: Start difference. First operand 236 states and 321 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:07,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:41:07,178 INFO L93 Difference]: Finished difference Result 532 states and 728 transitions. [2023-12-15 21:41:07,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:41:07,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 112 [2023-12-15 21:41:07,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:41:07,179 INFO L225 Difference]: With dead ends: 532 [2023-12-15 21:41:07,179 INFO L226 Difference]: Without dead ends: 305 [2023-12-15 21:41:07,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:41:07,180 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 113 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:41:07,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 367 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:41:07,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-12-15 21:41:07,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 236. [2023-12-15 21:41:07,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 191 states have (on average 1.2774869109947644) internal successors, (244), 193 states have internal predecessors, (244), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-15 21:41:07,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 320 transitions. [2023-12-15 21:41:07,189 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 320 transitions. Word has length 112 [2023-12-15 21:41:07,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:41:07,189 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 320 transitions. [2023-12-15 21:41:07,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:07,189 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 320 transitions. [2023-12-15 21:41:07,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-15 21:41:07,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:41:07,190 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:41:07,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 21:41:07,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:07,396 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:41:07,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:41:07,396 INFO L85 PathProgramCache]: Analyzing trace with hash 247921291, now seen corresponding path program 1 times [2023-12-15 21:41:07,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:41:07,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568267813] [2023-12-15 21:41:07,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:07,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:41:07,416 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:41:07,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1577201899] [2023-12-15 21:41:07,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:07,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:07,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:41:07,417 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:41:07,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 21:41:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:41:07,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 21:41:07,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:41:07,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-15 21:41:07,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-15 21:41:07,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-15 21:41:07,611 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:41:07,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:41:07,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:41:07,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568267813] [2023-12-15 21:41:07,612 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:41:07,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577201899] [2023-12-15 21:41:07,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577201899] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:41:07,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:41:07,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:41:07,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420448493] [2023-12-15 21:41:07,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:41:07,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:41:07,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:41:07,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:41:07,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:41:07,613 INFO L87 Difference]: Start difference. First operand 236 states and 320 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:07,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:41:07,901 INFO L93 Difference]: Finished difference Result 465 states and 631 transitions. [2023-12-15 21:41:07,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:41:07,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 112 [2023-12-15 21:41:07,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:41:07,903 INFO L225 Difference]: With dead ends: 465 [2023-12-15 21:41:07,903 INFO L226 Difference]: Without dead ends: 238 [2023-12-15 21:41:07,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:41:07,904 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 120 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:41:07,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 256 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:41:07,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-15 21:41:07,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 236. [2023-12-15 21:41:07,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 191 states have (on average 1.2617801047120418) internal successors, (241), 193 states have internal predecessors, (241), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-15 21:41:07,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 317 transitions. [2023-12-15 21:41:07,913 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 317 transitions. Word has length 112 [2023-12-15 21:41:07,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:41:07,913 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 317 transitions. [2023-12-15 21:41:07,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:07,913 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 317 transitions. [2023-12-15 21:41:07,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-15 21:41:07,914 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:41:07,914 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:41:07,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 21:41:08,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 21:41:08,120 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:41:08,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:41:08,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1740856490, now seen corresponding path program 1 times [2023-12-15 21:41:08,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:41:08,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017293623] [2023-12-15 21:41:08,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:08,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:41:08,137 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:41:08,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1641288262] [2023-12-15 21:41:08,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:08,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:08,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:41:08,138 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:41:08,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 21:41:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:41:08,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 21:41:08,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:41:08,289 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:08,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 28 [2023-12-15 21:41:08,297 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:08,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2023-12-15 21:41:08,304 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:08,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 16 [2023-12-15 21:41:08,309 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:41:08,309 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:41:08,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:41:08,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017293623] [2023-12-15 21:41:08,310 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:41:08,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641288262] [2023-12-15 21:41:08,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641288262] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:41:08,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:41:08,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:41:08,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768355044] [2023-12-15 21:41:08,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:41:08,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:41:08,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:41:08,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:41:08,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:41:08,311 INFO L87 Difference]: Start difference. First operand 236 states and 317 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:08,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:41:08,554 INFO L93 Difference]: Finished difference Result 487 states and 656 transitions. [2023-12-15 21:41:08,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:41:08,555 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 112 [2023-12-15 21:41:08,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:41:08,558 INFO L225 Difference]: With dead ends: 487 [2023-12-15 21:41:08,558 INFO L226 Difference]: Without dead ends: 260 [2023-12-15 21:41:08,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:41:08,559 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 74 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:41:08,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 327 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:41:08,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-12-15 21:41:08,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 236. [2023-12-15 21:41:08,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 191 states have (on average 1.256544502617801) internal successors, (240), 193 states have internal predecessors, (240), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-15 21:41:08,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 316 transitions. [2023-12-15 21:41:08,578 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 316 transitions. Word has length 112 [2023-12-15 21:41:08,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:41:08,578 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 316 transitions. [2023-12-15 21:41:08,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:08,578 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 316 transitions. [2023-12-15 21:41:08,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-15 21:41:08,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:41:08,579 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:41:08,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 21:41:08,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 21:41:08,780 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:41:08,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:41:08,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1039791912, now seen corresponding path program 1 times [2023-12-15 21:41:08,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:41:08,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056871055] [2023-12-15 21:41:08,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:08,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:41:08,815 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:41:08,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [671350296] [2023-12-15 21:41:08,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:08,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:08,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:41:08,829 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:41:08,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 21:41:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:41:08,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-15 21:41:08,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:41:08,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2023-12-15 21:41:08,981 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:08,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 24 [2023-12-15 21:41:09,018 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:09,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 18 [2023-12-15 21:41:09,061 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-12-15 21:41:09,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:41:09,190 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:41:09,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:41:09,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056871055] [2023-12-15 21:41:09,190 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:41:09,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671350296] [2023-12-15 21:41:09,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671350296] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:41:09,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:41:09,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2023-12-15 21:41:09,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051100214] [2023-12-15 21:41:09,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:41:09,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:41:09,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:41:09,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:41:09,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-12-15 21:41:09,192 INFO L87 Difference]: Start difference. First operand 236 states and 316 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:09,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:41:09,581 INFO L93 Difference]: Finished difference Result 495 states and 663 transitions. [2023-12-15 21:41:09,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:41:09,581 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 112 [2023-12-15 21:41:09,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:41:09,582 INFO L225 Difference]: With dead ends: 495 [2023-12-15 21:41:09,582 INFO L226 Difference]: Without dead ends: 268 [2023-12-15 21:41:09,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-12-15 21:41:09,583 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 145 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:41:09,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 650 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:41:09,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-12-15 21:41:09,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 257. [2023-12-15 21:41:09,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 212 states have (on average 1.2688679245283019) internal successors, (269), 214 states have internal predecessors, (269), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-15 21:41:09,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 345 transitions. [2023-12-15 21:41:09,593 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 345 transitions. Word has length 112 [2023-12-15 21:41:09,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:41:09,594 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 345 transitions. [2023-12-15 21:41:09,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:09,594 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 345 transitions. [2023-12-15 21:41:09,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-15 21:41:09,595 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:41:09,595 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:41:09,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 21:41:09,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 21:41:09,800 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:41:09,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:41:09,801 INFO L85 PathProgramCache]: Analyzing trace with hash 196830060, now seen corresponding path program 1 times [2023-12-15 21:41:09,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:41:09,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462769606] [2023-12-15 21:41:09,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:09,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:41:09,819 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:41:09,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1497800530] [2023-12-15 21:41:09,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:09,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:09,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:41:09,832 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:41:09,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 21:41:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:41:09,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-15 21:41:09,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:41:09,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-15 21:41:09,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2023-12-15 21:41:10,015 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-12-15 21:41:10,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:41:10,063 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:41:10,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:41:10,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462769606] [2023-12-15 21:41:10,064 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:41:10,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497800530] [2023-12-15 21:41:10,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497800530] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:41:10,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:41:10,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 9 [2023-12-15 21:41:10,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489089233] [2023-12-15 21:41:10,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:41:10,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:41:10,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:41:10,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:41:10,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:41:10,065 INFO L87 Difference]: Start difference. First operand 257 states and 345 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:10,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:41:10,229 INFO L93 Difference]: Finished difference Result 690 states and 917 transitions. [2023-12-15 21:41:10,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:41:10,230 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 113 [2023-12-15 21:41:10,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:41:10,232 INFO L225 Difference]: With dead ends: 690 [2023-12-15 21:41:10,232 INFO L226 Difference]: Without dead ends: 434 [2023-12-15 21:41:10,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-12-15 21:41:10,234 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 102 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:41:10,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 449 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:41:10,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2023-12-15 21:41:10,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 290. [2023-12-15 21:41:10,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 245 states have (on average 1.2448979591836735) internal successors, (305), 247 states have internal predecessors, (305), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-15 21:41:10,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 381 transitions. [2023-12-15 21:41:10,246 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 381 transitions. Word has length 113 [2023-12-15 21:41:10,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:41:10,246 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 381 transitions. [2023-12-15 21:41:10,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:10,246 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 381 transitions. [2023-12-15 21:41:10,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-15 21:41:10,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:41:10,247 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:41:10,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 21:41:10,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 21:41:10,452 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:41:10,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:41:10,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1628554231, now seen corresponding path program 1 times [2023-12-15 21:41:10,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:41:10,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310245394] [2023-12-15 21:41:10,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:10,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:41:10,481 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:41:10,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817309698] [2023-12-15 21:41:10,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:10,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:10,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:41:10,482 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:41:10,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 21:41:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:41:11,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-15 21:41:11,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:41:11,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-15 21:41:11,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-15 21:41:11,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-15 21:41:11,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-15 21:41:11,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-15 21:41:11,122 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:11,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 71 treesize of output 58 [2023-12-15 21:41:11,159 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:11,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 88 treesize of output 34 [2023-12-15 21:41:11,183 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 194 proven. 12 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2023-12-15 21:41:11,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:41:11,296 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:41:11,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:41:11,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310245394] [2023-12-15 21:41:11,297 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:41:11,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817309698] [2023-12-15 21:41:11,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817309698] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:41:11,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:41:11,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-15 21:41:11,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098527836] [2023-12-15 21:41:11,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:41:11,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:41:11,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:41:11,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:41:11,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:41:11,298 INFO L87 Difference]: Start difference. First operand 290 states and 381 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:13,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:41:13,164 INFO L93 Difference]: Finished difference Result 687 states and 900 transitions. [2023-12-15 21:41:13,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:41:13,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 114 [2023-12-15 21:41:13,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:41:13,166 INFO L225 Difference]: With dead ends: 687 [2023-12-15 21:41:13,166 INFO L226 Difference]: Without dead ends: 398 [2023-12-15 21:41:13,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-15 21:41:13,167 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 116 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 21:41:13,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 267 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 21:41:13,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2023-12-15 21:41:13,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 262. [2023-12-15 21:41:13,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 219 states have (on average 1.2191780821917808) internal successors, (267), 220 states have internal predecessors, (267), 36 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-15 21:41:13,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 339 transitions. [2023-12-15 21:41:13,177 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 339 transitions. Word has length 114 [2023-12-15 21:41:13,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:41:13,177 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 339 transitions. [2023-12-15 21:41:13,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:13,177 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 339 transitions. [2023-12-15 21:41:13,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-15 21:41:13,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:41:13,178 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:41:13,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-15 21:41:13,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:13,385 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:41:13,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:41:13,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1455107949, now seen corresponding path program 1 times [2023-12-15 21:41:13,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:41:13,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254836796] [2023-12-15 21:41:13,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:13,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:41:13,399 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:41:13,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [59465561] [2023-12-15 21:41:13,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:13,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:13,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:41:13,401 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:41:13,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 21:41:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:41:13,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-15 21:41:13,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:41:13,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2023-12-15 21:41:13,562 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:13,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 22 [2023-12-15 21:41:13,568 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:13,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 22 [2023-12-15 21:41:13,590 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:13,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 25 [2023-12-15 21:41:13,601 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-12-15 21:41:13,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:41:13,679 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:41:13,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:41:13,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254836796] [2023-12-15 21:41:13,679 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:41:13,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59465561] [2023-12-15 21:41:13,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59465561] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:41:13,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:41:13,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-12-15 21:41:13,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515186406] [2023-12-15 21:41:13,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:41:13,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:41:13,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:41:13,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:41:13,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:41:13,681 INFO L87 Difference]: Start difference. First operand 262 states and 339 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:13,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:41:13,886 INFO L93 Difference]: Finished difference Result 295 states and 377 transitions. [2023-12-15 21:41:13,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:41:13,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 115 [2023-12-15 21:41:13,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:41:13,888 INFO L225 Difference]: With dead ends: 295 [2023-12-15 21:41:13,888 INFO L226 Difference]: Without dead ends: 293 [2023-12-15 21:41:13,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:41:13,889 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 59 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:41:13,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 279 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:41:13,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-12-15 21:41:13,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 239. [2023-12-15 21:41:13,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 195 states have (on average 1.2) internal successors, (234), 196 states have internal predecessors, (234), 36 states have call successors, (36), 7 states have call predecessors, (36), 7 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-15 21:41:13,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 306 transitions. [2023-12-15 21:41:13,901 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 306 transitions. Word has length 115 [2023-12-15 21:41:13,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:41:13,902 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 306 transitions. [2023-12-15 21:41:13,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:13,902 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 306 transitions. [2023-12-15 21:41:13,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-15 21:41:13,902 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:41:13,903 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:41:13,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-15 21:41:14,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 21:41:14,107 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:41:14,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:41:14,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1455048367, now seen corresponding path program 1 times [2023-12-15 21:41:14,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:41:14,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860356784] [2023-12-15 21:41:14,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:14,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:41:14,137 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:41:14,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [362458786] [2023-12-15 21:41:14,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:14,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:14,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:41:14,154 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:41:14,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-15 21:41:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:41:14,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-15 21:41:14,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:41:14,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-15 21:41:14,479 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:14,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2023-12-15 21:41:14,489 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:14,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 35 [2023-12-15 21:41:14,498 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:14,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 42 [2023-12-15 21:41:14,517 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:14,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 45 [2023-12-15 21:41:14,611 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:14,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 47 [2023-12-15 21:41:14,637 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-12-15 21:41:14,637 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:41:14,820 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:41:14,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:41:14,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860356784] [2023-12-15 21:41:14,820 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:41:14,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362458786] [2023-12-15 21:41:14,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362458786] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:41:14,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:41:14,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 18 [2023-12-15 21:41:14,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4930778] [2023-12-15 21:41:14,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:41:14,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 21:41:14,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:41:14,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 21:41:14,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-12-15 21:41:14,822 INFO L87 Difference]: Start difference. First operand 239 states and 306 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:15,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:41:15,421 INFO L93 Difference]: Finished difference Result 599 states and 765 transitions. [2023-12-15 21:41:15,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 21:41:15,422 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 115 [2023-12-15 21:41:15,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:41:15,423 INFO L225 Difference]: With dead ends: 599 [2023-12-15 21:41:15,423 INFO L226 Difference]: Without dead ends: 377 [2023-12-15 21:41:15,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2023-12-15 21:41:15,424 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 250 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 21:41:15,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 467 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 21:41:15,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-12-15 21:41:15,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 351. [2023-12-15 21:41:15,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 307 states have (on average 1.231270358306189) internal successors, (378), 308 states have internal predecessors, (378), 36 states have call successors, (36), 7 states have call predecessors, (36), 7 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-15 21:41:15,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 450 transitions. [2023-12-15 21:41:15,437 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 450 transitions. Word has length 115 [2023-12-15 21:41:15,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:41:15,438 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 450 transitions. [2023-12-15 21:41:15,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:15,438 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 450 transitions. [2023-12-15 21:41:15,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-15 21:41:15,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:41:15,439 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:41:15,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-15 21:41:15,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-15 21:41:15,645 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:41:15,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:41:15,645 INFO L85 PathProgramCache]: Analyzing trace with hash -2146415715, now seen corresponding path program 1 times [2023-12-15 21:41:15,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:41:15,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069072697] [2023-12-15 21:41:15,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:15,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:41:15,659 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:41:15,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1668491113] [2023-12-15 21:41:15,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:15,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:15,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:41:15,679 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:41:15,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-15 21:41:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:41:47,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-15 21:41:47,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:41:47,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-15 21:41:47,342 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:47,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 52 [2023-12-15 21:41:47,505 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:47,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 28 [2023-12-15 21:41:47,671 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:41:47,671 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:41:47,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:41:47,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069072697] [2023-12-15 21:41:47,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:41:47,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668491113] [2023-12-15 21:41:47,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668491113] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:41:47,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:41:47,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:41:47,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813435798] [2023-12-15 21:41:47,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:41:47,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:41:47,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:41:47,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:41:47,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:41:47,672 INFO L87 Difference]: Start difference. First operand 351 states and 450 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:49,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:41:49,405 INFO L93 Difference]: Finished difference Result 731 states and 933 transitions. [2023-12-15 21:41:49,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:41:49,406 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 116 [2023-12-15 21:41:49,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:41:49,407 INFO L225 Difference]: With dead ends: 731 [2023-12-15 21:41:49,407 INFO L226 Difference]: Without dead ends: 397 [2023-12-15 21:41:49,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:41:49,408 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 39 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 21:41:49,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 313 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 21:41:49,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2023-12-15 21:41:49,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 351. [2023-12-15 21:41:49,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 307 states have (on average 1.218241042345277) internal successors, (374), 308 states have internal predecessors, (374), 36 states have call successors, (36), 7 states have call predecessors, (36), 7 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-15 21:41:49,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 446 transitions. [2023-12-15 21:41:49,422 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 446 transitions. Word has length 116 [2023-12-15 21:41:49,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:41:49,422 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 446 transitions. [2023-12-15 21:41:49,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:49,422 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 446 transitions. [2023-12-15 21:41:49,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-15 21:41:49,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:41:49,423 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:41:49,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-15 21:41:49,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-15 21:41:49,636 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:41:49,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:41:49,636 INFO L85 PathProgramCache]: Analyzing trace with hash -2032703546, now seen corresponding path program 1 times [2023-12-15 21:41:49,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:41:49,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104093895] [2023-12-15 21:41:49,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:49,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:41:49,655 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:41:49,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1937811816] [2023-12-15 21:41:49,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:49,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:49,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:41:49,657 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:41:49,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-15 21:41:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:41:49,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 21:41:49,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:41:49,845 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:49,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-12-15 21:41:49,865 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:49,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 26 [2023-12-15 21:41:49,871 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:49,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-12-15 21:41:49,887 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:49,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 14 [2023-12-15 21:41:49,893 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:41:49,893 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:41:49,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:41:49,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104093895] [2023-12-15 21:41:49,893 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:41:49,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937811816] [2023-12-15 21:41:49,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937811816] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:41:49,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:41:49,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:41:49,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744140127] [2023-12-15 21:41:49,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:41:49,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:41:49,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:41:49,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:41:49,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:41:49,895 INFO L87 Difference]: Start difference. First operand 351 states and 446 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:50,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:41:50,288 INFO L93 Difference]: Finished difference Result 711 states and 895 transitions. [2023-12-15 21:41:50,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:41:50,289 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 116 [2023-12-15 21:41:50,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:41:50,291 INFO L225 Difference]: With dead ends: 711 [2023-12-15 21:41:50,291 INFO L226 Difference]: Without dead ends: 377 [2023-12-15 21:41:50,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:41:50,292 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 45 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:41:50,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 372 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:41:50,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-12-15 21:41:50,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 345. [2023-12-15 21:41:50,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 301 states have (on average 1.2093023255813953) internal successors, (364), 302 states have internal predecessors, (364), 36 states have call successors, (36), 7 states have call predecessors, (36), 7 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-15 21:41:50,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 436 transitions. [2023-12-15 21:41:50,306 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 436 transitions. Word has length 116 [2023-12-15 21:41:50,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:41:50,307 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 436 transitions. [2023-12-15 21:41:50,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:50,307 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 436 transitions. [2023-12-15 21:41:50,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-15 21:41:50,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:41:50,309 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:41:50,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-15 21:41:50,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-15 21:41:50,515 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:41:50,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:41:50,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1323113266, now seen corresponding path program 1 times [2023-12-15 21:41:50,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:41:50,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486524633] [2023-12-15 21:41:50,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:50,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:41:50,535 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:41:50,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1158301315] [2023-12-15 21:41:50,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:50,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:50,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:41:50,536 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:41:50,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-15 21:41:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:41:50,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-15 21:41:50,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:41:50,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-15 21:41:50,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2023-12-15 21:41:50,794 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-12-15 21:41:50,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:41:50,870 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:41:50,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:41:50,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486524633] [2023-12-15 21:41:50,871 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:41:50,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158301315] [2023-12-15 21:41:50,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158301315] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:41:50,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:41:50,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 11 [2023-12-15 21:41:50,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709695615] [2023-12-15 21:41:50,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:41:50,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:41:50,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:41:50,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:41:50,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:41:50,873 INFO L87 Difference]: Start difference. First operand 345 states and 436 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:51,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:41:51,187 INFO L93 Difference]: Finished difference Result 853 states and 1067 transitions. [2023-12-15 21:41:51,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 21:41:51,187 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 117 [2023-12-15 21:41:51,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:41:51,189 INFO L225 Difference]: With dead ends: 853 [2023-12-15 21:41:51,189 INFO L226 Difference]: Without dead ends: 525 [2023-12-15 21:41:51,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-15 21:41:51,190 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 113 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:41:51,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 635 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:41:51,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2023-12-15 21:41:51,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 397. [2023-12-15 21:41:51,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 353 states have (on average 1.2011331444759208) internal successors, (424), 354 states have internal predecessors, (424), 36 states have call successors, (36), 7 states have call predecessors, (36), 7 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-15 21:41:51,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 496 transitions. [2023-12-15 21:41:51,202 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 496 transitions. Word has length 117 [2023-12-15 21:41:51,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:41:51,202 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 496 transitions. [2023-12-15 21:41:51,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:51,203 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 496 transitions. [2023-12-15 21:41:51,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-15 21:41:51,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:41:51,203 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:41:51,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-15 21:41:51,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:51,404 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:41:51,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:41:51,404 INFO L85 PathProgramCache]: Analyzing trace with hash 424005832, now seen corresponding path program 1 times [2023-12-15 21:41:51,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:41:51,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290452213] [2023-12-15 21:41:51,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:51,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:41:51,421 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:41:51,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1857997035] [2023-12-15 21:41:51,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:51,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:51,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:41:51,422 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:41:51,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-15 21:41:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:41:51,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:41:51,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:41:51,619 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:41:51,619 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:41:51,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:41:51,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290452213] [2023-12-15 21:41:51,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:41:51,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857997035] [2023-12-15 21:41:51,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857997035] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:41:51,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:41:51,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:41:51,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424391431] [2023-12-15 21:41:51,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:41:51,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:41:51,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:41:51,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:41:51,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:41:51,620 INFO L87 Difference]: Start difference. First operand 397 states and 496 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:51,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:41:51,663 INFO L93 Difference]: Finished difference Result 831 states and 1038 transitions. [2023-12-15 21:41:51,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:41:51,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 122 [2023-12-15 21:41:51,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:41:51,665 INFO L225 Difference]: With dead ends: 831 [2023-12-15 21:41:51,665 INFO L226 Difference]: Without dead ends: 451 [2023-12-15 21:41:51,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:41:51,667 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 12 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:41:51,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 219 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:41:51,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2023-12-15 21:41:51,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 405. [2023-12-15 21:41:51,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 361 states have (on average 1.1966759002770082) internal successors, (432), 362 states have internal predecessors, (432), 36 states have call successors, (36), 7 states have call predecessors, (36), 7 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-15 21:41:51,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 504 transitions. [2023-12-15 21:41:51,684 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 504 transitions. Word has length 122 [2023-12-15 21:41:51,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:41:51,684 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 504 transitions. [2023-12-15 21:41:51,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:51,684 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 504 transitions. [2023-12-15 21:41:51,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-15 21:41:51,685 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:41:51,686 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:41:51,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-15 21:41:51,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:51,893 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:41:51,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:41:51,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1445074186, now seen corresponding path program 1 times [2023-12-15 21:41:51,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:41:51,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479472099] [2023-12-15 21:41:51,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:51,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:41:51,921 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:41:51,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [464904676] [2023-12-15 21:41:51,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:51,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:51,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:41:51,937 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:41:51,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-15 21:41:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:41:52,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-15 21:41:52,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:41:52,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2023-12-15 21:41:52,228 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:52,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 95 treesize of output 70 [2023-12-15 21:41:52,417 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:52,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 84 treesize of output 38 [2023-12-15 21:41:52,427 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-12-15 21:41:52,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:41:52,656 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:41:52,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:41:52,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479472099] [2023-12-15 21:41:52,657 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:41:52,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464904676] [2023-12-15 21:41:52,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464904676] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:41:52,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:41:52,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 21 [2023-12-15 21:41:52,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384018768] [2023-12-15 21:41:52,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:41:52,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 21:41:52,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:41:52,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 21:41:52,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2023-12-15 21:41:52,658 INFO L87 Difference]: Start difference. First operand 405 states and 504 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:53,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:41:53,191 INFO L93 Difference]: Finished difference Result 946 states and 1167 transitions. [2023-12-15 21:41:53,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 21:41:53,204 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 122 [2023-12-15 21:41:53,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:41:53,206 INFO L225 Difference]: With dead ends: 946 [2023-12-15 21:41:53,206 INFO L226 Difference]: Without dead ends: 558 [2023-12-15 21:41:53,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2023-12-15 21:41:53,208 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 268 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:41:53,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 406 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:41:53,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2023-12-15 21:41:53,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 415. [2023-12-15 21:41:53,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 371 states have (on average 1.196765498652291) internal successors, (444), 372 states have internal predecessors, (444), 36 states have call successors, (36), 7 states have call predecessors, (36), 7 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-15 21:41:53,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 516 transitions. [2023-12-15 21:41:53,223 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 516 transitions. Word has length 122 [2023-12-15 21:41:53,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:41:53,223 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 516 transitions. [2023-12-15 21:41:53,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:53,223 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 516 transitions. [2023-12-15 21:41:53,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-15 21:41:53,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:41:53,224 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:41:53,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-15 21:41:53,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:53,430 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:41:53,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:41:53,430 INFO L85 PathProgramCache]: Analyzing trace with hash -630653566, now seen corresponding path program 1 times [2023-12-15 21:41:53,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:41:53,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869910674] [2023-12-15 21:41:53,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:53,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:41:53,447 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:41:53,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1348146427] [2023-12-15 21:41:53,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:53,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:53,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:41:53,466 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:41:53,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-15 21:41:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:41:53,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 21:41:53,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:41:53,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2023-12-15 21:41:53,657 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:41:53,657 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:41:53,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:41:53,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869910674] [2023-12-15 21:41:53,657 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:41:53,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348146427] [2023-12-15 21:41:53,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348146427] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:41:53,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:41:53,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:41:53,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944973215] [2023-12-15 21:41:53,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:41:53,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:41:53,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:41:53,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:41:53,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:41:53,658 INFO L87 Difference]: Start difference. First operand 415 states and 516 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:53,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:41:53,930 INFO L93 Difference]: Finished difference Result 987 states and 1223 transitions. [2023-12-15 21:41:53,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:41:53,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 122 [2023-12-15 21:41:53,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:41:53,933 INFO L225 Difference]: With dead ends: 987 [2023-12-15 21:41:53,933 INFO L226 Difference]: Without dead ends: 589 [2023-12-15 21:41:53,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:41:53,934 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 83 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:41:53,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 326 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:41:53,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2023-12-15 21:41:53,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 539. [2023-12-15 21:41:53,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 467 states have (on average 1.1820128479657388) internal successors, (552), 470 states have internal predecessors, (552), 58 states have call successors, (58), 13 states have call predecessors, (58), 13 states have return successors, (58), 55 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-15 21:41:53,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 668 transitions. [2023-12-15 21:41:53,952 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 668 transitions. Word has length 122 [2023-12-15 21:41:53,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:41:53,952 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 668 transitions. [2023-12-15 21:41:53,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:53,952 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 668 transitions. [2023-12-15 21:41:53,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-15 21:41:53,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:41:53,953 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:41:53,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-15 21:41:54,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:54,159 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:41:54,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:41:54,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1331718144, now seen corresponding path program 1 times [2023-12-15 21:41:54,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:41:54,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962301834] [2023-12-15 21:41:54,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:54,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:41:54,176 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:41:54,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [328751881] [2023-12-15 21:41:54,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:54,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:54,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:41:54,206 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:41:54,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-15 21:41:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:41:54,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-15 21:41:54,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:41:54,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2023-12-15 21:41:54,650 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:54,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 34 [2023-12-15 21:41:54,731 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:54,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 30 [2023-12-15 21:41:54,740 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:41:54,740 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:41:54,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:41:54,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962301834] [2023-12-15 21:41:54,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:41:54,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328751881] [2023-12-15 21:41:54,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328751881] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:41:54,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:41:54,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 21:41:54,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800768212] [2023-12-15 21:41:54,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:41:54,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 21:41:54,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:41:54,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 21:41:54,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:41:54,742 INFO L87 Difference]: Start difference. First operand 539 states and 668 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:55,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:41:55,255 INFO L93 Difference]: Finished difference Result 1179 states and 1450 transitions. [2023-12-15 21:41:55,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 21:41:55,256 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 122 [2023-12-15 21:41:55,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:41:55,257 INFO L225 Difference]: With dead ends: 1179 [2023-12-15 21:41:55,258 INFO L226 Difference]: Without dead ends: 657 [2023-12-15 21:41:55,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-12-15 21:41:55,259 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 114 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:41:55,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 458 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:41:55,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2023-12-15 21:41:55,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 551. [2023-12-15 21:41:55,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 479 states have (on average 1.1774530271398747) internal successors, (564), 482 states have internal predecessors, (564), 58 states have call successors, (58), 13 states have call predecessors, (58), 13 states have return successors, (58), 55 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-15 21:41:55,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 680 transitions. [2023-12-15 21:41:55,297 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 680 transitions. Word has length 122 [2023-12-15 21:41:55,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:41:55,297 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 680 transitions. [2023-12-15 21:41:55,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:55,298 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 680 transitions. [2023-12-15 21:41:55,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-15 21:41:55,298 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:41:55,298 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:41:55,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-15 21:41:55,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:55,506 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:41:55,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:41:55,506 INFO L85 PathProgramCache]: Analyzing trace with hash -503963250, now seen corresponding path program 1 times [2023-12-15 21:41:55,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:41:55,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031114371] [2023-12-15 21:41:55,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:55,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:41:55,522 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:41:55,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1142725236] [2023-12-15 21:41:55,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:55,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:55,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:41:55,542 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:41:55,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-15 21:41:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:41:55,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 21:41:55,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:41:55,770 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:55,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 60 [2023-12-15 21:41:55,834 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:55,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 35 [2023-12-15 21:41:55,841 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:41:55,842 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:41:55,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:41:55,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031114371] [2023-12-15 21:41:55,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:41:55,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142725236] [2023-12-15 21:41:55,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142725236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:41:55,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:41:55,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 21:41:55,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738093804] [2023-12-15 21:41:55,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:41:55,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:41:55,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:41:55,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:41:55,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:41:55,844 INFO L87 Difference]: Start difference. First operand 551 states and 680 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:56,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:41:56,194 INFO L93 Difference]: Finished difference Result 1135 states and 1384 transitions. [2023-12-15 21:41:56,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 21:41:56,195 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 122 [2023-12-15 21:41:56,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:41:56,197 INFO L225 Difference]: With dead ends: 1135 [2023-12-15 21:41:56,197 INFO L226 Difference]: Without dead ends: 601 [2023-12-15 21:41:56,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:41:56,198 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 69 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:41:56,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 381 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:41:56,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2023-12-15 21:41:56,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 493. [2023-12-15 21:41:56,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 421 states have (on average 1.154394299287411) internal successors, (486), 424 states have internal predecessors, (486), 58 states have call successors, (58), 13 states have call predecessors, (58), 13 states have return successors, (58), 55 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-15 21:41:56,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 602 transitions. [2023-12-15 21:41:56,217 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 602 transitions. Word has length 122 [2023-12-15 21:41:56,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:41:56,217 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 602 transitions. [2023-12-15 21:41:56,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:56,217 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 602 transitions. [2023-12-15 21:41:56,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-15 21:41:56,218 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:41:56,218 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:41:56,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-15 21:41:56,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:56,424 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:41:56,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:41:56,425 INFO L85 PathProgramCache]: Analyzing trace with hash -429558464, now seen corresponding path program 1 times [2023-12-15 21:41:56,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:41:56,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688722115] [2023-12-15 21:41:56,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:56,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:41:56,441 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:41:56,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1168881958] [2023-12-15 21:41:56,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:56,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:56,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:41:56,450 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:41:56,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-15 21:41:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:41:56,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 21:41:56,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:41:56,719 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:56,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 24 [2023-12-15 21:41:56,736 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:56,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 27 [2023-12-15 21:41:56,742 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:41:56,742 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:41:56,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:41:56,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688722115] [2023-12-15 21:41:56,742 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:41:56,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168881958] [2023-12-15 21:41:56,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168881958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:41:56,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:41:56,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:41:56,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674908879] [2023-12-15 21:41:56,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:41:56,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:41:56,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:41:56,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:41:56,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:41:56,743 INFO L87 Difference]: Start difference. First operand 493 states and 602 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:56,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:41:56,997 INFO L93 Difference]: Finished difference Result 969 states and 1182 transitions. [2023-12-15 21:41:57,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:41:57,008 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 122 [2023-12-15 21:41:57,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:41:57,010 INFO L225 Difference]: With dead ends: 969 [2023-12-15 21:41:57,010 INFO L226 Difference]: Without dead ends: 493 [2023-12-15 21:41:57,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:41:57,011 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 58 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:41:57,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 299 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:41:57,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2023-12-15 21:41:57,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 481. [2023-12-15 21:41:57,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 409 states have (on average 1.1491442542787287) internal successors, (470), 412 states have internal predecessors, (470), 58 states have call successors, (58), 13 states have call predecessors, (58), 13 states have return successors, (58), 55 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-15 21:41:57,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 586 transitions. [2023-12-15 21:41:57,036 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 586 transitions. Word has length 122 [2023-12-15 21:41:57,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:41:57,036 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 586 transitions. [2023-12-15 21:41:57,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:41:57,037 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 586 transitions. [2023-12-15 21:41:57,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-15 21:41:57,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:41:57,038 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:41:57,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-15 21:41:57,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-15 21:41:57,244 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:41:57,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:41:57,244 INFO L85 PathProgramCache]: Analyzing trace with hash 2033657018, now seen corresponding path program 1 times [2023-12-15 21:41:57,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:41:57,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507002170] [2023-12-15 21:41:57,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:57,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:41:57,259 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:41:57,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [496006754] [2023-12-15 21:41:57,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:41:57,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:41:57,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:41:57,272 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:41:57,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-15 21:41:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:41:58,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-15 21:41:58,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:41:58,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-15 21:41:58,310 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:58,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 72 [2023-12-15 21:41:58,477 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:41:58,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 129 treesize of output 51 [2023-12-15 21:41:58,582 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-12-15 21:41:58,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:41:58,892 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:41:58,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:41:58,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507002170] [2023-12-15 21:41:58,892 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:41:58,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496006754] [2023-12-15 21:41:58,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496006754] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:41:58,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:41:58,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 21 [2023-12-15 21:41:58,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313244110] [2023-12-15 21:41:58,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:41:58,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 21:41:58,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:41:58,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 21:41:58,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2023-12-15 21:41:58,894 INFO L87 Difference]: Start difference. First operand 481 states and 586 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:42:00,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:42:00,272 INFO L93 Difference]: Finished difference Result 1125 states and 1353 transitions. [2023-12-15 21:42:00,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 21:42:00,273 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 127 [2023-12-15 21:42:00,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:42:00,274 INFO L225 Difference]: With dead ends: 1125 [2023-12-15 21:42:00,275 INFO L226 Difference]: Without dead ends: 661 [2023-12-15 21:42:00,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 232 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=149, Invalid=843, Unknown=0, NotChecked=0, Total=992 [2023-12-15 21:42:00,276 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 150 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 21:42:00,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 1031 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 21:42:00,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2023-12-15 21:42:00,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 581. [2023-12-15 21:42:00,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 509 states have (on average 1.1355599214145382) internal successors, (578), 512 states have internal predecessors, (578), 58 states have call successors, (58), 13 states have call predecessors, (58), 13 states have return successors, (58), 55 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-15 21:42:00,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 694 transitions. [2023-12-15 21:42:00,301 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 694 transitions. Word has length 127 [2023-12-15 21:42:00,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:42:00,301 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 694 transitions. [2023-12-15 21:42:00,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:42:00,301 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 694 transitions. [2023-12-15 21:42:00,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-15 21:42:00,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:42:00,302 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:42:00,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-15 21:42:00,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-15 21:42:00,510 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:42:00,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:42:00,510 INFO L85 PathProgramCache]: Analyzing trace with hash -2003144840, now seen corresponding path program 1 times [2023-12-15 21:42:00,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:42:00,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661151354] [2023-12-15 21:42:00,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:42:00,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:42:00,532 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:42:00,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1914559082] [2023-12-15 21:42:00,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:42:00,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:42:00,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:42:00,552 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:42:00,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-15 21:42:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:42:00,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:42:00,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:42:00,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-15 21:42:00,772 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:42:00,773 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:42:00,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:42:00,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661151354] [2023-12-15 21:42:00,773 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:42:00,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914559082] [2023-12-15 21:42:00,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914559082] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:42:00,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:42:00,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:42:00,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517743791] [2023-12-15 21:42:00,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:42:00,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:42:00,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:42:00,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:42:00,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:42:00,774 INFO L87 Difference]: Start difference. First operand 581 states and 694 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:42:01,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:42:01,149 INFO L93 Difference]: Finished difference Result 1147 states and 1367 transitions. [2023-12-15 21:42:01,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:42:01,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 127 [2023-12-15 21:42:01,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:42:01,151 INFO L225 Difference]: With dead ends: 1147 [2023-12-15 21:42:01,151 INFO L226 Difference]: Without dead ends: 583 [2023-12-15 21:42:01,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:42:01,152 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 152 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:42:01,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 347 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:42:01,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2023-12-15 21:42:01,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 581. [2023-12-15 21:42:01,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 509 states have (on average 1.1277013752455796) internal successors, (574), 512 states have internal predecessors, (574), 58 states have call successors, (58), 13 states have call predecessors, (58), 13 states have return successors, (58), 55 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-15 21:42:01,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 690 transitions. [2023-12-15 21:42:01,173 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 690 transitions. Word has length 127 [2023-12-15 21:42:01,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:42:01,173 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 690 transitions. [2023-12-15 21:42:01,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:42:01,173 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 690 transitions. [2023-12-15 21:42:01,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-15 21:42:01,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:42:01,174 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:42:01,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-15 21:42:01,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-15 21:42:01,380 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:42:01,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:42:01,381 INFO L85 PathProgramCache]: Analyzing trace with hash 2095696632, now seen corresponding path program 1 times [2023-12-15 21:42:01,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:42:01,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932581560] [2023-12-15 21:42:01,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:42:01,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:42:01,393 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:42:01,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1316424980] [2023-12-15 21:42:01,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:42:01,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:42:01,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:42:01,394 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:42:01,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-15 21:42:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:42:01,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 21:42:01,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:42:01,594 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:42:01,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 16 [2023-12-15 21:42:01,601 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:42:01,601 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:42:01,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:42:01,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932581560] [2023-12-15 21:42:01,602 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:42:01,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316424980] [2023-12-15 21:42:01,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316424980] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:42:01,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:42:01,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:42:01,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131355540] [2023-12-15 21:42:01,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:42:01,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:42:01,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:42:01,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:42:01,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:42:01,603 INFO L87 Difference]: Start difference. First operand 581 states and 690 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:42:01,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:42:01,884 INFO L93 Difference]: Finished difference Result 1297 states and 1528 transitions. [2023-12-15 21:42:01,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:42:01,886 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 127 [2023-12-15 21:42:01,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:42:01,889 INFO L225 Difference]: With dead ends: 1297 [2023-12-15 21:42:01,889 INFO L226 Difference]: Without dead ends: 733 [2023-12-15 21:42:01,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:42:01,890 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 53 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:42:01,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 341 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:42:01,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2023-12-15 21:42:01,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 597. [2023-12-15 21:42:01,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 525 states have (on average 1.1238095238095238) internal successors, (590), 528 states have internal predecessors, (590), 58 states have call successors, (58), 13 states have call predecessors, (58), 13 states have return successors, (58), 55 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-15 21:42:01,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 706 transitions. [2023-12-15 21:42:01,916 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 706 transitions. Word has length 127 [2023-12-15 21:42:01,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:42:01,916 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 706 transitions. [2023-12-15 21:42:01,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:42:01,916 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 706 transitions. [2023-12-15 21:42:01,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-15 21:42:01,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:42:01,918 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:42:01,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-15 21:42:02,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-15 21:42:02,124 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:42:02,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:42:02,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1586223542, now seen corresponding path program 1 times [2023-12-15 21:42:02,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:42:02,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860628621] [2023-12-15 21:42:02,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:42:02,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:42:02,138 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:42:02,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2137939401] [2023-12-15 21:42:02,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:42:02,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:42:02,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:42:02,139 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:42:02,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-15 21:42:02,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:42:02,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 21:42:02,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:42:02,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-15 21:42:02,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-15 21:42:02,343 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:42:02,343 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:42:02,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:42:02,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860628621] [2023-12-15 21:42:02,344 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:42:02,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137939401] [2023-12-15 21:42:02,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137939401] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:42:02,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:42:02,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:42:02,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903048908] [2023-12-15 21:42:02,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:42:02,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:42:02,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:42:02,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:42:02,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:42:02,345 INFO L87 Difference]: Start difference. First operand 597 states and 706 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:42:02,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:42:02,675 INFO L93 Difference]: Finished difference Result 1359 states and 1603 transitions. [2023-12-15 21:42:02,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:42:02,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 127 [2023-12-15 21:42:02,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:42:02,677 INFO L225 Difference]: With dead ends: 1359 [2023-12-15 21:42:02,677 INFO L226 Difference]: Without dead ends: 739 [2023-12-15 21:42:02,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:42:02,679 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 123 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:42:02,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 286 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:42:02,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2023-12-15 21:42:02,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 737. [2023-12-15 21:42:02,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 633 states have (on average 1.1090047393364928) internal successors, (702), 637 states have internal predecessors, (702), 84 states have call successors, (84), 19 states have call predecessors, (84), 19 states have return successors, (84), 80 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-15 21:42:02,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 870 transitions. [2023-12-15 21:42:02,708 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 870 transitions. Word has length 127 [2023-12-15 21:42:02,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:42:02,708 INFO L495 AbstractCegarLoop]: Abstraction has 737 states and 870 transitions. [2023-12-15 21:42:02,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:42:02,708 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 870 transitions. [2023-12-15 21:42:02,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-15 21:42:02,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:42:02,713 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:42:02,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-15 21:42:02,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-15 21:42:02,919 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:42:02,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:42:02,920 INFO L85 PathProgramCache]: Analyzing trace with hash -141774737, now seen corresponding path program 1 times [2023-12-15 21:42:02,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:42:02,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75437315] [2023-12-15 21:42:02,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:42:02,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:42:02,934 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:42:02,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1189218954] [2023-12-15 21:42:02,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:42:02,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:42:02,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:42:02,936 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:42:02,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-15 21:42:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:42:03,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 21:42:03,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:42:03,161 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:42:03,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 16 [2023-12-15 21:42:03,167 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:42:03,167 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:42:03,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:42:03,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75437315] [2023-12-15 21:42:03,167 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:42:03,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189218954] [2023-12-15 21:42:03,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189218954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:42:03,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:42:03,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:42:03,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356663773] [2023-12-15 21:42:03,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:42:03,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:42:03,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:42:03,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:42:03,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:42:03,168 INFO L87 Difference]: Start difference. First operand 737 states and 870 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:42:03,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:42:03,441 INFO L93 Difference]: Finished difference Result 1581 states and 1857 transitions. [2023-12-15 21:42:03,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:42:03,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 128 [2023-12-15 21:42:03,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:42:03,445 INFO L225 Difference]: With dead ends: 1581 [2023-12-15 21:42:03,445 INFO L226 Difference]: Without dead ends: 861 [2023-12-15 21:42:03,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:42:03,446 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 87 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:42:03,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 343 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:42:03,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-12-15 21:42:03,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 749. [2023-12-15 21:42:03,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 645 states have (on average 1.1069767441860465) internal successors, (714), 649 states have internal predecessors, (714), 84 states have call successors, (84), 19 states have call predecessors, (84), 19 states have return successors, (84), 80 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-15 21:42:03,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 882 transitions. [2023-12-15 21:42:03,484 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 882 transitions. Word has length 128 [2023-12-15 21:42:03,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:42:03,484 INFO L495 AbstractCegarLoop]: Abstraction has 749 states and 882 transitions. [2023-12-15 21:42:03,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:42:03,484 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 882 transitions. [2023-12-15 21:42:03,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-15 21:42:03,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:42:03,485 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:42:03,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-15 21:42:03,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:42:03,691 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:42:03,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:42:03,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1152891987, now seen corresponding path program 1 times [2023-12-15 21:42:03,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:42:03,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312204525] [2023-12-15 21:42:03,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:42:03,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:42:03,707 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:42:03,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487466865] [2023-12-15 21:42:03,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:42:03,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:42:03,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:42:03,708 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:42:03,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-15 21:42:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:42:03,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-15 21:42:03,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:42:03,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-15 21:42:03,929 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:42:03,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2023-12-15 21:42:03,948 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:42:03,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 16 [2023-12-15 21:42:03,955 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:42:03,955 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:42:03,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:42:03,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312204525] [2023-12-15 21:42:03,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:42:03,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487466865] [2023-12-15 21:42:03,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487466865] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:42:03,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:42:03,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:42:03,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287921445] [2023-12-15 21:42:03,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:42:03,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:42:03,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:42:03,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:42:03,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:42:03,957 INFO L87 Difference]: Start difference. First operand 749 states and 882 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:42:04,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:42:04,198 INFO L93 Difference]: Finished difference Result 1487 states and 1745 transitions. [2023-12-15 21:42:04,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:42:04,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 128 [2023-12-15 21:42:04,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:42:04,200 INFO L225 Difference]: With dead ends: 1487 [2023-12-15 21:42:04,200 INFO L226 Difference]: Without dead ends: 755 [2023-12-15 21:42:04,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:42:04,201 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 55 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:42:04,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 342 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:42:04,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2023-12-15 21:42:04,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 725. [2023-12-15 21:42:04,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 621 states have (on average 1.0901771336553945) internal successors, (677), 625 states have internal predecessors, (677), 84 states have call successors, (84), 19 states have call predecessors, (84), 19 states have return successors, (84), 80 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-15 21:42:04,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 845 transitions. [2023-12-15 21:42:04,236 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 845 transitions. Word has length 128 [2023-12-15 21:42:04,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:42:04,236 INFO L495 AbstractCegarLoop]: Abstraction has 725 states and 845 transitions. [2023-12-15 21:42:04,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:42:04,237 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 845 transitions. [2023-12-15 21:42:04,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-15 21:42:04,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:42:04,237 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:42:04,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-15 21:42:04,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:42:04,444 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:42:04,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:42:04,445 INFO L85 PathProgramCache]: Analyzing trace with hash -847373651, now seen corresponding path program 1 times [2023-12-15 21:42:04,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:42:04,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720577747] [2023-12-15 21:42:04,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:42:04,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:42:04,468 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:42:04,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1418815435] [2023-12-15 21:42:04,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:42:04,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:42:04,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:42:04,470 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:42:04,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-15 21:42:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:42:04,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-15 21:42:04,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:42:04,704 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:42:04,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-12-15 21:42:04,722 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:42:04,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 14 [2023-12-15 21:42:04,729 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:42:04,729 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:42:04,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:42:04,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720577747] [2023-12-15 21:42:04,729 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:42:04,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418815435] [2023-12-15 21:42:04,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418815435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:42:04,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:42:04,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:42:04,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558113150] [2023-12-15 21:42:04,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:42:04,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:42:04,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:42:04,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:42:04,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:42:04,733 INFO L87 Difference]: Start difference. First operand 725 states and 845 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:42:04,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:42:04,959 INFO L93 Difference]: Finished difference Result 1438 states and 1674 transitions. [2023-12-15 21:42:04,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:42:04,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 128 [2023-12-15 21:42:04,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:42:04,962 INFO L225 Difference]: With dead ends: 1438 [2023-12-15 21:42:04,962 INFO L226 Difference]: Without dead ends: 730 [2023-12-15 21:42:04,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:42:04,965 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 44 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:42:04,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 332 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:42:04,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2023-12-15 21:42:04,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 721. [2023-12-15 21:42:04,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 617 states have (on average 1.087520259319287) internal successors, (671), 621 states have internal predecessors, (671), 84 states have call successors, (84), 19 states have call predecessors, (84), 19 states have return successors, (84), 80 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-15 21:42:04,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 839 transitions. [2023-12-15 21:42:04,995 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 839 transitions. Word has length 128 [2023-12-15 21:42:04,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:42:04,995 INFO L495 AbstractCegarLoop]: Abstraction has 721 states and 839 transitions. [2023-12-15 21:42:04,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:42:04,995 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 839 transitions. [2023-12-15 21:42:04,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-15 21:42:04,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:42:04,997 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:42:05,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-12-15 21:42:05,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:42:05,203 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:42:05,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:42:05,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1858490901, now seen corresponding path program 1 times [2023-12-15 21:42:05,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:42:05,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095329933] [2023-12-15 21:42:05,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:42:05,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:42:05,217 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:42:05,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [679100252] [2023-12-15 21:42:05,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:42:05,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:42:05,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:42:05,234 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:42:05,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-15 21:42:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:42:05,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 21:42:05,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:42:05,459 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:42:05,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 14 [2023-12-15 21:42:05,465 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:42:05,465 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:42:05,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:42:05,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095329933] [2023-12-15 21:42:05,465 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:42:05,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679100252] [2023-12-15 21:42:05,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679100252] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:42:05,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:42:05,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:42:05,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443628607] [2023-12-15 21:42:05,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:42:05,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:42:05,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:42:05,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:42:05,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:42:05,466 INFO L87 Difference]: Start difference. First operand 721 states and 839 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:42:05,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:42:05,619 INFO L93 Difference]: Finished difference Result 1434 states and 1666 transitions. [2023-12-15 21:42:05,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:42:05,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 128 [2023-12-15 21:42:05,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:42:05,621 INFO L225 Difference]: With dead ends: 1434 [2023-12-15 21:42:05,621 INFO L226 Difference]: Without dead ends: 730 [2023-12-15 21:42:05,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:42:05,623 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 53 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:42:05,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 332 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:42:05,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2023-12-15 21:42:05,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 721. [2023-12-15 21:42:05,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 617 states have (on average 1.0842787682333874) internal successors, (669), 621 states have internal predecessors, (669), 84 states have call successors, (84), 19 states have call predecessors, (84), 19 states have return successors, (84), 80 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-15 21:42:05,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 837 transitions. [2023-12-15 21:42:05,654 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 837 transitions. Word has length 128 [2023-12-15 21:42:05,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:42:05,654 INFO L495 AbstractCegarLoop]: Abstraction has 721 states and 837 transitions. [2023-12-15 21:42:05,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:42:05,654 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 837 transitions. [2023-12-15 21:42:05,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-15 21:42:05,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:42:05,655 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:42:05,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-12-15 21:42:05,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-15 21:42:05,861 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:42:05,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:42:05,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1600325463, now seen corresponding path program 1 times [2023-12-15 21:42:05,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:42:05,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189678885] [2023-12-15 21:42:05,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:42:05,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:42:05,878 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:42:05,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [565250532] [2023-12-15 21:42:05,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:42:05,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:42:05,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:42:05,894 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:42:05,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-15 21:42:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:42:10,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 112 conjunts are in the unsatisfiable core [2023-12-15 21:42:10,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:42:10,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-15 21:42:10,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-15 21:42:10,558 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:42:10,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2023-12-15 21:42:10,609 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:42:10,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2023-12-15 21:42:10,663 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:42:10,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2023-12-15 21:42:10,801 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:42:10,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 36 [2023-12-15 21:42:10,862 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:42:10,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 36 [2023-12-15 21:42:10,981 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:42:10,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 41 [2023-12-15 21:42:11,015 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:42:11,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 41 [2023-12-15 21:42:11,074 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:42:11,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 50 [2023-12-15 21:42:11,311 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:42:11,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 66 [2023-12-15 21:42:11,672 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:42:11,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 97 treesize of output 45 [2023-12-15 21:42:11,875 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 190 proven. 111 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-12-15 21:42:11,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:42:12,372 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:42:12,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:42:12,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189678885] [2023-12-15 21:42:12,373 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:42:12,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565250532] [2023-12-15 21:42:12,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565250532] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:42:12,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:42:12,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [30] total 41 [2023-12-15 21:42:12,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935125413] [2023-12-15 21:42:12,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:42:12,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-15 21:42:12,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:42:12,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-15 21:42:12,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1456, Unknown=0, NotChecked=0, Total=1640 [2023-12-15 21:42:12,374 INFO L87 Difference]: Start difference. First operand 721 states and 837 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Received shutdown request... [2023-12-15 21:42:12,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:42:12,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=190, Invalid=1532, Unknown=0, NotChecked=0, Total=1722 [2023-12-15 21:42:12,446 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:42:12,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 204 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:42:12,447 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:42:12,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-12-15 21:42:12,472 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:42:12,475 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:42:12,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:42:12,649 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (721states) and FLOYD_HOARE automaton (currently 3 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (20 states constructed, input type IntersectNwa). [2023-12-15 21:42:12,652 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:42:12,654 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:42:12,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:42:12 BoogieIcfgContainer [2023-12-15 21:42:12,656 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:42:12,656 INFO L158 Benchmark]: Toolchain (without parser) took 73402.78ms. Allocated memory was 240.1MB in the beginning and 316.7MB in the end (delta: 76.5MB). Free memory was 196.7MB in the beginning and 132.6MB in the end (delta: 64.0MB). Peak memory consumption was 142.0MB. Max. memory is 8.0GB. [2023-12-15 21:42:12,656 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 197.1MB. Free memory is still 147.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:42:12,656 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.63ms. Allocated memory is still 240.1MB. Free memory was 196.2MB in the beginning and 180.1MB in the end (delta: 16.1MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-15 21:42:12,656 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.49ms. Allocated memory is still 240.1MB. Free memory was 180.1MB in the beginning and 175.6MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-15 21:42:12,656 INFO L158 Benchmark]: Boogie Preprocessor took 75.20ms. Allocated memory is still 240.1MB. Free memory was 175.6MB in the beginning and 170.3MB in the end (delta: 5.3MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 21:42:12,656 INFO L158 Benchmark]: RCFGBuilder took 559.41ms. Allocated memory is still 240.1MB. Free memory was 170.3MB in the beginning and 138.5MB in the end (delta: 31.8MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2023-12-15 21:42:12,656 INFO L158 Benchmark]: TraceAbstraction took 72452.52ms. Allocated memory was 240.1MB in the beginning and 316.7MB in the end (delta: 76.5MB). Free memory was 137.8MB in the beginning and 132.6MB in the end (delta: 5.2MB). Peak memory consumption was 83.3MB. Max. memory is 8.0GB. [2023-12-15 21:42:12,662 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 197.1MB. Free memory is still 147.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 232.63ms. Allocated memory is still 240.1MB. Free memory was 196.2MB in the beginning and 180.1MB in the end (delta: 16.1MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 77.49ms. Allocated memory is still 240.1MB. Free memory was 180.1MB in the beginning and 175.6MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 75.20ms. Allocated memory is still 240.1MB. Free memory was 175.6MB in the beginning and 170.3MB in the end (delta: 5.3MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 559.41ms. Allocated memory is still 240.1MB. Free memory was 170.3MB in the beginning and 138.5MB in the end (delta: 31.8MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * TraceAbstraction took 72452.52ms. Allocated memory was 240.1MB in the beginning and 316.7MB in the end (delta: 76.5MB). Free memory was 137.8MB in the beginning and 132.6MB in the end (delta: 5.2MB). Peak memory consumption was 83.3MB. 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 constructing difference of abstraction (721states) and FLOYD_HOARE automaton (currently 3 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (20 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 72.4s, OverallIterations: 34, TraceHistogramMax: 15, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 13.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3359 SdHoareTripleChecker+Valid, 11.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3359 mSDsluCounter, 12844 SdHoareTripleChecker+Invalid, 10.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9261 mSDsCounter, 225 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7810 IncrementalHoareTripleChecker+Invalid, 8035 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 225 mSolverCounterUnsat, 3583 mSDtfsCounter, 7810 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5469 GetRequests, 5135 SyntacticMatches, 2 SemanticMatches, 332 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 976 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=749occurred in iteration=30, InterpolantAutomatonStates: 247, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 33 MinimizatonAttempts, 1762 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 39.3s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 4134 NumberOfCodeBlocks, 4134 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 5374 ConstructedInterpolants, 0 QuantifiedInterpolants, 20904 SizeOfPredicates, 293 NumberOfNonLiveVariables, 12178 ConjunctsInSsa, 757 ConjunctsInUnsatCore, 46 InterpolantComputations, 34 PerfectInterpolantSequences, 18777/19320 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