/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-27.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 02:22:29,506 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 02:22:29,581 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 02:22:29,585 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 02:22:29,585 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 02:22:29,607 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 02:22:29,607 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 02:22:29,607 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 02:22:29,608 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 02:22:29,611 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 02:22:29,611 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 02:22:29,612 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 02:22:29,612 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 02:22:29,613 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 02:22:29,613 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 02:22:29,613 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 02:22:29,613 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 02:22:29,613 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 02:22:29,614 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 02:22:29,615 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 02:22:29,615 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 02:22:29,626 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 02:22:29,626 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 02:22:29,626 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 02:22:29,626 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 02:22:29,626 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 02:22:29,627 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 02:22:29,627 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 02:22:29,627 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 02:22:29,627 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 02:22:29,627 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 02:22:29,627 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 02:22:29,628 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 02:22:29,628 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 02:22:29,628 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 02:22:29,628 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 02:22:29,629 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 02:22:29,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 02:22:29,629 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 02:22:29,629 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 02:22:29,630 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 02:22:29,630 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 02:22:29,630 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 02:22:29,630 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 02:22:29,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 02:22:29,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 02:22:29,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 02:22:29,838 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 02:22:29,838 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 02:22:29,839 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-27.i [2023-12-21 02:22:30,959 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 02:22:31,113 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 02:22:31,113 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-27.i [2023-12-21 02:22:31,119 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eab2ae4fb/3140ce0f7080465d8fb661975bad7f2d/FLAG3c31fe7b8 [2023-12-21 02:22:31,130 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eab2ae4fb/3140ce0f7080465d8fb661975bad7f2d [2023-12-21 02:22:31,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 02:22:31,132 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 02:22:31,133 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 02:22:31,133 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 02:22:31,136 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 02:22:31,137 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:22:31" (1/1) ... [2023-12-21 02:22:31,138 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ff9b441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:22:31, skipping insertion in model container [2023-12-21 02:22:31,138 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:22:31" (1/1) ... [2023-12-21 02:22:31,156 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 02:22:31,244 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-27.i[916,929] [2023-12-21 02:22:31,287 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 02:22:31,303 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 02:22:31,311 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-27.i[916,929] [2023-12-21 02:22:31,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 02:22:31,354 INFO L206 MainTranslator]: Completed translation [2023-12-21 02:22:31,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:22:31 WrapperNode [2023-12-21 02:22:31,355 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 02:22:31,357 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 02:22:31,357 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 02:22:31,357 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 02:22:31,362 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:22:31" (1/1) ... [2023-12-21 02:22:31,380 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:22:31" (1/1) ... [2023-12-21 02:22:31,422 INFO L138 Inliner]: procedures = 26, calls = 152, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 427 [2023-12-21 02:22:31,423 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 02:22:31,423 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 02:22:31,423 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 02:22:31,424 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 02:22:31,433 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:22:31" (1/1) ... [2023-12-21 02:22:31,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:22:31" (1/1) ... [2023-12-21 02:22:31,437 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:22:31" (1/1) ... [2023-12-21 02:22:31,454 INFO L175 MemorySlicer]: Split 123 memory accesses to 2 slices as follows [2, 121]. 98 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 12]. The 16 writes are split as follows [0, 16]. [2023-12-21 02:22:31,454 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:22:31" (1/1) ... [2023-12-21 02:22:31,454 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:22:31" (1/1) ... [2023-12-21 02:22:31,466 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:22:31" (1/1) ... [2023-12-21 02:22:31,469 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:22:31" (1/1) ... [2023-12-21 02:22:31,470 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:22:31" (1/1) ... [2023-12-21 02:22:31,471 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:22:31" (1/1) ... [2023-12-21 02:22:31,474 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 02:22:31,475 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 02:22:31,475 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 02:22:31,475 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 02:22:31,476 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:22:31" (1/1) ... [2023-12-21 02:22:31,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 02:22:31,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:22:31,519 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) [2023-12-21 02:22:31,537 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 [2023-12-21 02:22:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 02:22:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-21 02:22:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-21 02:22:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-21 02:22:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-21 02:22:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 02:22:31,543 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 02:22:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 02:22:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 02:22:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 02:22:31,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 02:22:31,628 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 02:22:31,630 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 02:22:31,923 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 02:22:31,971 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 02:22:31,972 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 02:22:31,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:22:31 BoogieIcfgContainer [2023-12-21 02:22:31,979 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 02:22:32,010 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 02:22:32,020 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 02:22:32,022 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 02:22:32,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:22:31" (1/3) ... [2023-12-21 02:22:32,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4e7688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:22:32, skipping insertion in model container [2023-12-21 02:22:32,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:22:31" (2/3) ... [2023-12-21 02:22:32,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4e7688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:22:32, skipping insertion in model container [2023-12-21 02:22:32,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:22:31" (3/3) ... [2023-12-21 02:22:32,032 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-27.i [2023-12-21 02:22:32,044 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 02:22:32,045 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 02:22:32,093 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 02:22:32,098 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;@19979adf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 02:22:32,098 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 02:22:32,102 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 67 states have (on average 1.4179104477611941) internal successors, (95), 68 states have internal predecessors, (95), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-21 02:22:32,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-21 02:22:32,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:22:32,116 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:22:32,116 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:22:32,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:22:32,121 INFO L85 PathProgramCache]: Analyzing trace with hash -719955901, now seen corresponding path program 1 times [2023-12-21 02:22:32,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:22:32,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118620071] [2023-12-21 02:22:32,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:32,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:22:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:32,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:22:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:32,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:22:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:32,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:22:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:32,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:22:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:32,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:22:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:32,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:22:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:32,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:22:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:32,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:22:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:32,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:22:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:32,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:22:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:32,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:22:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:32,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:22:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:32,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:22:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:32,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:22:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:32,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:22:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:32,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:22:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:32,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:22:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:32,411 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:22:32,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:22:32,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118620071] [2023-12-21 02:22:32,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118620071] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:22:32,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:22:32,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 02:22:32,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707555147] [2023-12-21 02:22:32,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:22:32,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 02:22:32,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:22:32,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 02:22:32,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 02:22:32,442 INFO L87 Difference]: Start difference. First operand has 87 states, 67 states have (on average 1.4179104477611941) internal successors, (95), 68 states have internal predecessors, (95), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:22:32,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:22:32,487 INFO L93 Difference]: Finished difference Result 171 states and 273 transitions. [2023-12-21 02:22:32,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 02:22:32,489 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 126 [2023-12-21 02:22:32,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:22:32,495 INFO L225 Difference]: With dead ends: 171 [2023-12-21 02:22:32,496 INFO L226 Difference]: Without dead ends: 85 [2023-12-21 02:22:32,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 02:22:32,502 INFO L413 NwaCegarLoop]: 120 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, 120 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 [2023-12-21 02:22:32,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 02:22:32,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-12-21 02:22:32,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-12-21 02:22:32,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 66 states have (on average 1.3636363636363635) internal successors, (90), 66 states have internal predecessors, (90), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-21 02:22:32,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 124 transitions. [2023-12-21 02:22:32,532 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 124 transitions. Word has length 126 [2023-12-21 02:22:32,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:22:32,533 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 124 transitions. [2023-12-21 02:22:32,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:22:32,533 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 124 transitions. [2023-12-21 02:22:32,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-21 02:22:32,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:22:32,535 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:22:32,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 02:22:32,536 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:22:32,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:22:32,536 INFO L85 PathProgramCache]: Analyzing trace with hash -953029023, now seen corresponding path program 1 times [2023-12-21 02:22:32,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:22:32,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458654061] [2023-12-21 02:22:32,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:32,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:22:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:33,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:22:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:33,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:22:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:33,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:22:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:33,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:22:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:33,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:22:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:33,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:22:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:33,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:22:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:33,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:22:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:33,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:22:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:33,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:22:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:33,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:22:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:33,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:22:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:33,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:22:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:33,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:22:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:33,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:22:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:33,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:22:33,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:33,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:22:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:33,525 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:22:33,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:22:33,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458654061] [2023-12-21 02:22:33,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458654061] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:22:33,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:22:33,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 02:22:33,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169318903] [2023-12-21 02:22:33,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:22:33,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 02:22:33,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:22:33,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 02:22:33,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 02:22:33,533 INFO L87 Difference]: Start difference. First operand 85 states and 124 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:33,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:22:33,808 INFO L93 Difference]: Finished difference Result 253 states and 370 transitions. [2023-12-21 02:22:33,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 02:22:33,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 126 [2023-12-21 02:22:33,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:22:33,821 INFO L225 Difference]: With dead ends: 253 [2023-12-21 02:22:33,821 INFO L226 Difference]: Without dead ends: 169 [2023-12-21 02:22:33,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:22:33,824 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 88 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:22:33,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 287 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:22:33,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-12-21 02:22:33,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 165. [2023-12-21 02:22:33,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 128 states have (on average 1.359375) internal successors, (174), 128 states have internal predecessors, (174), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 02:22:33,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 242 transitions. [2023-12-21 02:22:33,857 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 242 transitions. Word has length 126 [2023-12-21 02:22:33,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:22:33,858 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 242 transitions. [2023-12-21 02:22:33,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:33,858 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 242 transitions. [2023-12-21 02:22:33,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-21 02:22:33,861 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:22:33,862 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:22:33,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 02:22:33,862 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:22:33,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:22:33,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1041115683, now seen corresponding path program 1 times [2023-12-21 02:22:33,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:22:33,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017995902] [2023-12-21 02:22:33,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:33,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:22:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:34,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:22:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:34,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:22:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:34,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:22:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:34,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:22:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:34,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:22:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:34,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:22:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:34,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:22:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:34,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:22:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:34,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:22:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:34,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:22:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:34,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:22:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:34,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:22:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:34,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:22:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:34,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:22:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:34,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:22:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:34,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:22:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:34,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:22:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:34,549 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:22:34,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:22:34,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017995902] [2023-12-21 02:22:34,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017995902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:22:34,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:22:34,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 02:22:34,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453913023] [2023-12-21 02:22:34,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:22:34,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 02:22:34,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:22:34,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 02:22:34,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 02:22:34,554 INFO L87 Difference]: Start difference. First operand 165 states and 242 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:22:34,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:22:34,839 INFO L93 Difference]: Finished difference Result 455 states and 666 transitions. [2023-12-21 02:22:34,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:22:34,840 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 126 [2023-12-21 02:22:34,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:22:34,841 INFO L225 Difference]: With dead ends: 455 [2023-12-21 02:22:34,841 INFO L226 Difference]: Without dead ends: 291 [2023-12-21 02:22:34,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:22:34,843 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 76 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:22:34,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 472 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:22:34,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-12-21 02:22:34,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 287. [2023-12-21 02:22:34,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 232 states have (on average 1.3793103448275863) internal successors, (320), 234 states have internal predecessors, (320), 50 states have call successors, (50), 4 states have call predecessors, (50), 4 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-21 02:22:34,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 420 transitions. [2023-12-21 02:22:34,868 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 420 transitions. Word has length 126 [2023-12-21 02:22:34,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:22:34,869 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 420 transitions. [2023-12-21 02:22:34,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:22:34,869 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 420 transitions. [2023-12-21 02:22:34,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-21 02:22:34,871 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:22:34,871 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:22:34,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 02:22:34,872 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:22:34,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:22:34,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1259970401, now seen corresponding path program 1 times [2023-12-21 02:22:34,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:22:34,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249852681] [2023-12-21 02:22:34,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:34,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:22:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:35,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:22:35,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:35,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:22:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:35,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:22:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:35,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:22:35,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:35,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:22:35,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:35,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:22:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:35,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:22:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:35,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:22:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:35,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:22:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:35,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:22:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:35,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:22:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:35,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:22:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:35,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:22:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:35,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:22:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:35,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:22:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:35,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:22:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:35,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:22:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:35,502 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:22:35,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:22:35,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249852681] [2023-12-21 02:22:35,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249852681] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:22:35,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:22:35,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 02:22:35,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568034634] [2023-12-21 02:22:35,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:22:35,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 02:22:35,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:22:35,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 02:22:35,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 02:22:35,504 INFO L87 Difference]: Start difference. First operand 287 states and 420 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:22:35,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:22:35,776 INFO L93 Difference]: Finished difference Result 565 states and 817 transitions. [2023-12-21 02:22:35,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:22:35,777 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 126 [2023-12-21 02:22:35,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:22:35,780 INFO L225 Difference]: With dead ends: 565 [2023-12-21 02:22:35,780 INFO L226 Difference]: Without dead ends: 419 [2023-12-21 02:22:35,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:22:35,782 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 143 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:22:35,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 377 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:22:35,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-12-21 02:22:35,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 205. [2023-12-21 02:22:35,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 166 states have (on average 1.3493975903614457) internal successors, (224), 166 states have internal predecessors, (224), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 02:22:35,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 292 transitions. [2023-12-21 02:22:35,797 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 292 transitions. Word has length 126 [2023-12-21 02:22:35,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:22:35,798 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 292 transitions. [2023-12-21 02:22:35,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:22:35,798 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 292 transitions. [2023-12-21 02:22:35,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-21 02:22:35,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:22:35,799 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:22:35,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 02:22:35,799 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:22:35,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:22:35,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1694534913, now seen corresponding path program 1 times [2023-12-21 02:22:35,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:22:35,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470036732] [2023-12-21 02:22:35,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:35,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:22:35,818 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:22:35,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1918325359] [2023-12-21 02:22:35,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:35,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:22:35,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:22:35,821 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) [2023-12-21 02:22:35,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 02:22:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:36,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 02:22:36,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:22:36,108 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:22:36,108 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 27 treesize of output 28 [2023-12-21 02:22:36,130 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:22:36,130 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 41 treesize of output 31 [2023-12-21 02:22:36,159 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 24 proven. 24 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-21 02:22:36,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 02:22:36,231 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:22:36,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:22:36,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470036732] [2023-12-21 02:22:36,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:22:36,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918325359] [2023-12-21 02:22:36,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918325359] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 02:22:36,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 02:22:36,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2023-12-21 02:22:36,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707560812] [2023-12-21 02:22:36,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:22:36,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 02:22:36,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:22:36,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 02:22:36,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 02:22:36,234 INFO L87 Difference]: Start difference. First operand 205 states and 292 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:36,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:22:36,449 INFO L93 Difference]: Finished difference Result 378 states and 539 transitions. [2023-12-21 02:22:36,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:22:36,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 127 [2023-12-21 02:22:36,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:22:36,452 INFO L225 Difference]: With dead ends: 378 [2023-12-21 02:22:36,452 INFO L226 Difference]: Without dead ends: 273 [2023-12-21 02:22:36,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-21 02:22:36,453 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 96 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 459 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 [2023-12-21 02:22:36,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 459 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:22:36,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-12-21 02:22:36,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 251. [2023-12-21 02:22:36,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 209 states have (on average 1.3636363636363635) internal successors, (285), 210 states have internal predecessors, (285), 36 states have call successors, (36), 5 states have call predecessors, (36), 5 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-21 02:22:36,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 357 transitions. [2023-12-21 02:22:36,474 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 357 transitions. Word has length 127 [2023-12-21 02:22:36,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:22:36,474 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 357 transitions. [2023-12-21 02:22:36,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:36,475 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 357 transitions. [2023-12-21 02:22:36,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-21 02:22:36,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:22:36,476 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:22:36,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 02:22:36,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:22:36,683 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:22:36,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:22:36,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1086791388, now seen corresponding path program 1 times [2023-12-21 02:22:36,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:22:36,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275556243] [2023-12-21 02:22:36,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:36,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:22:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:37,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:22:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:37,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:22:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:37,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:22:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:37,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:22:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:37,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:22:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:37,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:22:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:37,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:22:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:37,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:22:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:37,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:22:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:37,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:22:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:37,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:22:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:37,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:22:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:37,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:22:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:37,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:22:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:37,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:22:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:37,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:22:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:37,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:22:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:37,333 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:22:37,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:22:37,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275556243] [2023-12-21 02:22:37,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275556243] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:22:37,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:22:37,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 02:22:37,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409294787] [2023-12-21 02:22:37,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:22:37,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 02:22:37,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:22:37,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 02:22:37,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 02:22:37,335 INFO L87 Difference]: Start difference. First operand 251 states and 357 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:37,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:22:37,518 INFO L93 Difference]: Finished difference Result 507 states and 720 transitions. [2023-12-21 02:22:37,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 02:22:37,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 128 [2023-12-21 02:22:37,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:22:37,520 INFO L225 Difference]: With dead ends: 507 [2023-12-21 02:22:37,520 INFO L226 Difference]: Without dead ends: 257 [2023-12-21 02:22:37,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:22:37,523 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 104 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:22:37,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 266 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:22:37,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-12-21 02:22:37,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 251. [2023-12-21 02:22:37,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 209 states have (on average 1.3588516746411483) internal successors, (284), 210 states have internal predecessors, (284), 36 states have call successors, (36), 5 states have call predecessors, (36), 5 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-21 02:22:37,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 356 transitions. [2023-12-21 02:22:37,541 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 356 transitions. Word has length 128 [2023-12-21 02:22:37,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:22:37,542 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 356 transitions. [2023-12-21 02:22:37,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:37,543 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 356 transitions. [2023-12-21 02:22:37,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-21 02:22:37,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:22:37,544 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:22:37,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 02:22:37,545 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:22:37,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:22:37,545 INFO L85 PathProgramCache]: Analyzing trace with hash -409325284, now seen corresponding path program 1 times [2023-12-21 02:22:37,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:22:37,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945790520] [2023-12-21 02:22:37,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:37,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:22:37,579 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:22:37,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [295720915] [2023-12-21 02:22:37,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:37,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:22:37,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:22:37,582 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) [2023-12-21 02:22:37,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 02:22:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:37,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 02:22:37,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:22:37,764 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 25 treesize of output 13 [2023-12-21 02:22:37,780 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 29 treesize of output 13 [2023-12-21 02:22:37,787 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 19 treesize of output 7 [2023-12-21 02:22:37,795 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:22:37,795 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:22:37,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:22:37,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945790520] [2023-12-21 02:22:37,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:22:37,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295720915] [2023-12-21 02:22:37,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295720915] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:22:37,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:22:37,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 02:22:37,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090439334] [2023-12-21 02:22:37,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:22:37,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 02:22:37,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:22:37,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 02:22:37,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:22:37,799 INFO L87 Difference]: Start difference. First operand 251 states and 356 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:38,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:22:38,072 INFO L93 Difference]: Finished difference Result 526 states and 747 transitions. [2023-12-21 02:22:38,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:22:38,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 129 [2023-12-21 02:22:38,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:22:38,074 INFO L225 Difference]: With dead ends: 526 [2023-12-21 02:22:38,074 INFO L226 Difference]: Without dead ends: 375 [2023-12-21 02:22:38,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:22:38,075 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 143 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:22:38,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 307 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:22:38,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-12-21 02:22:38,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 350. [2023-12-21 02:22:38,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 288 states have (on average 1.3472222222222223) internal successors, (388), 289 states have internal predecessors, (388), 53 states have call successors, (53), 8 states have call predecessors, (53), 8 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2023-12-21 02:22:38,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 494 transitions. [2023-12-21 02:22:38,093 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 494 transitions. Word has length 129 [2023-12-21 02:22:38,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:22:38,093 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 494 transitions. [2023-12-21 02:22:38,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:38,094 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 494 transitions. [2023-12-21 02:22:38,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-21 02:22:38,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:22:38,115 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:22:38,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-21 02:22:38,320 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,SelfDestructingSolverStorable6 [2023-12-21 02:22:38,321 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:22:38,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:22:38,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1311491078, now seen corresponding path program 1 times [2023-12-21 02:22:38,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:22:38,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255682699] [2023-12-21 02:22:38,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:38,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:22:38,339 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:22:38,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [535534633] [2023-12-21 02:22:38,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:38,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:22:38,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:22:38,340 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) [2023-12-21 02:22:38,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 02:22:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:38,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 02:22:38,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:22:38,490 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 25 treesize of output 13 [2023-12-21 02:22:38,502 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 29 treesize of output 13 [2023-12-21 02:22:38,506 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 19 treesize of output 7 [2023-12-21 02:22:38,525 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:22:38,525 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:22:38,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:22:38,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255682699] [2023-12-21 02:22:38,525 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:22:38,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535534633] [2023-12-21 02:22:38,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535534633] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:22:38,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:22:38,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 02:22:38,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439465720] [2023-12-21 02:22:38,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:22:38,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 02:22:38,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:22:38,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 02:22:38,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:22:38,527 INFO L87 Difference]: Start difference. First operand 350 states and 494 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:38,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:22:38,765 INFO L93 Difference]: Finished difference Result 588 states and 828 transitions. [2023-12-21 02:22:38,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:22:38,766 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 129 [2023-12-21 02:22:38,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:22:38,767 INFO L225 Difference]: With dead ends: 588 [2023-12-21 02:22:38,767 INFO L226 Difference]: Without dead ends: 312 [2023-12-21 02:22:38,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:22:38,768 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 142 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:22:38,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 407 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:22:38,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-12-21 02:22:38,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 207. [2023-12-21 02:22:38,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 167 states have (on average 1.311377245508982) internal successors, (219), 167 states have internal predecessors, (219), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 02:22:38,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 287 transitions. [2023-12-21 02:22:38,781 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 287 transitions. Word has length 129 [2023-12-21 02:22:38,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:22:38,781 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 287 transitions. [2023-12-21 02:22:38,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:38,781 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 287 transitions. [2023-12-21 02:22:38,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 02:22:38,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:22:38,782 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:22:38,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-21 02:22:38,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:22:38,989 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:22:38,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:22:38,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1903195779, now seen corresponding path program 1 times [2023-12-21 02:22:38,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:22:38,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714686938] [2023-12-21 02:22:38,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:38,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:22:39,006 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:22:39,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [774891795] [2023-12-21 02:22:39,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:39,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:22:39,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:22:39,022 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) [2023-12-21 02:22:39,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 02:22:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:39,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 02:22:39,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:22:39,150 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:22:39,151 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:22:39,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:22:39,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714686938] [2023-12-21 02:22:39,151 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:22:39,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774891795] [2023-12-21 02:22:39,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774891795] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:22:39,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:22:39,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 02:22:39,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571071250] [2023-12-21 02:22:39,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:22:39,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 02:22:39,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:22:39,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 02:22:39,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 02:22:39,154 INFO L87 Difference]: Start difference. First operand 207 states and 287 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:39,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:22:39,185 INFO L93 Difference]: Finished difference Result 449 states and 627 transitions. [2023-12-21 02:22:39,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 02:22:39,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 130 [2023-12-21 02:22:39,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:22:39,187 INFO L225 Difference]: With dead ends: 449 [2023-12-21 02:22:39,187 INFO L226 Difference]: Without dead ends: 243 [2023-12-21 02:22:39,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 02:22:39,190 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 25 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 02:22:39,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 233 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 02:22:39,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-12-21 02:22:39,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 209. [2023-12-21 02:22:39,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 169 states have (on average 1.3076923076923077) internal successors, (221), 169 states have internal predecessors, (221), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 02:22:39,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 289 transitions. [2023-12-21 02:22:39,211 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 289 transitions. Word has length 130 [2023-12-21 02:22:39,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:22:39,211 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 289 transitions. [2023-12-21 02:22:39,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:39,212 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 289 transitions. [2023-12-21 02:22:39,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 02:22:39,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:22:39,212 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:22:39,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 02:22:39,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:22:39,419 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:22:39,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:22:39,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1711713147, now seen corresponding path program 1 times [2023-12-21 02:22:39,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:22:39,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998083579] [2023-12-21 02:22:39,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:39,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:22:39,439 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:22:39,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1244659549] [2023-12-21 02:22:39,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:39,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:22:39,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:22:39,453 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) [2023-12-21 02:22:39,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 02:22:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:39,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-21 02:22:39,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:22:39,650 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:22:39,651 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 29 treesize of output 30 [2023-12-21 02:22:39,671 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:22:39,671 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 33 [2023-12-21 02:22:39,684 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:22:39,684 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 51 treesize of output 51 [2023-12-21 02:22:39,723 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:22:39,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 64 treesize of output 63 [2023-12-21 02:22:39,854 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:22:39,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 128 treesize of output 46 [2023-12-21 02:22:39,879 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 24 proven. 24 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-21 02:22:39,879 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 02:22:40,050 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:22:40,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:22:40,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998083579] [2023-12-21 02:22:40,051 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:22:40,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244659549] [2023-12-21 02:22:40,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244659549] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 02:22:40,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 02:22:40,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 17 [2023-12-21 02:22:40,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688583631] [2023-12-21 02:22:40,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:22:40,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 02:22:40,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:22:40,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 02:22:40,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2023-12-21 02:22:40,052 INFO L87 Difference]: Start difference. First operand 209 states and 289 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:40,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:22:40,648 INFO L93 Difference]: Finished difference Result 610 states and 844 transitions. [2023-12-21 02:22:40,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 02:22:40,648 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 130 [2023-12-21 02:22:40,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:22:40,651 INFO L225 Difference]: With dead ends: 610 [2023-12-21 02:22:40,651 INFO L226 Difference]: Without dead ends: 402 [2023-12-21 02:22:40,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2023-12-21 02:22:40,653 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 225 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 02:22:40,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 624 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 02:22:40,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2023-12-21 02:22:40,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 304. [2023-12-21 02:22:40,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 261 states have (on average 1.318007662835249) internal successors, (344), 262 states have internal predecessors, (344), 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) [2023-12-21 02:22:40,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 416 transitions. [2023-12-21 02:22:40,673 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 416 transitions. Word has length 130 [2023-12-21 02:22:40,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:22:40,674 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 416 transitions. [2023-12-21 02:22:40,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:40,674 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 416 transitions. [2023-12-21 02:22:40,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 02:22:40,675 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:22:40,675 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:22:40,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 02:22:40,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-21 02:22:40,883 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:22:40,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:22:40,884 INFO L85 PathProgramCache]: Analyzing trace with hash -73426071, now seen corresponding path program 1 times [2023-12-21 02:22:40,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:22:40,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256032334] [2023-12-21 02:22:40,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:40,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:22:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:41,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:22:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:41,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:22:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:41,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:22:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:41,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:22:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:41,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:22:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:41,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:22:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:41,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:22:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:41,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:22:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:41,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:22:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:41,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:22:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:41,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:22:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:41,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:22:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:41,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:22:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:41,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:22:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:41,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:22:41,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:41,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:22:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:41,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:22:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:41,982 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:22:41,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:22:41,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256032334] [2023-12-21 02:22:41,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256032334] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:22:41,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:22:41,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 02:22:41,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178529700] [2023-12-21 02:22:41,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:22:41,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 02:22:41,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:22:41,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 02:22:41,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 02:22:41,983 INFO L87 Difference]: Start difference. First operand 304 states and 416 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:42,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:22:42,418 INFO L93 Difference]: Finished difference Result 743 states and 1021 transitions. [2023-12-21 02:22:42,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 02:22:42,419 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 130 [2023-12-21 02:22:42,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:22:42,420 INFO L225 Difference]: With dead ends: 743 [2023-12-21 02:22:42,420 INFO L226 Difference]: Without dead ends: 440 [2023-12-21 02:22:42,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-12-21 02:22:42,421 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 159 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:22:42,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 749 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:22:42,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2023-12-21 02:22:42,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 338. [2023-12-21 02:22:42,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 295 states have (on average 1.3152542372881355) internal successors, (388), 296 states have internal predecessors, (388), 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) [2023-12-21 02:22:42,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 460 transitions. [2023-12-21 02:22:42,436 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 460 transitions. Word has length 130 [2023-12-21 02:22:42,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:22:42,437 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 460 transitions. [2023-12-21 02:22:42,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:42,437 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 460 transitions. [2023-12-21 02:22:42,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 02:22:42,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:22:42,438 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:22:42,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 02:22:42,439 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:22:42,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:22:42,439 INFO L85 PathProgramCache]: Analyzing trace with hash 627638507, now seen corresponding path program 1 times [2023-12-21 02:22:42,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:22:42,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137120509] [2023-12-21 02:22:42,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:42,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:22:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:43,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:22:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:43,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:22:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:43,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:22:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:43,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:22:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:43,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:22:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:43,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:22:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:43,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:22:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:43,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:22:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:43,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:22:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:43,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:22:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:43,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:22:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:43,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:22:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:43,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:22:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:43,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:22:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:43,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:22:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:43,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:22:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:43,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:22:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:43,232 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:22:43,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:22:43,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137120509] [2023-12-21 02:22:43,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137120509] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:22:43,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:22:43,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 02:22:43,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935493168] [2023-12-21 02:22:43,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:22:43,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 02:22:43,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:22:43,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 02:22:43,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:22:43,236 INFO L87 Difference]: Start difference. First operand 338 states and 460 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:22:43,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:22:43,591 INFO L93 Difference]: Finished difference Result 792 states and 1080 transitions. [2023-12-21 02:22:43,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 02:22:43,591 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 130 [2023-12-21 02:22:43,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:22:43,595 INFO L225 Difference]: With dead ends: 792 [2023-12-21 02:22:43,595 INFO L226 Difference]: Without dead ends: 455 [2023-12-21 02:22:43,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-21 02:22:43,596 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 91 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:22:43,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 604 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:22:43,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2023-12-21 02:22:43,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 342. [2023-12-21 02:22:43,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 299 states have (on average 1.3110367892976589) internal successors, (392), 300 states have internal predecessors, (392), 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) [2023-12-21 02:22:43,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 464 transitions. [2023-12-21 02:22:43,612 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 464 transitions. Word has length 130 [2023-12-21 02:22:43,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:22:43,612 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 464 transitions. [2023-12-21 02:22:43,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:22:43,612 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 464 transitions. [2023-12-21 02:22:43,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 02:22:43,614 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:22:43,614 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:22:43,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 02:22:43,614 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:22:43,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:22:43,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1762369813, now seen corresponding path program 1 times [2023-12-21 02:22:43,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:22:43,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942627896] [2023-12-21 02:22:43,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:43,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:22:43,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:44,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:22:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:44,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:22:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:44,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:22:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:44,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:22:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:44,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:22:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:44,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:22:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:44,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:22:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:44,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:22:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:44,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:22:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:44,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:22:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:44,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:22:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:44,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:22:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:44,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:22:44,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:44,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:22:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:44,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:22:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:44,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:22:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:44,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:22:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:44,377 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:22:44,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:22:44,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942627896] [2023-12-21 02:22:44,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942627896] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:22:44,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:22:44,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 02:22:44,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322085831] [2023-12-21 02:22:44,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:22:44,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 02:22:44,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:22:44,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 02:22:44,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 02:22:44,379 INFO L87 Difference]: Start difference. First operand 342 states and 464 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:44,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:22:44,608 INFO L93 Difference]: Finished difference Result 722 states and 976 transitions. [2023-12-21 02:22:44,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:22:44,608 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 130 [2023-12-21 02:22:44,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:22:44,610 INFO L225 Difference]: With dead ends: 722 [2023-12-21 02:22:44,610 INFO L226 Difference]: Without dead ends: 381 [2023-12-21 02:22:44,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-21 02:22:44,611 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 84 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:22:44,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 423 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:22:44,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-12-21 02:22:44,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 313. [2023-12-21 02:22:44,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 272 states have (on average 1.2941176470588236) internal successors, (352), 272 states have internal predecessors, (352), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 02:22:44,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 420 transitions. [2023-12-21 02:22:44,626 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 420 transitions. Word has length 130 [2023-12-21 02:22:44,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:22:44,626 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 420 transitions. [2023-12-21 02:22:44,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:44,626 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 420 transitions. [2023-12-21 02:22:44,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 02:22:44,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:22:44,628 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:22:44,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 02:22:44,628 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:22:44,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:22:44,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1061305235, now seen corresponding path program 1 times [2023-12-21 02:22:44,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:22:44,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102580924] [2023-12-21 02:22:44,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:44,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:22:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:45,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:22:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:45,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:22:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:45,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:22:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:45,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:22:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:45,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:22:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:45,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:22:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:45,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:22:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:45,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:22:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:45,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:22:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:45,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:22:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:45,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:22:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:45,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:22:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:45,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:22:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:45,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:22:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:45,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:22:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:45,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:22:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:45,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:22:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:45,373 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:22:45,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:22:45,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102580924] [2023-12-21 02:22:45,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102580924] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:22:45,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:22:45,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 02:22:45,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744581713] [2023-12-21 02:22:45,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:22:45,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 02:22:45,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:22:45,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 02:22:45,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 02:22:45,375 INFO L87 Difference]: Start difference. First operand 313 states and 420 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:45,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:22:45,744 INFO L93 Difference]: Finished difference Result 656 states and 882 transitions. [2023-12-21 02:22:45,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 02:22:45,746 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 130 [2023-12-21 02:22:45,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:22:45,747 INFO L225 Difference]: With dead ends: 656 [2023-12-21 02:22:45,747 INFO L226 Difference]: Without dead ends: 344 [2023-12-21 02:22:45,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-12-21 02:22:45,748 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 139 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:22:45,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 837 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:22:45,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2023-12-21 02:22:45,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 307. [2023-12-21 02:22:45,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 266 states have (on average 1.2932330827067668) internal successors, (344), 266 states have internal predecessors, (344), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 02:22:45,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 412 transitions. [2023-12-21 02:22:45,762 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 412 transitions. Word has length 130 [2023-12-21 02:22:45,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:22:45,762 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 412 transitions. [2023-12-21 02:22:45,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:45,762 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 412 transitions. [2023-12-21 02:22:45,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 02:22:45,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:22:45,763 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:22:45,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 02:22:45,763 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:22:45,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:22:45,764 INFO L85 PathProgramCache]: Analyzing trace with hash 198970913, now seen corresponding path program 1 times [2023-12-21 02:22:45,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:22:45,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242681101] [2023-12-21 02:22:45,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:45,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:22:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:46,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:22:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:46,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:22:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:46,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:22:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:46,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:22:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:46,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:22:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:46,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:22:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:46,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:22:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:46,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:22:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:46,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:22:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:46,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:22:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:46,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:22:46,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:46,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:22:46,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:46,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:22:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:46,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:22:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:46,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:22:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:46,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:22:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:46,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:22:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:46,475 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:22:46,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:22:46,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242681101] [2023-12-21 02:22:46,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242681101] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:22:46,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:22:46,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 02:22:46,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49693905] [2023-12-21 02:22:46,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:22:46,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 02:22:46,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:22:46,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 02:22:46,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 02:22:46,477 INFO L87 Difference]: Start difference. First operand 307 states and 412 transitions. Second operand has 10 states, 8 states have (on average 6.0) internal successors, (48), 10 states have internal predecessors, (48), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-21 02:22:46,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:22:46,967 INFO L93 Difference]: Finished difference Result 795 states and 1063 transitions. [2023-12-21 02:22:46,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 02:22:46,967 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.0) internal successors, (48), 10 states have internal predecessors, (48), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 3 states have call successors, (17) Word has length 130 [2023-12-21 02:22:46,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:22:46,969 INFO L225 Difference]: With dead ends: 795 [2023-12-21 02:22:46,969 INFO L226 Difference]: Without dead ends: 489 [2023-12-21 02:22:46,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-12-21 02:22:46,970 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 162 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:22:46,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 728 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:22:46,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2023-12-21 02:22:46,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 327. [2023-12-21 02:22:46,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 286 states have (on average 1.2867132867132867) internal successors, (368), 286 states have internal predecessors, (368), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 02:22:46,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 436 transitions. [2023-12-21 02:22:46,983 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 436 transitions. Word has length 130 [2023-12-21 02:22:46,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:22:46,983 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 436 transitions. [2023-12-21 02:22:46,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.0) internal successors, (48), 10 states have internal predecessors, (48), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-21 02:22:46,984 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 436 transitions. [2023-12-21 02:22:46,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 02:22:46,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:22:46,985 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:22:46,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 02:22:46,985 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:22:46,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:22:46,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1389376989, now seen corresponding path program 1 times [2023-12-21 02:22:46,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:22:46,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151829640] [2023-12-21 02:22:46,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:46,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:22:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:22:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:22:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:22:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:22:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:22:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:22:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:22:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:22:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:22:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:22:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:22:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:22:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:22:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:22:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:22:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:22:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:22:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,342 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:22:47,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:22:47,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151829640] [2023-12-21 02:22:47,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151829640] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:22:47,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:22:47,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 02:22:47,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908009731] [2023-12-21 02:22:47,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:22:47,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 02:22:47,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:22:47,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 02:22:47,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 02:22:47,344 INFO L87 Difference]: Start difference. First operand 327 states and 436 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:22:47,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:22:47,613 INFO L93 Difference]: Finished difference Result 829 states and 1109 transitions. [2023-12-21 02:22:47,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:22:47,628 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 130 [2023-12-21 02:22:47,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:22:47,630 INFO L225 Difference]: With dead ends: 829 [2023-12-21 02:22:47,630 INFO L226 Difference]: Without dead ends: 503 [2023-12-21 02:22:47,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:22:47,631 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 168 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:22:47,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 369 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:22:47,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2023-12-21 02:22:47,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 343. [2023-12-21 02:22:47,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 302 states have (on average 1.2748344370860927) internal successors, (385), 302 states have internal predecessors, (385), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 02:22:47,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 453 transitions. [2023-12-21 02:22:47,646 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 453 transitions. Word has length 130 [2023-12-21 02:22:47,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:22:47,646 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 453 transitions. [2023-12-21 02:22:47,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:22:47,647 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 453 transitions. [2023-12-21 02:22:47,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 02:22:47,648 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:22:47,648 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:22:47,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 02:22:47,648 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:22:47,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:22:47,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1782403999, now seen corresponding path program 1 times [2023-12-21 02:22:47,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:22:47,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250624309] [2023-12-21 02:22:47,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:47,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:22:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:22:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:22:47,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:22:47,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:22:47,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:22:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:22:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:22:47,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:22:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:22:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:22:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:22:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:22:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:22:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:22:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:22:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:22:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:22:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:47,976 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:22:47,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:22:47,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250624309] [2023-12-21 02:22:47,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250624309] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:22:47,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:22:47,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 02:22:47,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670999504] [2023-12-21 02:22:47,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:22:47,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 02:22:47,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:22:47,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 02:22:47,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 02:22:47,978 INFO L87 Difference]: Start difference. First operand 343 states and 453 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:22:48,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:22:48,266 INFO L93 Difference]: Finished difference Result 819 states and 1080 transitions. [2023-12-21 02:22:48,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:22:48,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 130 [2023-12-21 02:22:48,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:22:48,268 INFO L225 Difference]: With dead ends: 819 [2023-12-21 02:22:48,268 INFO L226 Difference]: Without dead ends: 477 [2023-12-21 02:22:48,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:22:48,269 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 93 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:22:48,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 545 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:22:48,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2023-12-21 02:22:48,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 439. [2023-12-21 02:22:48,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 372 states have (on average 1.2553763440860215) internal successors, (467), 374 states have internal predecessors, (467), 54 states have call successors, (54), 12 states have call predecessors, (54), 12 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-21 02:22:48,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 575 transitions. [2023-12-21 02:22:48,292 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 575 transitions. Word has length 130 [2023-12-21 02:22:48,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:22:48,293 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 575 transitions. [2023-12-21 02:22:48,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:22:48,293 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 575 transitions. [2023-12-21 02:22:48,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 02:22:48,294 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:22:48,294 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:22:48,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 02:22:48,294 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:22:48,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:22:48,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1604353875, now seen corresponding path program 1 times [2023-12-21 02:22:48,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:22:48,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336601596] [2023-12-21 02:22:48,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:48,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:22:48,309 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:22:48,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1036562334] [2023-12-21 02:22:48,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:48,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:22:48,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:22:48,310 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) [2023-12-21 02:22:48,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 02:22:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:48,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 02:22:48,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:22:48,507 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 [2023-12-21 02:22:48,518 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:22:48,519 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 [2023-12-21 02:22:48,530 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:22:48,530 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 [2023-12-21 02:22:48,566 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 24 proven. 24 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-21 02:22:48,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 02:22:48,644 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:22:48,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:22:48,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336601596] [2023-12-21 02:22:48,645 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:22:48,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036562334] [2023-12-21 02:22:48,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036562334] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 02:22:48,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 02:22:48,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 11 [2023-12-21 02:22:48,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788457241] [2023-12-21 02:22:48,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:22:48,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 02:22:48,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:22:48,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 02:22:48,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-21 02:22:48,648 INFO L87 Difference]: Start difference. First operand 439 states and 575 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:48,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:22:48,936 INFO L93 Difference]: Finished difference Result 1056 states and 1387 transitions. [2023-12-21 02:22:48,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 02:22:48,937 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2023-12-21 02:22:48,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:22:48,938 INFO L225 Difference]: With dead ends: 1056 [2023-12-21 02:22:48,939 INFO L226 Difference]: Without dead ends: 618 [2023-12-21 02:22:48,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2023-12-21 02:22:48,941 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 167 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:22:48,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 586 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:22:48,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2023-12-21 02:22:48,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 578. [2023-12-21 02:22:48,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 495 states have (on average 1.2484848484848485) internal successors, (618), 499 states have internal predecessors, (618), 66 states have call successors, (66), 16 states have call predecessors, (66), 16 states have return successors, (66), 62 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-21 02:22:48,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 750 transitions. [2023-12-21 02:22:48,974 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 750 transitions. Word has length 134 [2023-12-21 02:22:48,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:22:48,974 INFO L495 AbstractCegarLoop]: Abstraction has 578 states and 750 transitions. [2023-12-21 02:22:48,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:48,975 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 750 transitions. [2023-12-21 02:22:48,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 02:22:48,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:22:48,976 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:22:48,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 02:22:49,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-21 02:22:49,196 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:22:49,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:22:49,196 INFO L85 PathProgramCache]: Analyzing trace with hash -420155260, now seen corresponding path program 1 times [2023-12-21 02:22:49,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:22:49,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681776865] [2023-12-21 02:22:49,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:49,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:22:49,216 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:22:49,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1108790406] [2023-12-21 02:22:49,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:49,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:22:49,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:22:49,234 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) [2023-12-21 02:22:49,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 02:22:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:49,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 02:22:49,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:22:49,395 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:22:49,396 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 35 [2023-12-21 02:22:49,413 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:22:49,413 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 38 [2023-12-21 02:22:49,432 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:22:49,433 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 54 treesize of output 38 [2023-12-21 02:22:49,469 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:22:49,469 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 53 treesize of output 17 [2023-12-21 02:22:49,477 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:22:49,477 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:22:49,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:22:49,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681776865] [2023-12-21 02:22:49,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:22:49,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108790406] [2023-12-21 02:22:49,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108790406] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:22:49,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:22:49,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 02:22:49,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788480383] [2023-12-21 02:22:49,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:22:49,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 02:22:49,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:22:49,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 02:22:49,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 02:22:49,479 INFO L87 Difference]: Start difference. First operand 578 states and 750 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:49,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:22:49,868 INFO L93 Difference]: Finished difference Result 1475 states and 1908 transitions. [2023-12-21 02:22:49,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 02:22:49,869 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2023-12-21 02:22:49,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:22:49,871 INFO L225 Difference]: With dead ends: 1475 [2023-12-21 02:22:49,872 INFO L226 Difference]: Without dead ends: 898 [2023-12-21 02:22:49,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-21 02:22:49,873 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 167 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:22:49,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 338 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:22:49,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2023-12-21 02:22:49,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 788. [2023-12-21 02:22:49,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 689 states have (on average 1.2438316400580551) internal successors, (857), 695 states have internal predecessors, (857), 78 states have call successors, (78), 20 states have call predecessors, (78), 20 states have return successors, (78), 72 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-21 02:22:49,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1013 transitions. [2023-12-21 02:22:49,911 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1013 transitions. Word has length 134 [2023-12-21 02:22:49,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:22:49,911 INFO L495 AbstractCegarLoop]: Abstraction has 788 states and 1013 transitions. [2023-12-21 02:22:49,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:49,911 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1013 transitions. [2023-12-21 02:22:49,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 02:22:49,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:22:49,912 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:22:49,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 02:22:50,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:22:50,120 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:22:50,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:22:50,120 INFO L85 PathProgramCache]: Analyzing trace with hash 690676371, now seen corresponding path program 1 times [2023-12-21 02:22:50,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:22:50,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597798501] [2023-12-21 02:22:50,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:50,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:22:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:22:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:22:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:22:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:22:50,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:22:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:22:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:22:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:22:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:22:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:22:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:22:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:22:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:22:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:22:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:22:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:22:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:22:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,248 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:22:50,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:22:50,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597798501] [2023-12-21 02:22:50,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597798501] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:22:50,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:22:50,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 02:22:50,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122919221] [2023-12-21 02:22:50,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:22:50,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 02:22:50,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:22:50,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 02:22:50,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:22:50,250 INFO L87 Difference]: Start difference. First operand 788 states and 1013 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:50,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:22:50,453 INFO L93 Difference]: Finished difference Result 1801 states and 2320 transitions. [2023-12-21 02:22:50,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:22:50,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2023-12-21 02:22:50,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:22:50,456 INFO L225 Difference]: With dead ends: 1801 [2023-12-21 02:22:50,456 INFO L226 Difference]: Without dead ends: 1014 [2023-12-21 02:22:50,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:22:50,458 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 96 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:22:50,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 316 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:22:50,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2023-12-21 02:22:50,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 796. [2023-12-21 02:22:50,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 697 states have (on average 1.2324246771879483) internal successors, (859), 703 states have internal predecessors, (859), 78 states have call successors, (78), 20 states have call predecessors, (78), 20 states have return successors, (78), 72 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-21 02:22:50,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1015 transitions. [2023-12-21 02:22:50,495 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1015 transitions. Word has length 134 [2023-12-21 02:22:50,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:22:50,496 INFO L495 AbstractCegarLoop]: Abstraction has 796 states and 1015 transitions. [2023-12-21 02:22:50,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:50,496 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1015 transitions. [2023-12-21 02:22:50,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 02:22:50,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:22:50,497 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:22:50,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 02:22:50,497 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:22:50,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:22:50,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1874874986, now seen corresponding path program 1 times [2023-12-21 02:22:50,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:22:50,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181110827] [2023-12-21 02:22:50,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:50,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:22:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:22:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:22:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:22:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:22:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:22:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:22:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:22:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:22:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:22:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:22:50,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:22:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:22:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:22:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:22:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:22:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:22:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:22:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:50,866 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:22:50,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:22:50,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181110827] [2023-12-21 02:22:50,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181110827] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:22:50,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:22:50,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 02:22:50,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087681839] [2023-12-21 02:22:50,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:22:50,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 02:22:50,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:22:50,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 02:22:50,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 02:22:50,868 INFO L87 Difference]: Start difference. First operand 796 states and 1015 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:22:51,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:22:51,128 INFO L93 Difference]: Finished difference Result 1851 states and 2354 transitions. [2023-12-21 02:22:51,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:22:51,128 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 134 [2023-12-21 02:22:51,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:22:51,131 INFO L225 Difference]: With dead ends: 1851 [2023-12-21 02:22:51,131 INFO L226 Difference]: Without dead ends: 1056 [2023-12-21 02:22:51,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:22:51,133 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 147 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:22:51,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 318 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:22:51,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2023-12-21 02:22:51,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 800. [2023-12-21 02:22:51,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 701 states have (on average 1.231098430813124) internal successors, (863), 707 states have internal predecessors, (863), 78 states have call successors, (78), 20 states have call predecessors, (78), 20 states have return successors, (78), 72 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-21 02:22:51,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1019 transitions. [2023-12-21 02:22:51,171 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1019 transitions. Word has length 134 [2023-12-21 02:22:51,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:22:51,171 INFO L495 AbstractCegarLoop]: Abstraction has 800 states and 1019 transitions. [2023-12-21 02:22:51,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:22:51,171 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1019 transitions. [2023-12-21 02:22:51,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 02:22:51,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:22:51,172 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:22:51,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 02:22:51,172 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:22:51,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:22:51,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1833286296, now seen corresponding path program 1 times [2023-12-21 02:22:51,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:22:51,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378111296] [2023-12-21 02:22:51,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:51,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:22:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:51,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:22:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:51,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:22:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:51,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:22:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:51,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:22:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:51,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:22:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:51,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:22:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:51,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:22:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:51,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:22:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:51,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:22:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:51,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:22:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:51,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:22:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:51,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:22:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:51,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:22:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:51,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:22:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:51,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:22:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:51,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:22:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:51,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:22:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:51,511 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-21 02:22:51,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:22:51,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378111296] [2023-12-21 02:22:51,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378111296] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 02:22:51,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232047821] [2023-12-21 02:22:51,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:51,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:22:51,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:22:51,512 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) [2023-12-21 02:22:51,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 02:22:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:51,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-21 02:22:51,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:22:51,709 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 [2023-12-21 02:22:51,726 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:22:51,727 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 42 [2023-12-21 02:22:51,767 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:22:51,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 67 [2023-12-21 02:22:51,929 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:22:51,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 74 treesize of output 22 [2023-12-21 02:22:51,988 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 24 proven. 24 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-21 02:22:51,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 02:22:52,201 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:22:52,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232047821] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 02:22:52,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-21 02:22:52,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [7, 16] total 25 [2023-12-21 02:22:52,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224378601] [2023-12-21 02:22:52,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:22:52,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 02:22:52,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:22:52,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 02:22:52,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2023-12-21 02:22:52,203 INFO L87 Difference]: Start difference. First operand 800 states and 1019 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:52,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:22:52,814 INFO L93 Difference]: Finished difference Result 1930 states and 2465 transitions. [2023-12-21 02:22:52,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 02:22:52,815 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2023-12-21 02:22:52,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:22:52,818 INFO L225 Difference]: With dead ends: 1930 [2023-12-21 02:22:52,818 INFO L226 Difference]: Without dead ends: 1131 [2023-12-21 02:22:52,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 289 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=164, Invalid=892, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 02:22:52,820 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 143 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:22:52,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 1114 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:22:52,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2023-12-21 02:22:52,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 946. [2023-12-21 02:22:52,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 847 states have (on average 1.2396694214876034) internal successors, (1050), 853 states have internal predecessors, (1050), 78 states have call successors, (78), 20 states have call predecessors, (78), 20 states have return successors, (78), 72 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-21 02:22:52,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1206 transitions. [2023-12-21 02:22:52,862 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1206 transitions. Word has length 134 [2023-12-21 02:22:52,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:22:52,862 INFO L495 AbstractCegarLoop]: Abstraction has 946 states and 1206 transitions. [2023-12-21 02:22:52,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:52,863 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1206 transitions. [2023-12-21 02:22:52,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 02:22:52,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:22:52,864 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:22:52,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 02:22:53,070 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,SelfDestructingSolverStorable21 [2023-12-21 02:22:53,071 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:22:53,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:22:53,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1652334374, now seen corresponding path program 1 times [2023-12-21 02:22:53,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:22:53,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394912319] [2023-12-21 02:22:53,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:53,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:22:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:53,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:22:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:53,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:22:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:53,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:22:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:53,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:22:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:53,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:22:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:53,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:22:53,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:53,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:22:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:53,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:22:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:53,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:22:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:53,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:22:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:53,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:22:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:53,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:22:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:53,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:22:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:53,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:22:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:53,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:22:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:53,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:22:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:53,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:22:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:53,488 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:22:53,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:22:53,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394912319] [2023-12-21 02:22:53,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394912319] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:22:53,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:22:53,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 02:22:53,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019756192] [2023-12-21 02:22:53,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:22:53,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 02:22:53,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:22:53,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 02:22:53,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:22:53,490 INFO L87 Difference]: Start difference. First operand 946 states and 1206 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:53,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:22:53,748 INFO L93 Difference]: Finished difference Result 2099 states and 2674 transitions. [2023-12-21 02:22:53,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:22:53,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2023-12-21 02:22:53,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:22:53,752 INFO L225 Difference]: With dead ends: 2099 [2023-12-21 02:22:53,752 INFO L226 Difference]: Without dead ends: 1154 [2023-12-21 02:22:53,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:22:53,754 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 76 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:22:53,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 427 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:22:53,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2023-12-21 02:22:53,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1072. [2023-12-21 02:22:53,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 949 states have (on average 1.2307692307692308) internal successors, (1168), 959 states have internal predecessors, (1168), 94 states have call successors, (94), 28 states have call predecessors, (94), 28 states have return successors, (94), 84 states have call predecessors, (94), 94 states have call successors, (94) [2023-12-21 02:22:53,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1356 transitions. [2023-12-21 02:22:53,819 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1356 transitions. Word has length 134 [2023-12-21 02:22:53,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:22:53,819 INFO L495 AbstractCegarLoop]: Abstraction has 1072 states and 1356 transitions. [2023-12-21 02:22:53,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:53,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1356 transitions. [2023-12-21 02:22:53,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 02:22:53,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:22:53,821 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:22:53,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 02:22:53,822 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:22:53,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:22:53,822 INFO L85 PathProgramCache]: Analyzing trace with hash 2101018788, now seen corresponding path program 1 times [2023-12-21 02:22:53,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:22:53,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899578673] [2023-12-21 02:22:53,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:53,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:22:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:54,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:22:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:54,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:22:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:54,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:22:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:54,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:22:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:54,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:22:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:54,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:22:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:54,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:22:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:54,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:22:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:54,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:22:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:54,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:22:54,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:54,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:22:54,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:54,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:22:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:54,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:22:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:54,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:22:54,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:54,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:22:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:54,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:22:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:54,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:22:54,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:54,721 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:22:54,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:22:54,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899578673] [2023-12-21 02:22:54,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899578673] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:22:54,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:22:54,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 02:22:54,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071487802] [2023-12-21 02:22:54,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:22:54,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 02:22:54,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:22:54,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 02:22:54,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-21 02:22:54,723 INFO L87 Difference]: Start difference. First operand 1072 states and 1356 transitions. Second operand has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:22:55,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:22:55,508 INFO L93 Difference]: Finished difference Result 2295 states and 2896 transitions. [2023-12-21 02:22:55,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 02:22:55,508 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 134 [2023-12-21 02:22:55,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:22:55,515 INFO L225 Difference]: With dead ends: 2295 [2023-12-21 02:22:55,515 INFO L226 Difference]: Without dead ends: 1224 [2023-12-21 02:22:55,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2023-12-21 02:22:55,532 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 301 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 02:22:55,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 794 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 02:22:55,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2023-12-21 02:22:55,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1137. [2023-12-21 02:22:55,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 1008 states have (on average 1.2281746031746033) internal successors, (1238), 1019 states have internal predecessors, (1238), 98 states have call successors, (98), 30 states have call predecessors, (98), 30 states have return successors, (98), 87 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-21 02:22:55,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1434 transitions. [2023-12-21 02:22:55,606 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1434 transitions. Word has length 134 [2023-12-21 02:22:55,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:22:55,606 INFO L495 AbstractCegarLoop]: Abstraction has 1137 states and 1434 transitions. [2023-12-21 02:22:55,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:22:55,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1434 transitions. [2023-12-21 02:22:55,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 02:22:55,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:22:55,608 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:22:55,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 02:22:55,608 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:22:55,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:22:55,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1291672162, now seen corresponding path program 1 times [2023-12-21 02:22:55,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:22:55,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14979835] [2023-12-21 02:22:55,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:55,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:22:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:56,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:22:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:56,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:22:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:56,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:22:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:56,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:22:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:56,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:22:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:56,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:22:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:56,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:22:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:56,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:22:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:56,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:22:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:56,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:22:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:56,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:22:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:56,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:22:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:56,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:22:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:56,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:22:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:56,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:22:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:56,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:22:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:56,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:22:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:56,376 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:22:56,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:22:56,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14979835] [2023-12-21 02:22:56,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14979835] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:22:56,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:22:56,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 02:22:56,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862199111] [2023-12-21 02:22:56,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:22:56,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 02:22:56,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:22:56,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 02:22:56,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 02:22:56,378 INFO L87 Difference]: Start difference. First operand 1137 states and 1434 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:56,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:22:56,917 INFO L93 Difference]: Finished difference Result 2393 states and 3033 transitions. [2023-12-21 02:22:56,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 02:22:56,918 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2023-12-21 02:22:56,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:22:56,921 INFO L225 Difference]: With dead ends: 2393 [2023-12-21 02:22:56,921 INFO L226 Difference]: Without dead ends: 1273 [2023-12-21 02:22:56,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2023-12-21 02:22:56,923 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 124 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:22:56,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 924 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:22:56,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2023-12-21 02:22:56,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1136. [2023-12-21 02:22:56,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1007 states have (on average 1.227408142999007) internal successors, (1236), 1018 states have internal predecessors, (1236), 98 states have call successors, (98), 30 states have call predecessors, (98), 30 states have return successors, (98), 87 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-21 02:22:56,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1432 transitions. [2023-12-21 02:22:56,980 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1432 transitions. Word has length 134 [2023-12-21 02:22:56,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:22:56,980 INFO L495 AbstractCegarLoop]: Abstraction has 1136 states and 1432 transitions. [2023-12-21 02:22:56,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:56,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1432 transitions. [2023-12-21 02:22:56,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 02:22:56,982 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:22:56,982 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:22:56,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-21 02:22:56,982 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:22:56,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:22:56,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1771246682, now seen corresponding path program 1 times [2023-12-21 02:22:56,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:22:56,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338747236] [2023-12-21 02:22:56,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:56,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:22:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:57,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:22:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:57,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:22:57,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:57,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:22:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:57,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:22:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:57,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:22:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:57,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:22:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:57,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:22:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:57,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:22:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:57,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:22:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:57,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:22:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:57,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:22:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:57,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:22:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:57,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:22:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:57,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:22:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:57,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:22:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:57,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:22:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:57,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:22:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:57,389 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:22:57,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:22:57,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338747236] [2023-12-21 02:22:57,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338747236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:22:57,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:22:57,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 02:22:57,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642705502] [2023-12-21 02:22:57,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:22:57,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 02:22:57,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:22:57,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 02:22:57,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:22:57,391 INFO L87 Difference]: Start difference. First operand 1136 states and 1432 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:57,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:22:57,702 INFO L93 Difference]: Finished difference Result 2387 states and 3002 transitions. [2023-12-21 02:22:57,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:22:57,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2023-12-21 02:22:57,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:22:57,705 INFO L225 Difference]: With dead ends: 2387 [2023-12-21 02:22:57,705 INFO L226 Difference]: Without dead ends: 1268 [2023-12-21 02:22:57,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:22:57,707 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 63 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:22:57,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 388 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:22:57,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2023-12-21 02:22:57,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 968. [2023-12-21 02:22:57,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 859 states have (on average 1.2246798603026776) internal successors, (1052), 866 states have internal predecessors, (1052), 82 states have call successors, (82), 26 states have call predecessors, (82), 26 states have return successors, (82), 75 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-21 02:22:57,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1216 transitions. [2023-12-21 02:22:57,757 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1216 transitions. Word has length 134 [2023-12-21 02:22:57,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:22:57,757 INFO L495 AbstractCegarLoop]: Abstraction has 968 states and 1216 transitions. [2023-12-21 02:22:57,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:57,758 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1216 transitions. [2023-12-21 02:22:57,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-21 02:22:57,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:22:57,759 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:22:57,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 02:22:57,759 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:22:57,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:22:57,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1787103267, now seen corresponding path program 1 times [2023-12-21 02:22:57,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:22:57,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456548135] [2023-12-21 02:22:57,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:57,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:22:57,774 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:22:57,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1605880259] [2023-12-21 02:22:57,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:57,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:22:57,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:22:57,782 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) [2023-12-21 02:22:57,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 02:22:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:57,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-21 02:22:57,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:22:58,003 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:22:58,004 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 [2023-12-21 02:22:58,010 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:22:58,010 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 [2023-12-21 02:22:58,020 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:22:58,020 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 [2023-12-21 02:22:58,048 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 24 proven. 24 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-21 02:22:58,048 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 02:22:58,246 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:22:58,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:22:58,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456548135] [2023-12-21 02:22:58,246 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:22:58,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605880259] [2023-12-21 02:22:58,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605880259] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 02:22:58,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 02:22:58,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 15 [2023-12-21 02:22:58,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696069831] [2023-12-21 02:22:58,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:22:58,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 02:22:58,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:22:58,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 02:22:58,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-12-21 02:22:58,247 INFO L87 Difference]: Start difference. First operand 968 states and 1216 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:58,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:22:58,975 INFO L93 Difference]: Finished difference Result 2179 states and 2718 transitions. [2023-12-21 02:22:58,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-21 02:22:58,975 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 135 [2023-12-21 02:22:58,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:22:58,978 INFO L225 Difference]: With dead ends: 2179 [2023-12-21 02:22:58,978 INFO L226 Difference]: Without dead ends: 1228 [2023-12-21 02:22:58,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 255 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=200, Invalid=670, Unknown=0, NotChecked=0, Total=870 [2023-12-21 02:22:58,980 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 360 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 02:22:58,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 848 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 02:22:58,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2023-12-21 02:22:59,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 976. [2023-12-21 02:22:59,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 863 states have (on average 1.2213209733487833) internal successors, (1054), 870 states have internal predecessors, (1054), 82 states have call successors, (82), 30 states have call predecessors, (82), 30 states have return successors, (82), 75 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-21 02:22:59,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1218 transitions. [2023-12-21 02:22:59,053 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1218 transitions. Word has length 135 [2023-12-21 02:22:59,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:22:59,054 INFO L495 AbstractCegarLoop]: Abstraction has 976 states and 1218 transitions. [2023-12-21 02:22:59,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:59,054 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1218 transitions. [2023-12-21 02:22:59,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 02:22:59,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:22:59,055 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:22:59,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 02:22:59,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-21 02:22:59,262 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:22:59,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:22:59,262 INFO L85 PathProgramCache]: Analyzing trace with hash -584586431, now seen corresponding path program 1 times [2023-12-21 02:22:59,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:22:59,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476995644] [2023-12-21 02:22:59,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:59,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:22:59,275 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:22:59,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [163651959] [2023-12-21 02:22:59,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:59,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:22:59,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:22:59,276 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) [2023-12-21 02:22:59,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 02:22:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:22:59,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 02:22:59,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:22:59,471 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 22 treesize of output 10 [2023-12-21 02:22:59,477 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:22:59,477 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:22:59,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:22:59,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476995644] [2023-12-21 02:22:59,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:22:59,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163651959] [2023-12-21 02:22:59,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163651959] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:22:59,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:22:59,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 02:22:59,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933796148] [2023-12-21 02:22:59,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:22:59,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 02:22:59,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:22:59,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 02:22:59,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:22:59,478 INFO L87 Difference]: Start difference. First operand 976 states and 1218 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:59,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:22:59,682 INFO L93 Difference]: Finished difference Result 2115 states and 2628 transitions. [2023-12-21 02:22:59,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:22:59,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 136 [2023-12-21 02:22:59,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:22:59,685 INFO L225 Difference]: With dead ends: 2115 [2023-12-21 02:22:59,685 INFO L226 Difference]: Without dead ends: 1156 [2023-12-21 02:22:59,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:22:59,687 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 79 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:22:59,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 384 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:22:59,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2023-12-21 02:22:59,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1002. [2023-12-21 02:22:59,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 889 states have (on average 1.2148481439820022) internal successors, (1080), 896 states have internal predecessors, (1080), 82 states have call successors, (82), 30 states have call predecessors, (82), 30 states have return successors, (82), 75 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-21 02:22:59,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1244 transitions. [2023-12-21 02:22:59,732 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1244 transitions. Word has length 136 [2023-12-21 02:22:59,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:22:59,732 INFO L495 AbstractCegarLoop]: Abstraction has 1002 states and 1244 transitions. [2023-12-21 02:22:59,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:22:59,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1244 transitions. [2023-12-21 02:22:59,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 02:22:59,734 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:22:59,734 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:22:59,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 02:22:59,940 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,SelfDestructingSolverStorable27 [2023-12-21 02:22:59,940 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:22:59,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:22:59,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1016421823, now seen corresponding path program 1 times [2023-12-21 02:22:59,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:22:59,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927330650] [2023-12-21 02:22:59,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:59,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:22:59,953 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:22:59,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [464241277] [2023-12-21 02:22:59,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:22:59,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:22:59,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:22:59,955 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) [2023-12-21 02:22:59,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 02:23:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:00,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 02:23:00,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:23:00,116 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 [2023-12-21 02:23:00,126 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:23:00,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:23:00,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:23:00,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927330650] [2023-12-21 02:23:00,127 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:23:00,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464241277] [2023-12-21 02:23:00,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464241277] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:23:00,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:23:00,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 02:23:00,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419901036] [2023-12-21 02:23:00,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:23:00,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 02:23:00,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:23:00,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 02:23:00,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:23:00,128 INFO L87 Difference]: Start difference. First operand 1002 states and 1244 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:23:00,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:23:00,303 INFO L93 Difference]: Finished difference Result 2093 states and 2576 transitions. [2023-12-21 02:23:00,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:23:00,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 136 [2023-12-21 02:23:00,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:23:00,308 INFO L225 Difference]: With dead ends: 2093 [2023-12-21 02:23:00,309 INFO L226 Difference]: Without dead ends: 938 [2023-12-21 02:23:00,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 02:23:00,310 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 97 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:23:00,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 384 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:23:00,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2023-12-21 02:23:00,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 862. [2023-12-21 02:23:00,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 749 states have (on average 1.1535380507343125) internal successors, (864), 756 states have internal predecessors, (864), 82 states have call successors, (82), 30 states have call predecessors, (82), 30 states have return successors, (82), 75 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-21 02:23:00,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1028 transitions. [2023-12-21 02:23:00,355 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1028 transitions. Word has length 136 [2023-12-21 02:23:00,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:23:00,355 INFO L495 AbstractCegarLoop]: Abstraction has 862 states and 1028 transitions. [2023-12-21 02:23:00,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:23:00,355 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1028 transitions. [2023-12-21 02:23:00,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 02:23:00,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:23:00,356 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:23:00,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 02:23:00,562 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,SelfDestructingSolverStorable28 [2023-12-21 02:23:00,563 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:23:00,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:23:00,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1786873501, now seen corresponding path program 1 times [2023-12-21 02:23:00,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:23:00,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899462232] [2023-12-21 02:23:00,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:23:00,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:23:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:01,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:23:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:01,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:23:01,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:01,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:23:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:01,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:23:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:01,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:23:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:01,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:23:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:01,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:23:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:01,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:23:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:01,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:23:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:01,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:23:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:01,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:23:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:01,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:23:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:01,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:23:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:01,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:23:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:01,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:23:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:01,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:23:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:01,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:23:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:01,071 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:23:01,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:23:01,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899462232] [2023-12-21 02:23:01,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899462232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:23:01,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:23:01,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 02:23:01,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314892520] [2023-12-21 02:23:01,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:23:01,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 02:23:01,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:23:01,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 02:23:01,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 02:23:01,072 INFO L87 Difference]: Start difference. First operand 862 states and 1028 transitions. Second operand has 6 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:23:01,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:23:01,424 INFO L93 Difference]: Finished difference Result 1705 states and 2032 transitions. [2023-12-21 02:23:01,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:23:01,424 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 136 [2023-12-21 02:23:01,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:23:01,426 INFO L225 Difference]: With dead ends: 1705 [2023-12-21 02:23:01,426 INFO L226 Difference]: Without dead ends: 860 [2023-12-21 02:23:01,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:23:01,428 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 66 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:23:01,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 448 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:23:01,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2023-12-21 02:23:01,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 854. [2023-12-21 02:23:01,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 741 states have (on average 1.1417004048582995) internal successors, (846), 748 states have internal predecessors, (846), 82 states have call successors, (82), 30 states have call predecessors, (82), 30 states have return successors, (82), 75 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-21 02:23:01,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1010 transitions. [2023-12-21 02:23:01,482 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1010 transitions. Word has length 136 [2023-12-21 02:23:01,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:23:01,482 INFO L495 AbstractCegarLoop]: Abstraction has 854 states and 1010 transitions. [2023-12-21 02:23:01,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:23:01,483 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1010 transitions. [2023-12-21 02:23:01,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 02:23:01,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:23:01,483 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:23:01,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-21 02:23:01,484 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:23:01,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:23:01,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1545310916, now seen corresponding path program 1 times [2023-12-21 02:23:01,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:23:01,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681658261] [2023-12-21 02:23:01,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:23:01,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:23:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:02,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:23:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:02,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:23:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:02,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:23:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:02,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:23:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:02,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:23:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:02,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:23:02,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:02,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:23:02,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:02,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:23:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:02,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:23:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:02,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:23:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:02,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:23:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:02,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:23:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:02,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:23:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:02,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:23:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:02,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:23:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:02,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:23:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:02,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:23:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:02,072 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:23:02,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:23:02,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681658261] [2023-12-21 02:23:02,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681658261] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:23:02,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:23:02,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 02:23:02,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648557548] [2023-12-21 02:23:02,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:23:02,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 02:23:02,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:23:02,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 02:23:02,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:23:02,074 INFO L87 Difference]: Start difference. First operand 854 states and 1010 transitions. Second operand has 7 states, 6 states have (on average 9.0) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:23:02,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:23:02,391 INFO L93 Difference]: Finished difference Result 920 states and 1087 transitions. [2023-12-21 02:23:02,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 02:23:02,392 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 136 [2023-12-21 02:23:02,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:23:02,394 INFO L225 Difference]: With dead ends: 920 [2023-12-21 02:23:02,394 INFO L226 Difference]: Without dead ends: 918 [2023-12-21 02:23:02,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-21 02:23:02,395 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 72 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:23:02,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 708 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:23:02,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2023-12-21 02:23:02,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 914. [2023-12-21 02:23:02,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 782 states have (on average 1.1342710997442456) internal successors, (887), 789 states have internal predecessors, (887), 96 states have call successors, (96), 35 states have call predecessors, (96), 35 states have return successors, (96), 89 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-21 02:23:02,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1079 transitions. [2023-12-21 02:23:02,454 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1079 transitions. Word has length 136 [2023-12-21 02:23:02,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:23:02,454 INFO L495 AbstractCegarLoop]: Abstraction has 914 states and 1079 transitions. [2023-12-21 02:23:02,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:23:02,454 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1079 transitions. [2023-12-21 02:23:02,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-21 02:23:02,455 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:23:02,455 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:23:02,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-21 02:23:02,455 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:23:02,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:23:02,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1275761781, now seen corresponding path program 1 times [2023-12-21 02:23:02,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:23:02,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630783190] [2023-12-21 02:23:02,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:23:02,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:23:02,469 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:23:02,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1157017993] [2023-12-21 02:23:02,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:23:02,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:23:02,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:23:02,471 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) [2023-12-21 02:23:02,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 02:23:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:02,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 02:23:02,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:23:02,680 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 [2023-12-21 02:23:02,685 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 [2023-12-21 02:23:02,691 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:23:02,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:23:02,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:23:02,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630783190] [2023-12-21 02:23:02,691 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:23:02,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157017993] [2023-12-21 02:23:02,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157017993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:23:02,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:23:02,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 02:23:02,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972086921] [2023-12-21 02:23:02,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:23:02,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 02:23:02,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:23:02,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 02:23:02,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:23:02,693 INFO L87 Difference]: Start difference. First operand 914 states and 1079 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, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:23:02,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:23:02,914 INFO L93 Difference]: Finished difference Result 1769 states and 2088 transitions. [2023-12-21 02:23:02,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 02:23:02,915 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, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 138 [2023-12-21 02:23:02,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:23:02,917 INFO L225 Difference]: With dead ends: 1769 [2023-12-21 02:23:02,917 INFO L226 Difference]: Without dead ends: 877 [2023-12-21 02:23:02,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 02:23:02,919 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 59 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:23:02,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 336 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:23:02,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2023-12-21 02:23:02,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 853. [2023-12-21 02:23:02,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 721 states have (on average 1.1262135922330097) internal successors, (812), 728 states have internal predecessors, (812), 96 states have call successors, (96), 35 states have call predecessors, (96), 35 states have return successors, (96), 89 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-21 02:23:02,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1004 transitions. [2023-12-21 02:23:02,980 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1004 transitions. Word has length 138 [2023-12-21 02:23:02,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:23:02,980 INFO L495 AbstractCegarLoop]: Abstraction has 853 states and 1004 transitions. [2023-12-21 02:23:02,981 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, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:23:02,981 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1004 transitions. [2023-12-21 02:23:02,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 02:23:02,982 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:23:02,982 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:23:02,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 02:23:03,188 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,SelfDestructingSolverStorable31 [2023-12-21 02:23:03,189 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:23:03,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:23:03,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1393736072, now seen corresponding path program 1 times [2023-12-21 02:23:03,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:23:03,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935745039] [2023-12-21 02:23:03,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:23:03,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:23:03,203 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:23:03,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [932465772] [2023-12-21 02:23:03,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:23:03,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:23:03,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:23:03,230 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) [2023-12-21 02:23:03,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 02:23:03,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:03,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-21 02:23:03,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:23:03,753 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:23:03,753 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 42 treesize of output 45 [2023-12-21 02:23:03,783 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:23:03,784 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 55 treesize of output 48 [2023-12-21 02:23:03,794 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:23:03,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 66 [2023-12-21 02:23:03,957 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:23:03,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 119 treesize of output 88 [2023-12-21 02:23:04,379 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:23:04,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 149 treesize of output 49 [2023-12-21 02:23:04,411 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-21 02:23:04,411 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:23:04,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:23:04,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935745039] [2023-12-21 02:23:04,411 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:23:04,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932465772] [2023-12-21 02:23:04,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932465772] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:23:04,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:23:04,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-21 02:23:04,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874454089] [2023-12-21 02:23:04,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:23:04,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 02:23:04,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:23:04,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 02:23:04,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-12-21 02:23:04,413 INFO L87 Difference]: Start difference. First operand 853 states and 1004 transitions. Second operand has 16 states, 15 states have (on average 4.0) internal successors, (60), 16 states have internal predecessors, (60), 2 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:23:12,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:23:12,120 INFO L93 Difference]: Finished difference Result 1909 states and 2234 transitions. [2023-12-21 02:23:12,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-21 02:23:12,121 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 16 states have internal predecessors, (60), 2 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 139 [2023-12-21 02:23:12,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:23:12,123 INFO L225 Difference]: With dead ends: 1909 [2023-12-21 02:23:12,123 INFO L226 Difference]: Without dead ends: 1097 [2023-12-21 02:23:12,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=180, Invalid=750, Unknown=0, NotChecked=0, Total=930 [2023-12-21 02:23:12,125 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 267 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:23:12,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 392 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-12-21 02:23:12,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2023-12-21 02:23:12,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 903. [2023-12-21 02:23:12,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 769 states have (on average 1.1248374512353707) internal successors, (865), 776 states have internal predecessors, (865), 96 states have call successors, (96), 37 states have call predecessors, (96), 37 states have return successors, (96), 89 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-21 02:23:12,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1057 transitions. [2023-12-21 02:23:12,189 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1057 transitions. Word has length 139 [2023-12-21 02:23:12,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:23:12,189 INFO L495 AbstractCegarLoop]: Abstraction has 903 states and 1057 transitions. [2023-12-21 02:23:12,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 16 states have internal predecessors, (60), 2 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:23:12,189 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1057 transitions. [2023-12-21 02:23:12,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 02:23:12,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:23:12,190 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:23:12,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-21 02:23:12,398 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,SelfDestructingSolverStorable32 [2023-12-21 02:23:12,398 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:23:12,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:23:12,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1336477770, now seen corresponding path program 1 times [2023-12-21 02:23:12,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:23:12,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90220403] [2023-12-21 02:23:12,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:23:12,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:23:12,412 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:23:12,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1576355485] [2023-12-21 02:23:12,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:23:12,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:23:12,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:23:12,413 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) [2023-12-21 02:23:12,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-21 02:23:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:12,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-21 02:23:12,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:23:12,604 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 [2023-12-21 02:23:12,631 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:23:12,631 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 64 treesize of output 28 [2023-12-21 02:23:12,651 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 24 proven. 24 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-21 02:23:12,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 02:23:12,751 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:23:12,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:23:12,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90220403] [2023-12-21 02:23:12,752 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:23:12,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576355485] [2023-12-21 02:23:12,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576355485] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 02:23:12,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 02:23:12,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 13 [2023-12-21 02:23:12,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221906773] [2023-12-21 02:23:12,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:23:12,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 02:23:12,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:23:12,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 02:23:12,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-21 02:23:12,753 INFO L87 Difference]: Start difference. First operand 903 states and 1057 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:23:13,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:23:13,121 INFO L93 Difference]: Finished difference Result 1182 states and 1374 transitions. [2023-12-21 02:23:13,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 02:23:13,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2023-12-21 02:23:13,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:23:13,125 INFO L225 Difference]: With dead ends: 1182 [2023-12-21 02:23:13,125 INFO L226 Difference]: Without dead ends: 1180 [2023-12-21 02:23:13,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-12-21 02:23:13,126 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 73 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:23:13,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 721 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:23:13,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2023-12-21 02:23:13,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1176. [2023-12-21 02:23:13,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 992 states have (on average 1.1108870967741935) internal successors, (1102), 1003 states have internal predecessors, (1102), 132 states have call successors, (132), 51 states have call predecessors, (132), 51 states have return successors, (132), 121 states have call predecessors, (132), 132 states have call successors, (132) [2023-12-21 02:23:13,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1366 transitions. [2023-12-21 02:23:13,222 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1366 transitions. Word has length 139 [2023-12-21 02:23:13,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:23:13,223 INFO L495 AbstractCegarLoop]: Abstraction has 1176 states and 1366 transitions. [2023-12-21 02:23:13,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:23:13,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1366 transitions. [2023-12-21 02:23:13,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 02:23:13,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:23:13,224 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:23:13,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-21 02:23:13,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:23:13,431 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:23:13,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:23:13,431 INFO L85 PathProgramCache]: Analyzing trace with hash 381271290, now seen corresponding path program 1 times [2023-12-21 02:23:13,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:23:13,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782570374] [2023-12-21 02:23:13,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:23:13,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:23:13,443 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:23:13,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1086259540] [2023-12-21 02:23:13,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:23:13,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:23:13,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:23:13,445 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) [2023-12-21 02:23:13,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-21 02:23:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:13,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 02:23:13,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:23:13,676 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:23:13,676 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 [2023-12-21 02:23:13,716 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:23:13,716 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 63 treesize of output 37 [2023-12-21 02:23:13,847 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:23:13,848 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 69 treesize of output 21 [2023-12-21 02:23:13,860 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:23:13,860 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:23:13,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:23:13,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782570374] [2023-12-21 02:23:13,860 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:23:13,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086259540] [2023-12-21 02:23:13,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086259540] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:23:13,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:23:13,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 02:23:13,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567498582] [2023-12-21 02:23:13,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:23:13,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 02:23:13,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:23:13,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 02:23:13,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-21 02:23:13,861 INFO L87 Difference]: Start difference. First operand 1176 states and 1366 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:23:14,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:23:14,446 INFO L93 Difference]: Finished difference Result 2497 states and 2891 transitions. [2023-12-21 02:23:14,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 02:23:14,446 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2023-12-21 02:23:14,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:23:14,449 INFO L225 Difference]: With dead ends: 2497 [2023-12-21 02:23:14,449 INFO L226 Difference]: Without dead ends: 1362 [2023-12-21 02:23:14,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-12-21 02:23:14,451 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 104 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:23:14,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 438 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:23:14,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2023-12-21 02:23:14,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1264. [2023-12-21 02:23:14,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1080 states have (on average 1.1027777777777779) internal successors, (1191), 1091 states have internal predecessors, (1191), 132 states have call successors, (132), 51 states have call predecessors, (132), 51 states have return successors, (132), 121 states have call predecessors, (132), 132 states have call successors, (132) [2023-12-21 02:23:14,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 1455 transitions. [2023-12-21 02:23:14,536 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 1455 transitions. Word has length 139 [2023-12-21 02:23:14,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:23:14,536 INFO L495 AbstractCegarLoop]: Abstraction has 1264 states and 1455 transitions. [2023-12-21 02:23:14,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:23:14,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 1455 transitions. [2023-12-21 02:23:14,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 02:23:14,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:23:14,538 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:23:14,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-21 02:23:14,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:23:14,745 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:23:14,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:23:14,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1259722566, now seen corresponding path program 1 times [2023-12-21 02:23:14,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:23:14,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697414414] [2023-12-21 02:23:14,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:23:14,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:23:14,759 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:23:14,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [510617473] [2023-12-21 02:23:14,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:23:14,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:23:14,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:23:14,761 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) [2023-12-21 02:23:14,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-21 02:23:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:15,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-21 02:23:15,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:23:15,049 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 [2023-12-21 02:23:15,059 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:23:15,060 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 [2023-12-21 02:23:15,098 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:23:15,099 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 98 treesize of output 44 [2023-12-21 02:23:15,122 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 24 proven. 24 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-21 02:23:15,122 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 02:23:15,258 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:23:15,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:23:15,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697414414] [2023-12-21 02:23:15,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:23:15,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510617473] [2023-12-21 02:23:15,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510617473] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 02:23:15,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 02:23:15,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 13 [2023-12-21 02:23:15,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935056738] [2023-12-21 02:23:15,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:23:15,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 02:23:15,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:23:15,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 02:23:15,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-21 02:23:15,260 INFO L87 Difference]: Start difference. First operand 1264 states and 1455 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:23:15,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:23:15,653 INFO L93 Difference]: Finished difference Result 1298 states and 1491 transitions. [2023-12-21 02:23:15,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 02:23:15,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2023-12-21 02:23:15,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:23:15,657 INFO L225 Difference]: With dead ends: 1298 [2023-12-21 02:23:15,657 INFO L226 Difference]: Without dead ends: 1296 [2023-12-21 02:23:15,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-12-21 02:23:15,658 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 67 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:23:15,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 813 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:23:15,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2023-12-21 02:23:15,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1076. [2023-12-21 02:23:15,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 958 states have (on average 1.1116910229645094) internal successors, (1065), 964 states have internal predecessors, (1065), 84 states have call successors, (84), 33 states have call predecessors, (84), 33 states have return successors, (84), 78 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-21 02:23:15,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1233 transitions. [2023-12-21 02:23:15,720 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1233 transitions. Word has length 139 [2023-12-21 02:23:15,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:23:15,721 INFO L495 AbstractCegarLoop]: Abstraction has 1076 states and 1233 transitions. [2023-12-21 02:23:15,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:23:15,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1233 transitions. [2023-12-21 02:23:15,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 02:23:15,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:23:15,722 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:23:15,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-21 02:23:15,931 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,SelfDestructingSolverStorable35 [2023-12-21 02:23:15,932 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:23:15,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:23:15,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1202464264, now seen corresponding path program 1 times [2023-12-21 02:23:15,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:23:15,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173880558] [2023-12-21 02:23:15,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:23:15,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:23:15,947 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:23:15,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [674483607] [2023-12-21 02:23:15,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:23:15,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:23:15,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:23:15,957 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) [2023-12-21 02:23:15,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-21 02:23:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:17,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-21 02:23:17,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:23:18,007 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:23:18,007 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 28 treesize of output 10 [2023-12-21 02:23:18,048 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:23:18,048 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 42 treesize of output 45 [2023-12-21 02:23:18,076 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:23:18,076 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 55 treesize of output 48 [2023-12-21 02:23:18,093 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:23:18,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 66 [2023-12-21 02:23:18,215 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:23:18,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 137 treesize of output 103 [2023-12-21 02:23:23,981 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:23:23,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 184 treesize of output 62 [2023-12-21 02:23:24,427 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-21 02:23:24,427 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:23:24,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:23:24,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173880558] [2023-12-21 02:23:24,427 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:23:24,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674483607] [2023-12-21 02:23:24,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674483607] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:23:24,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:23:24,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-21 02:23:24,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129234806] [2023-12-21 02:23:24,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:23:24,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 02:23:24,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:23:24,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 02:23:24,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-12-21 02:23:24,429 INFO L87 Difference]: Start difference. First operand 1076 states and 1233 transitions. Second operand has 16 states, 15 states have (on average 4.0) internal successors, (60), 16 states have internal predecessors, (60), 2 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:23:31,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:23:31,856 INFO L93 Difference]: Finished difference Result 2349 states and 2687 transitions. [2023-12-21 02:23:31,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-21 02:23:31,857 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 16 states have internal predecessors, (60), 2 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 139 [2023-12-21 02:23:31,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:23:31,860 INFO L225 Difference]: With dead ends: 2349 [2023-12-21 02:23:31,860 INFO L226 Difference]: Without dead ends: 1274 [2023-12-21 02:23:31,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=180, Invalid=750, Unknown=0, NotChecked=0, Total=930 [2023-12-21 02:23:31,862 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 274 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:23:31,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 430 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-21 02:23:31,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2023-12-21 02:23:31,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1078. [2023-12-21 02:23:31,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 960 states have (on average 1.1114583333333334) internal successors, (1067), 966 states have internal predecessors, (1067), 84 states have call successors, (84), 33 states have call predecessors, (84), 33 states have return successors, (84), 78 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-21 02:23:31,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1235 transitions. [2023-12-21 02:23:31,926 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1235 transitions. Word has length 139 [2023-12-21 02:23:31,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:23:31,926 INFO L495 AbstractCegarLoop]: Abstraction has 1078 states and 1235 transitions. [2023-12-21 02:23:31,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 16 states have internal predecessors, (60), 2 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:23:31,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1235 transitions. [2023-12-21 02:23:31,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 02:23:31,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:23:31,928 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:23:31,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-21 02:23:32,137 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,SelfDestructingSolverStorable36 [2023-12-21 02:23:32,137 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:23:32,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:23:32,137 INFO L85 PathProgramCache]: Analyzing trace with hash 529491962, now seen corresponding path program 1 times [2023-12-21 02:23:32,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:23:32,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230616927] [2023-12-21 02:23:32,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:23:32,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:23:32,152 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:23:32,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [527122887] [2023-12-21 02:23:32,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:23:32,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:23:32,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:23:32,153 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) [2023-12-21 02:23:32,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-21 02:23:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:32,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 02:23:32,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:23:32,382 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:23:32,382 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 [2023-12-21 02:23:32,425 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:23:32,425 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 62 treesize of output 36 [2023-12-21 02:23:32,543 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:23:32,544 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 68 treesize of output 20 [2023-12-21 02:23:32,555 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:23:32,555 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:23:32,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:23:32,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230616927] [2023-12-21 02:23:32,555 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:23:32,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527122887] [2023-12-21 02:23:32,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527122887] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:23:32,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:23:32,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 02:23:32,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73035873] [2023-12-21 02:23:32,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:23:32,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 02:23:32,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:23:32,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 02:23:32,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-21 02:23:32,557 INFO L87 Difference]: Start difference. First operand 1078 states and 1235 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:23:33,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:23:33,124 INFO L93 Difference]: Finished difference Result 2232 states and 2553 transitions. [2023-12-21 02:23:33,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 02:23:33,124 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2023-12-21 02:23:33,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:23:33,141 INFO L225 Difference]: With dead ends: 2232 [2023-12-21 02:23:33,141 INFO L226 Difference]: Without dead ends: 1155 [2023-12-21 02:23:33,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-12-21 02:23:33,143 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 163 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:23:33,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 327 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:23:33,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2023-12-21 02:23:33,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1078. [2023-12-21 02:23:33,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 960 states have (on average 1.1052083333333333) internal successors, (1061), 966 states have internal predecessors, (1061), 84 states have call successors, (84), 33 states have call predecessors, (84), 33 states have return successors, (84), 78 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-21 02:23:33,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1229 transitions. [2023-12-21 02:23:33,211 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1229 transitions. Word has length 139 [2023-12-21 02:23:33,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:23:33,211 INFO L495 AbstractCegarLoop]: Abstraction has 1078 states and 1229 transitions. [2023-12-21 02:23:33,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:23:33,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1229 transitions. [2023-12-21 02:23:33,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 02:23:33,213 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:23:33,213 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:23:33,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-21 02:23:33,419 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,SelfDestructingSolverStorable37 [2023-12-21 02:23:33,420 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:23:33,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:23:33,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1990467972, now seen corresponding path program 1 times [2023-12-21 02:23:33,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:23:33,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880411899] [2023-12-21 02:23:33,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:23:33,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:23:33,433 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:23:33,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1964496591] [2023-12-21 02:23:33,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:23:33,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:23:33,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:23:33,439 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) [2023-12-21 02:23:33,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-21 02:23:33,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:33,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-21 02:23:33,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:23:33,982 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:23:33,982 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 42 treesize of output 45 [2023-12-21 02:23:34,005 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:23:34,008 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 55 treesize of output 48 [2023-12-21 02:23:34,019 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:23:34,020 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 51 treesize of output 48 [2023-12-21 02:23:34,110 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:23:34,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 86 treesize of output 70 [2023-12-21 02:23:35,144 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:23:35,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 92 treesize of output 36 [2023-12-21 02:23:35,547 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-21 02:23:35,547 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:23:35,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:23:35,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880411899] [2023-12-21 02:23:35,547 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:23:35,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964496591] [2023-12-21 02:23:35,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964496591] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:23:35,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:23:35,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 02:23:35,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279169756] [2023-12-21 02:23:35,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:23:35,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 02:23:35,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:23:35,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 02:23:35,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-12-21 02:23:35,549 INFO L87 Difference]: Start difference. First operand 1078 states and 1229 transitions. Second operand has 13 states, 12 states have (on average 5.0) internal successors, (60), 13 states have internal predecessors, (60), 2 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:23:45,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:23:45,280 INFO L93 Difference]: Finished difference Result 2493 states and 2832 transitions. [2023-12-21 02:23:45,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 02:23:45,280 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.0) internal successors, (60), 13 states have internal predecessors, (60), 2 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 139 [2023-12-21 02:23:45,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:23:45,283 INFO L225 Difference]: With dead ends: 2493 [2023-12-21 02:23:45,283 INFO L226 Difference]: Without dead ends: 1416 [2023-12-21 02:23:45,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-12-21 02:23:45,285 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 227 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-12-21 02:23:45,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 416 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-12-21 02:23:45,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2023-12-21 02:23:45,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1156. [2023-12-21 02:23:45,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1038 states have (on average 1.1040462427745665) internal successors, (1146), 1044 states have internal predecessors, (1146), 84 states have call successors, (84), 33 states have call predecessors, (84), 33 states have return successors, (84), 78 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-21 02:23:45,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1314 transitions. [2023-12-21 02:23:45,363 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1314 transitions. Word has length 139 [2023-12-21 02:23:45,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:23:45,363 INFO L495 AbstractCegarLoop]: Abstraction has 1156 states and 1314 transitions. [2023-12-21 02:23:45,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.0) internal successors, (60), 13 states have internal predecessors, (60), 2 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:23:45,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1314 transitions. [2023-12-21 02:23:45,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 02:23:45,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:23:45,365 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:23:45,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-21 02:23:45,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:23:45,589 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:23:45,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:23:45,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1799196164, now seen corresponding path program 1 times [2023-12-21 02:23:45,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:23:45,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418294805] [2023-12-21 02:23:45,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:23:45,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:23:45,602 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:23:45,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [602382400] [2023-12-21 02:23:45,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:23:45,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:23:45,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:23:45,604 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) [2023-12-21 02:23:45,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-21 02:23:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:23:46,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-21 02:23:46,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:23:46,389 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:23:46,390 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 42 treesize of output 45 [2023-12-21 02:23:46,410 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:23:46,411 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 55 treesize of output 48 [2023-12-21 02:23:46,420 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:23:46,420 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 51 treesize of output 48 [2023-12-21 02:23:46,494 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:23:46,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 99 treesize of output 84 [2023-12-21 02:23:51,774 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:23:51,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 147 treesize of output 55 [2023-12-21 02:23:52,978 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-21 02:23:52,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:23:52,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:23:52,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418294805] [2023-12-21 02:23:52,979 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:23:52,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602382400] [2023-12-21 02:23:52,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602382400] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:23:52,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:23:52,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 02:23:52,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692742287] [2023-12-21 02:23:52,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:23:52,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 02:23:52,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:23:52,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 02:23:52,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-12-21 02:23:52,984 INFO L87 Difference]: Start difference. First operand 1156 states and 1314 transitions. Second operand has 13 states, 12 states have (on average 5.0) internal successors, (60), 13 states have internal predecessors, (60), 2 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:24:01,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:24:01,267 INFO L93 Difference]: Finished difference Result 2617 states and 2962 transitions. [2023-12-21 02:24:01,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 02:24:01,268 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.0) internal successors, (60), 13 states have internal predecessors, (60), 2 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 139 [2023-12-21 02:24:01,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:24:01,270 INFO L225 Difference]: With dead ends: 2617 [2023-12-21 02:24:01,270 INFO L226 Difference]: Without dead ends: 1462 [2023-12-21 02:24:01,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-12-21 02:24:01,272 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 218 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-21 02:24:01,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 444 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-21 02:24:01,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2023-12-21 02:24:01,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1208. [2023-12-21 02:24:01,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 1090 states have (on average 1.0981651376146788) internal successors, (1197), 1096 states have internal predecessors, (1197), 84 states have call successors, (84), 33 states have call predecessors, (84), 33 states have return successors, (84), 78 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-21 02:24:01,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1365 transitions. [2023-12-21 02:24:01,339 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1365 transitions. Word has length 139 [2023-12-21 02:24:01,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:24:01,339 INFO L495 AbstractCegarLoop]: Abstraction has 1208 states and 1365 transitions. [2023-12-21 02:24:01,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.0) internal successors, (60), 13 states have internal predecessors, (60), 2 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:24:01,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1365 transitions. [2023-12-21 02:24:01,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 02:24:01,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:24:01,341 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:24:01,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-21 02:24:01,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-21 02:24:01,550 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:24:01,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:24:01,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1100199199, now seen corresponding path program 1 times [2023-12-21 02:24:01,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:24:01,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922612433] [2023-12-21 02:24:01,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:24:01,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:24:01,565 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:24:01,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1693997862] [2023-12-21 02:24:01,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:24:01,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:24:01,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:24:01,567 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) [2023-12-21 02:24:01,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-21 02:24:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:24:01,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 02:24:01,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:24:01,818 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 [2023-12-21 02:24:01,823 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:24:01,823 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:24:01,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:24:01,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922612433] [2023-12-21 02:24:01,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:24:01,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693997862] [2023-12-21 02:24:01,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693997862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:24:01,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:24:01,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 02:24:01,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475251367] [2023-12-21 02:24:01,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:24:01,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 02:24:01,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:24:01,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 02:24:01,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:24:01,824 INFO L87 Difference]: Start difference. First operand 1208 states and 1365 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:24:02,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:24:02,108 INFO L93 Difference]: Finished difference Result 2467 states and 2777 transitions. [2023-12-21 02:24:02,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:24:02,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2023-12-21 02:24:02,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:24:02,111 INFO L225 Difference]: With dead ends: 2467 [2023-12-21 02:24:02,111 INFO L226 Difference]: Without dead ends: 1260 [2023-12-21 02:24:02,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 02:24:02,113 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 65 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:24:02,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 313 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:24:02,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2023-12-21 02:24:02,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1130. [2023-12-21 02:24:02,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1012 states have (on average 1.0899209486166008) internal successors, (1103), 1018 states have internal predecessors, (1103), 84 states have call successors, (84), 33 states have call predecessors, (84), 33 states have return successors, (84), 78 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-21 02:24:02,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1271 transitions. [2023-12-21 02:24:02,192 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1271 transitions. Word has length 139 [2023-12-21 02:24:02,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:24:02,192 INFO L495 AbstractCegarLoop]: Abstraction has 1130 states and 1271 transitions. [2023-12-21 02:24:02,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:24:02,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1271 transitions. [2023-12-21 02:24:02,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-21 02:24:02,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:24:02,194 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:24:02,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-21 02:24:02,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:24:02,400 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:24:02,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:24:02,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1986267432, now seen corresponding path program 1 times [2023-12-21 02:24:02,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:24:02,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226756931] [2023-12-21 02:24:02,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:24:02,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:24:02,418 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:24:02,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [842071889] [2023-12-21 02:24:02,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:24:02,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:24:02,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:24:02,420 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) [2023-12-21 02:24:02,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-21 02:24:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:24:03,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-21 02:24:03,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:24:03,133 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:24:03,133 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 28 treesize of output 10 [2023-12-21 02:24:03,179 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:24:03,180 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 42 treesize of output 45 [2023-12-21 02:24:03,210 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:24:03,210 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 55 treesize of output 48 [2023-12-21 02:24:03,230 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:24:03,230 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 51 treesize of output 48 [2023-12-21 02:24:03,342 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:24:03,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 98 treesize of output 76 [2023-12-21 02:24:04,938 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:24:04,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 114 treesize of output 42 [2023-12-21 02:24:05,182 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-21 02:24:05,183 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:24:05,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:24:05,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226756931] [2023-12-21 02:24:05,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:24:05,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842071889] [2023-12-21 02:24:05,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842071889] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:24:05,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:24:05,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 02:24:05,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658625296] [2023-12-21 02:24:05,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:24:05,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 02:24:05,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:24:05,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 02:24:05,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-12-21 02:24:05,184 INFO L87 Difference]: Start difference. First operand 1130 states and 1271 transitions. Second operand has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 13 states have internal predecessors, (64), 2 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:24:13,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:24:13,120 INFO L93 Difference]: Finished difference Result 2473 states and 2768 transitions. [2023-12-21 02:24:13,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 02:24:13,121 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 13 states have internal predecessors, (64), 2 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 143 [2023-12-21 02:24:13,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:24:13,122 INFO L225 Difference]: With dead ends: 2473 [2023-12-21 02:24:13,123 INFO L226 Difference]: Without dead ends: 1344 [2023-12-21 02:24:13,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-12-21 02:24:13,124 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 166 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:24:13,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 379 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-12-21 02:24:13,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2023-12-21 02:24:13,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 1130. [2023-12-21 02:24:13,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1012 states have (on average 1.0899209486166008) internal successors, (1103), 1018 states have internal predecessors, (1103), 84 states have call successors, (84), 33 states have call predecessors, (84), 33 states have return successors, (84), 78 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-21 02:24:13,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1271 transitions. [2023-12-21 02:24:13,193 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1271 transitions. Word has length 143 [2023-12-21 02:24:13,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:24:13,193 INFO L495 AbstractCegarLoop]: Abstraction has 1130 states and 1271 transitions. [2023-12-21 02:24:13,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 13 states have internal predecessors, (64), 2 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:24:13,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1271 transitions. [2023-12-21 02:24:13,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-21 02:24:13,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:24:13,195 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:24:13,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-21 02:24:13,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:24:13,403 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:24:13,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:24:13,404 INFO L85 PathProgramCache]: Analyzing trace with hash -211260070, now seen corresponding path program 1 times [2023-12-21 02:24:13,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:24:13,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008183677] [2023-12-21 02:24:13,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:24:13,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:24:13,417 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:24:13,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [121822827] [2023-12-21 02:24:13,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:24:13,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:24:13,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:24:13,432 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) [2023-12-21 02:24:13,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-21 02:24:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:24:13,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 02:24:13,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:24:13,691 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:24:13,691 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 42 treesize of output 32 [2023-12-21 02:24:13,719 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:24:13,719 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 48 treesize of output 16 [2023-12-21 02:24:13,726 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:24:13,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:24:13,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:24:13,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008183677] [2023-12-21 02:24:13,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:24:13,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121822827] [2023-12-21 02:24:13,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121822827] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:24:13,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:24:13,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 02:24:13,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504654626] [2023-12-21 02:24:13,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:24:13,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 02:24:13,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:24:13,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 02:24:13,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:24:13,729 INFO L87 Difference]: Start difference. First operand 1130 states and 1271 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:24:14,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:24:14,150 INFO L93 Difference]: Finished difference Result 2558 states and 2851 transitions. [2023-12-21 02:24:14,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:24:14,150 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 143 [2023-12-21 02:24:14,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:24:14,152 INFO L225 Difference]: With dead ends: 2558 [2023-12-21 02:24:14,152 INFO L226 Difference]: Without dead ends: 1429 [2023-12-21 02:24:14,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:24:14,154 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 40 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:24:14,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 323 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:24:14,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2023-12-21 02:24:14,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 1130. [2023-12-21 02:24:14,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1012 states have (on average 1.0859683794466404) internal successors, (1099), 1018 states have internal predecessors, (1099), 84 states have call successors, (84), 33 states have call predecessors, (84), 33 states have return successors, (84), 78 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-21 02:24:14,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1267 transitions. [2023-12-21 02:24:14,223 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1267 transitions. Word has length 143 [2023-12-21 02:24:14,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:24:14,223 INFO L495 AbstractCegarLoop]: Abstraction has 1130 states and 1267 transitions. [2023-12-21 02:24:14,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:24:14,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1267 transitions. [2023-12-21 02:24:14,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-21 02:24:14,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:24:14,225 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:24:14,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-21 02:24:14,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:24:14,431 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:24:14,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:24:14,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1991048744, now seen corresponding path program 1 times [2023-12-21 02:24:14,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:24:14,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592669260] [2023-12-21 02:24:14,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:24:14,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:24:14,445 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:24:14,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2000010502] [2023-12-21 02:24:14,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:24:14,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:24:14,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:24:14,447 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) [2023-12-21 02:24:14,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-21 02:24:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:24:23,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-21 02:24:23,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:24:23,315 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:24:23,316 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 42 treesize of output 45 [2023-12-21 02:24:23,339 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:24:23,339 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 55 treesize of output 48 [2023-12-21 02:24:23,396 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:24:23,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 70 treesize of output 77 [2023-12-21 02:24:23,540 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:24:23,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 140 treesize of output 113 [2023-12-21 02:24:30,934 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:24:30,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 183 treesize of output 59 [2023-12-21 02:24:31,743 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-21 02:24:31,743 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:24:31,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:24:31,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592669260] [2023-12-21 02:24:31,743 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:24:31,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000010502] [2023-12-21 02:24:31,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000010502] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:24:31,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:24:31,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-21 02:24:31,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506844749] [2023-12-21 02:24:31,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:24:31,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 02:24:31,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:24:31,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 02:24:31,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2023-12-21 02:24:31,745 INFO L87 Difference]: Start difference. First operand 1130 states and 1267 transitions. Second operand has 20 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 20 states have internal predecessors, (64), 2 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:24:38,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:24:38,346 INFO L93 Difference]: Finished difference Result 2648 states and 2941 transitions. [2023-12-21 02:24:38,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-21 02:24:38,347 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 20 states have internal predecessors, (64), 2 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 143 [2023-12-21 02:24:38,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:24:38,349 INFO L225 Difference]: With dead ends: 2648 [2023-12-21 02:24:38,349 INFO L226 Difference]: Without dead ends: 1519 [2023-12-21 02:24:38,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=171, Invalid=821, Unknown=0, NotChecked=0, Total=992 [2023-12-21 02:24:38,352 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 262 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-21 02:24:38,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 609 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-21 02:24:38,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2023-12-21 02:24:38,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1172. [2023-12-21 02:24:38,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1054 states have (on average 1.0834914611005693) internal successors, (1142), 1060 states have internal predecessors, (1142), 84 states have call successors, (84), 33 states have call predecessors, (84), 33 states have return successors, (84), 78 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-21 02:24:38,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1310 transitions. [2023-12-21 02:24:38,486 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1310 transitions. Word has length 143 [2023-12-21 02:24:38,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:24:38,486 INFO L495 AbstractCegarLoop]: Abstraction has 1172 states and 1310 transitions. [2023-12-21 02:24:38,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 20 states have internal predecessors, (64), 2 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:24:38,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1310 transitions. [2023-12-21 02:24:38,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-21 02:24:38,501 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:24:38,510 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:24:38,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-21 02:24:38,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:24:38,710 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:24:38,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:24:38,711 INFO L85 PathProgramCache]: Analyzing trace with hash -600064038, now seen corresponding path program 1 times [2023-12-21 02:24:38,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:24:38,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434002622] [2023-12-21 02:24:38,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:24:38,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:24:38,726 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:24:38,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1353767349] [2023-12-21 02:24:38,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:24:38,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:24:38,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:24:38,728 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) [2023-12-21 02:24:38,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-21 02:24:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:24:38,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 02:24:38,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:24:38,990 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:24:38,991 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 41 treesize of output 31 [2023-12-21 02:24:39,021 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:24:39,022 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 47 treesize of output 15 [2023-12-21 02:24:39,028 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:24:39,028 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:24:39,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:24:39,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434002622] [2023-12-21 02:24:39,028 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:24:39,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353767349] [2023-12-21 02:24:39,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353767349] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:24:39,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:24:39,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 02:24:39,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413536021] [2023-12-21 02:24:39,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:24:39,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 02:24:39,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:24:39,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 02:24:39,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:24:39,029 INFO L87 Difference]: Start difference. First operand 1172 states and 1310 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:24:39,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:24:39,351 INFO L93 Difference]: Finished difference Result 2624 states and 2906 transitions. [2023-12-21 02:24:39,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:24:39,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 143 [2023-12-21 02:24:39,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:24:39,354 INFO L225 Difference]: With dead ends: 2624 [2023-12-21 02:24:39,354 INFO L226 Difference]: Without dead ends: 1453 [2023-12-21 02:24:39,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:24:39,355 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 34 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:24:39,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 381 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:24:39,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2023-12-21 02:24:39,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1170. [2023-12-21 02:24:39,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 1052 states have (on average 1.0779467680608366) internal successors, (1134), 1058 states have internal predecessors, (1134), 84 states have call successors, (84), 33 states have call predecessors, (84), 33 states have return successors, (84), 78 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-21 02:24:39,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1302 transitions. [2023-12-21 02:24:39,425 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1302 transitions. Word has length 143 [2023-12-21 02:24:39,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:24:39,425 INFO L495 AbstractCegarLoop]: Abstraction has 1170 states and 1302 transitions. [2023-12-21 02:24:39,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:24:39,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1302 transitions. [2023-12-21 02:24:39,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-21 02:24:39,427 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:24:39,427 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:24:39,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-21 02:24:39,634 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,SelfDestructingSolverStorable44 [2023-12-21 02:24:39,634 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:24:39,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:24:39,634 INFO L85 PathProgramCache]: Analyzing trace with hash 773239832, now seen corresponding path program 1 times [2023-12-21 02:24:39,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:24:39,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879459937] [2023-12-21 02:24:39,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:24:39,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:24:39,647 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:24:39,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [871497840] [2023-12-21 02:24:39,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:24:39,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:24:39,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:24:39,664 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) [2023-12-21 02:24:39,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-21 02:24:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:24:42,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-21 02:24:42,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:24:42,657 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:24:42,658 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 37 treesize of output 13 [2023-12-21 02:24:42,660 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 19 treesize of output 1 [2023-12-21 02:24:42,661 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 19 treesize of output 1 [2023-12-21 02:24:42,663 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 19 treesize of output 1 [2023-12-21 02:24:42,664 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 19 treesize of output 1 [2023-12-21 02:24:42,667 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 19 treesize of output 1 [2023-12-21 02:24:42,690 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:24:42,690 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 42 treesize of output 45 [2023-12-21 02:24:42,716 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:24:42,716 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 55 treesize of output 48 [2023-12-21 02:24:42,734 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:24:42,734 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 51 treesize of output 48 [2023-12-21 02:24:42,823 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:24:42,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 111 treesize of output 90 [2023-12-21 02:24:46,865 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:24:46,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 147 treesize of output 51 [2023-12-21 02:24:47,274 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-21 02:24:47,275 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:24:47,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:24:47,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879459937] [2023-12-21 02:24:47,275 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:24:47,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871497840] [2023-12-21 02:24:47,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871497840] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:24:47,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:24:47,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 02:24:47,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475941311] [2023-12-21 02:24:47,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:24:47,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 02:24:47,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:24:47,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 02:24:47,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-12-21 02:24:47,276 INFO L87 Difference]: Start difference. First operand 1170 states and 1302 transitions. Second operand has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 13 states have internal predecessors, (64), 2 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:24:52,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:24:52,336 INFO L93 Difference]: Finished difference Result 2531 states and 2802 transitions. [2023-12-21 02:24:52,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 02:24:52,337 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 13 states have internal predecessors, (64), 2 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 143 [2023-12-21 02:24:52,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:24:52,337 INFO L225 Difference]: With dead ends: 2531 [2023-12-21 02:24:52,337 INFO L226 Difference]: Without dead ends: 0 [2023-12-21 02:24:52,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-12-21 02:24:52,340 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 200 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-21 02:24:52,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 384 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-21 02:24:52,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-21 02:24:52,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-21 02:24:52,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 02:24:52,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-21 02:24:52,340 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 143 [2023-12-21 02:24:52,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:24:52,341 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-21 02:24:52,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 13 states have internal predecessors, (64), 2 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:24:52,341 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-21 02:24:52,341 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-21 02:24:52,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 02:24:52,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-21 02:24:52,549 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,SelfDestructingSolverStorable45 [2023-12-21 02:24:52,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-21 02:36:54,557 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-16-5-3-4-3-4-3-5-2-5-3-6-5-7-8-7-10-7-10-7-10-7-9-5-9-5-9-5-9-4-8-4-7-4-6-4-4-4-3-4-3-4-3-3-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-51-5-8-7-8-7-8-7-8-7-9-7-9-7-9-7-10-7-10-7-10-7-9-5-9-5-9-5-9-4-8-4-7-4-6-4-4-4-3-4-3-4-3-3-1 context. [2023-12-21 02:36:54,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-21 02:36:54,562 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-21 02:36:54,563 INFO L158 Benchmark]: Toolchain (without parser) took 863431.01ms. Allocated memory was 223.3MB in the beginning and 873.5MB in the end (delta: 650.1MB). Free memory was 157.5MB in the beginning and 807.1MB in the end (delta: -649.6MB). Peak memory consumption was 1.5MB. Max. memory is 8.0GB. [2023-12-21 02:36:54,563 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 223.3MB. Free memory is still 173.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 02:36:54,564 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.19ms. Allocated memory is still 223.3MB. Free memory was 157.5MB in the beginning and 142.2MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-21 02:36:54,564 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.23ms. Allocated memory is still 223.3MB. Free memory was 142.2MB in the beginning and 138.6MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-21 02:36:54,564 INFO L158 Benchmark]: Boogie Preprocessor took 50.82ms. Allocated memory is still 223.3MB. Free memory was 138.6MB in the beginning and 134.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-21 02:36:54,564 INFO L158 Benchmark]: RCFGBuilder took 504.59ms. Allocated memory is still 223.3MB. Free memory was 134.4MB in the beginning and 105.7MB in the end (delta: 28.7MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2023-12-21 02:36:54,564 INFO L158 Benchmark]: TraceAbstraction took 862552.94ms. Allocated memory was 282.1MB in the beginning and 873.5MB in the end (delta: 591.4MB). Free memory was 247.1MB in the beginning and 807.1MB in the end (delta: -560.0MB). Peak memory consumption was 31.9MB. Max. memory is 8.0GB. [2023-12-21 02:36:54,565 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 223.3MB. Free memory is still 173.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 222.19ms. Allocated memory is still 223.3MB. Free memory was 157.5MB in the beginning and 142.2MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 66.23ms. Allocated memory is still 223.3MB. Free memory was 142.2MB in the beginning and 138.6MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 50.82ms. Allocated memory is still 223.3MB. Free memory was 138.6MB in the beginning and 134.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 504.59ms. Allocated memory is still 223.3MB. Free memory was 134.4MB in the beginning and 105.7MB in the end (delta: 28.7MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. * TraceAbstraction took 862552.94ms. Allocated memory was 282.1MB in the beginning and 873.5MB in the end (delta: 591.4MB). Free memory was 247.1MB in the beginning and 807.1MB in the end (delta: -560.0MB). Peak memory consumption was 31.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) [2023-12-21 02:36:54,569 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 Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-4-3-2-4-5-4-4-3-4-3-3-3-3-3-3-3-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-15-4-3-4-5-4-4-3-4-3-3-3-3-3-3-3-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown