/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_fillercode_fillercodesize_ps-cn-500_file-0.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 02:56:25,425 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 02:56:25,474 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 02:56:25,481 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 02:56:25,482 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 02:56:25,512 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 02:56:25,512 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 02:56:25,513 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 02:56:25,513 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 02:56:25,514 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 02:56:25,514 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 02:56:25,514 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 02:56:25,515 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 02:56:25,515 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 02:56:25,515 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 02:56:25,516 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 02:56:25,516 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 02:56:25,516 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 02:56:25,516 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 02:56:25,517 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 02:56:25,517 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 02:56:25,519 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 02:56:25,519 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 02:56:25,519 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 02:56:25,519 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 02:56:25,519 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 02:56:25,519 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 02:56:25,520 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 02:56:25,520 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 02:56:25,520 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 02:56:25,520 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 02:56:25,521 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 02:56:25,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:56:25,521 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 02:56:25,521 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 02:56:25,521 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 02:56:25,522 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 02:56:25,522 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 02:56:25,522 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 02:56:25,522 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 02:56:25,522 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 02:56:25,524 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 02:56:25,524 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 02:56:25,524 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 02:56:25,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 02:56:25,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 02:56:25,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 02:56:25,767 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 02:56:25,767 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 02:56:25,768 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-0.i [2023-12-16 02:56:26,893 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 02:56:27,103 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 02:56:27,104 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-0.i [2023-12-16 02:56:27,130 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/daedb6e21/e4574d5966444305b6751cb46ef37f25/FLAGa344bf339 [2023-12-16 02:56:27,142 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/daedb6e21/e4574d5966444305b6751cb46ef37f25 [2023-12-16 02:56:27,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 02:56:27,145 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 02:56:27,146 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 02:56:27,146 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 02:56:27,149 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 02:56:27,150 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:56:27" (1/1) ... [2023-12-16 02:56:27,151 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@361e3306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:56:27, skipping insertion in model container [2023-12-16 02:56:27,151 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:56:27" (1/1) ... [2023-12-16 02:56:27,204 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 02:56:27,331 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-0.i[915,928] [2023-12-16 02:56:27,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:56:27,516 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 02:56:27,524 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-0.i[915,928] [2023-12-16 02:56:27,587 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:56:27,600 INFO L206 MainTranslator]: Completed translation [2023-12-16 02:56:27,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:56:27 WrapperNode [2023-12-16 02:56:27,601 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 02:56:27,602 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 02:56:27,602 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 02:56:27,602 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 02:56:27,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:56:27" (1/1) ... [2023-12-16 02:56:27,621 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:56:27" (1/1) ... [2023-12-16 02:56:27,683 INFO L138 Inliner]: procedures = 26, calls = 92, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 635 [2023-12-16 02:56:27,683 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 02:56:27,684 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 02:56:27,684 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 02:56:27,684 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 02:56:27,699 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:56:27" (1/1) ... [2023-12-16 02:56:27,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:56:27" (1/1) ... [2023-12-16 02:56:27,705 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:56:27" (1/1) ... [2023-12-16 02:56:27,745 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 02:56:27,745 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:56:27" (1/1) ... [2023-12-16 02:56:27,745 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:56:27" (1/1) ... [2023-12-16 02:56:27,766 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:56:27" (1/1) ... [2023-12-16 02:56:27,770 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:56:27" (1/1) ... [2023-12-16 02:56:27,774 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:56:27" (1/1) ... [2023-12-16 02:56:27,778 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:56:27" (1/1) ... [2023-12-16 02:56:27,785 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 02:56:27,785 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 02:56:27,786 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 02:56:27,786 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 02:56:27,786 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:56:27" (1/1) ... [2023-12-16 02:56:27,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:56:27,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:27,816 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) [2023-12-16 02:56:27,835 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 [2023-12-16 02:56:27,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 02:56:27,839 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 02:56:27,840 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 02:56:27,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 02:56:27,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 02:56:27,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 02:56:27,957 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 02:56:27,958 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 02:56:28,638 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 02:56:28,681 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 02:56:28,681 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 02:56:28,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:56:28 BoogieIcfgContainer [2023-12-16 02:56:28,682 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 02:56:28,683 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 02:56:28,683 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 02:56:28,685 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 02:56:28,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:56:27" (1/3) ... [2023-12-16 02:56:28,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@173b1c1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:56:28, skipping insertion in model container [2023-12-16 02:56:28,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:56:27" (2/3) ... [2023-12-16 02:56:28,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@173b1c1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:56:28, skipping insertion in model container [2023-12-16 02:56:28,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:56:28" (3/3) ... [2023-12-16 02:56:28,688 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-0.i [2023-12-16 02:56:28,700 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 02:56:28,700 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 02:56:28,738 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 02:56:28,742 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;@640bbb68, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 02:56:28,742 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 02:56:28,747 INFO L276 IsEmpty]: Start isEmpty. Operand has 255 states, 173 states have (on average 1.6473988439306357) internal successors, (285), 174 states have internal predecessors, (285), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-16 02:56:28,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2023-12-16 02:56:28,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:56:28,765 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:56:28,765 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:56:28,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:56:28,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1759572200, now seen corresponding path program 1 times [2023-12-16 02:56:28,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:56:28,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305885198] [2023-12-16 02:56:28,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:28,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:56:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:29,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:56:29,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305885198] [2023-12-16 02:56:29,057 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 02:56:29,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645328421] [2023-12-16 02:56:29,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:29,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:29,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:29,062 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) [2023-12-16 02:56:29,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 02:56:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:29,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 1285 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 02:56:29,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:56:29,517 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 12168 trivial. 0 not checked. [2023-12-16 02:56:29,518 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:56:29,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645328421] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:56:29,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:56:29,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:56:29,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728266972] [2023-12-16 02:56:29,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:56:29,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 02:56:29,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:56:29,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 02:56:29,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:56:29,559 INFO L87 Difference]: Start difference. First operand has 255 states, 173 states have (on average 1.6473988439306357) internal successors, (285), 174 states have internal predecessors, (285), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) Second operand has 2 states, 2 states have (on average 69.0) internal successors, (138), 2 states have internal predecessors, (138), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 2 states have call successors, (79) [2023-12-16 02:56:29,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:56:29,611 INFO L93 Difference]: Finished difference Result 505 states and 959 transitions. [2023-12-16 02:56:29,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 02:56:29,618 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 69.0) internal successors, (138), 2 states have internal predecessors, (138), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 2 states have call successors, (79) Word has length 528 [2023-12-16 02:56:29,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:56:29,625 INFO L225 Difference]: With dead ends: 505 [2023-12-16 02:56:29,625 INFO L226 Difference]: Without dead ends: 251 [2023-12-16 02:56:29,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:56:29,632 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:56:29,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 429 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:56:29,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-12-16 02:56:29,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2023-12-16 02:56:29,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 170 states have (on average 1.611764705882353) internal successors, (274), 170 states have internal predecessors, (274), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-16 02:56:29,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 432 transitions. [2023-12-16 02:56:29,692 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 432 transitions. Word has length 528 [2023-12-16 02:56:29,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:56:29,692 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 432 transitions. [2023-12-16 02:56:29,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 69.0) internal successors, (138), 2 states have internal predecessors, (138), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 2 states have call successors, (79) [2023-12-16 02:56:29,693 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 432 transitions. [2023-12-16 02:56:29,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2023-12-16 02:56:29,702 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:56:29,702 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:56:29,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 02:56:29,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-16 02:56:29,903 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:56:29,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:56:29,904 INFO L85 PathProgramCache]: Analyzing trace with hash -29506070, now seen corresponding path program 1 times [2023-12-16 02:56:29,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:56:29,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525160448] [2023-12-16 02:56:29,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:29,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:56:29,973 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:56:29,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [285723463] [2023-12-16 02:56:29,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:29,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:29,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:29,979 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) [2023-12-16 02:56:29,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 02:56:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:30,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 1285 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:56:30,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:56:30,811 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-16 02:56:30,811 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:56:30,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:56:30,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525160448] [2023-12-16 02:56:30,811 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:56:30,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285723463] [2023-12-16 02:56:30,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285723463] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:56:30,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:56:30,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:56:30,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626031960] [2023-12-16 02:56:30,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:56:30,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:56:30,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:56:30,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:56:30,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:56:30,815 INFO L87 Difference]: Start difference. First operand 251 states and 432 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 02:56:30,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:56:30,887 INFO L93 Difference]: Finished difference Result 751 states and 1294 transitions. [2023-12-16 02:56:30,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:56:30,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 528 [2023-12-16 02:56:30,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:56:30,897 INFO L225 Difference]: With dead ends: 751 [2023-12-16 02:56:30,898 INFO L226 Difference]: Without dead ends: 501 [2023-12-16 02:56:30,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:56:30,899 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 160 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:56:30,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 898 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:56:30,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2023-12-16 02:56:30,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 499. [2023-12-16 02:56:30,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 338 states have (on average 1.6124260355029585) internal successors, (545), 338 states have internal predecessors, (545), 158 states have call successors, (158), 2 states have call predecessors, (158), 2 states have return successors, (158), 158 states have call predecessors, (158), 158 states have call successors, (158) [2023-12-16 02:56:30,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 861 transitions. [2023-12-16 02:56:30,991 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 861 transitions. Word has length 528 [2023-12-16 02:56:30,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:56:30,992 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 861 transitions. [2023-12-16 02:56:30,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 02:56:30,993 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 861 transitions. [2023-12-16 02:56:30,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-16 02:56:30,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:56:30,997 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:56:31,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 02:56:31,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-16 02:56:31,205 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:56:31,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:56:31,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1908867633, now seen corresponding path program 1 times [2023-12-16 02:56:31,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:56:31,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688213993] [2023-12-16 02:56:31,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:31,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:56:31,269 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:56:31,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1564611802] [2023-12-16 02:56:31,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:31,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:31,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:31,271 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) [2023-12-16 02:56:31,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 02:56:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:31,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 1289 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 02:56:31,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:56:32,539 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-16 02:56:32,539 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:56:32,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:56:32,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688213993] [2023-12-16 02:56:32,539 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:56:32,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564611802] [2023-12-16 02:56:32,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564611802] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:56:32,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:56:32,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 02:56:32,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708962605] [2023-12-16 02:56:32,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:56:32,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 02:56:32,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:56:32,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 02:56:32,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:56:32,544 INFO L87 Difference]: Start difference. First operand 499 states and 861 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 02:56:32,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:56:32,860 INFO L93 Difference]: Finished difference Result 1341 states and 2322 transitions. [2023-12-16 02:56:32,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 02:56:32,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 529 [2023-12-16 02:56:32,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:56:32,869 INFO L225 Difference]: With dead ends: 1341 [2023-12-16 02:56:32,869 INFO L226 Difference]: Without dead ends: 843 [2023-12-16 02:56:32,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 525 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:56:32,873 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 411 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 02:56:32,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 1536 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 02:56:32,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2023-12-16 02:56:32,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 811. [2023-12-16 02:56:32,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 570 states have (on average 1.6473684210526316) internal successors, (939), 570 states have internal predecessors, (939), 237 states have call successors, (237), 3 states have call predecessors, (237), 3 states have return successors, (237), 237 states have call predecessors, (237), 237 states have call successors, (237) [2023-12-16 02:56:32,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1413 transitions. [2023-12-16 02:56:32,942 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1413 transitions. Word has length 529 [2023-12-16 02:56:32,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:56:32,945 INFO L495 AbstractCegarLoop]: Abstraction has 811 states and 1413 transitions. [2023-12-16 02:56:32,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 02:56:32,946 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1413 transitions. [2023-12-16 02:56:32,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-16 02:56:32,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:56:32,950 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:56:32,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 02:56:33,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:33,157 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:56:33,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:56:33,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1650702195, now seen corresponding path program 1 times [2023-12-16 02:56:33,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:56:33,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840427163] [2023-12-16 02:56:33,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:33,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:56:33,215 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:56:33,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [434611566] [2023-12-16 02:56:33,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:33,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:33,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:33,220 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) [2023-12-16 02:56:33,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 02:56:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:33,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 1287 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:56:33,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:56:33,517 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-16 02:56:33,517 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:56:33,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:56:33,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840427163] [2023-12-16 02:56:33,518 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:56:33,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434611566] [2023-12-16 02:56:33,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434611566] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:56:33,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:56:33,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:56:33,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267693246] [2023-12-16 02:56:33,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:56:33,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:56:33,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:56:33,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:56:33,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:56:33,520 INFO L87 Difference]: Start difference. First operand 811 states and 1413 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 02:56:33,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:56:33,565 INFO L93 Difference]: Finished difference Result 1943 states and 3425 transitions. [2023-12-16 02:56:33,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:56:33,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 529 [2023-12-16 02:56:33,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:56:33,571 INFO L225 Difference]: With dead ends: 1943 [2023-12-16 02:56:33,571 INFO L226 Difference]: Without dead ends: 1290 [2023-12-16 02:56:33,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:56:33,576 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 256 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:56:33,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 909 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:56:33,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2023-12-16 02:56:33,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1286. [2023-12-16 02:56:33,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 999 states have (on average 1.7067067067067068) internal successors, (1705), 1001 states have internal predecessors, (1705), 281 states have call successors, (281), 5 states have call predecessors, (281), 5 states have return successors, (281), 279 states have call predecessors, (281), 281 states have call successors, (281) [2023-12-16 02:56:33,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 2267 transitions. [2023-12-16 02:56:33,633 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 2267 transitions. Word has length 529 [2023-12-16 02:56:33,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:56:33,633 INFO L495 AbstractCegarLoop]: Abstraction has 1286 states and 2267 transitions. [2023-12-16 02:56:33,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 02:56:33,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 2267 transitions. [2023-12-16 02:56:33,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-16 02:56:33,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:56:33,637 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:56:33,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 02:56:33,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:33,848 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:56:33,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:56:33,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1178707358, now seen corresponding path program 1 times [2023-12-16 02:56:33,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:56:33,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526366708] [2023-12-16 02:56:33,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:33,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:56:33,882 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:56:33,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1792213534] [2023-12-16 02:56:33,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:33,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:33,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:33,884 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) [2023-12-16 02:56:33,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 02:56:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:34,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 1284 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:56:34,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:56:34,182 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-16 02:56:34,182 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:56:34,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:56:34,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526366708] [2023-12-16 02:56:34,182 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:56:34,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792213534] [2023-12-16 02:56:34,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792213534] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:56:34,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:56:34,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:56:34,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580151137] [2023-12-16 02:56:34,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:56:34,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:56:34,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:56:34,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:56:34,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:56:34,184 INFO L87 Difference]: Start difference. First operand 1286 states and 2267 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 02:56:34,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:56:34,250 INFO L93 Difference]: Finished difference Result 3318 states and 5839 transitions. [2023-12-16 02:56:34,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:56:34,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 529 [2023-12-16 02:56:34,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:56:34,262 INFO L225 Difference]: With dead ends: 3318 [2023-12-16 02:56:34,263 INFO L226 Difference]: Without dead ends: 2262 [2023-12-16 02:56:34,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:56:34,266 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 360 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:56:34,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 1057 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:56:34,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2023-12-16 02:56:34,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 1806. [2023-12-16 02:56:34,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1519 states have (on average 1.7399605003291638) internal successors, (2643), 1521 states have internal predecessors, (2643), 281 states have call successors, (281), 5 states have call predecessors, (281), 5 states have return successors, (281), 279 states have call predecessors, (281), 281 states have call successors, (281) [2023-12-16 02:56:34,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 3205 transitions. [2023-12-16 02:56:34,361 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 3205 transitions. Word has length 529 [2023-12-16 02:56:34,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:56:34,362 INFO L495 AbstractCegarLoop]: Abstraction has 1806 states and 3205 transitions. [2023-12-16 02:56:34,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 02:56:34,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 3205 transitions. [2023-12-16 02:56:34,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-16 02:56:34,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:56:34,366 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:56:34,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-16 02:56:34,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:34,574 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:56:34,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:56:34,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2132647516, now seen corresponding path program 1 times [2023-12-16 02:56:34,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:56:34,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068957002] [2023-12-16 02:56:34,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:34,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:56:34,608 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:56:34,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [5259888] [2023-12-16 02:56:34,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:34,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:34,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:34,610 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) [2023-12-16 02:56:34,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 02:56:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:34,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 1283 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:56:34,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:56:34,921 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-16 02:56:34,921 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:56:34,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:56:34,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068957002] [2023-12-16 02:56:34,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:56:34,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5259888] [2023-12-16 02:56:34,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5259888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:56:34,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:56:34,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:56:34,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531355455] [2023-12-16 02:56:34,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:56:34,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:56:34,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:56:34,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:56:34,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:56:34,924 INFO L87 Difference]: Start difference. First operand 1806 states and 3205 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 02:56:34,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:56:34,996 INFO L93 Difference]: Finished difference Result 3586 states and 6279 transitions. [2023-12-16 02:56:34,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:56:34,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 529 [2023-12-16 02:56:34,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:56:35,005 INFO L225 Difference]: With dead ends: 3586 [2023-12-16 02:56:35,005 INFO L226 Difference]: Without dead ends: 2262 [2023-12-16 02:56:35,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:56:35,009 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 351 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:56:35,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 859 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:56:35,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2023-12-16 02:56:35,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 1806. [2023-12-16 02:56:35,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1519 states have (on average 1.7136273864384464) internal successors, (2603), 1521 states have internal predecessors, (2603), 281 states have call successors, (281), 5 states have call predecessors, (281), 5 states have return successors, (281), 279 states have call predecessors, (281), 281 states have call successors, (281) [2023-12-16 02:56:35,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 3165 transitions. [2023-12-16 02:56:35,085 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 3165 transitions. Word has length 529 [2023-12-16 02:56:35,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:56:35,086 INFO L495 AbstractCegarLoop]: Abstraction has 1806 states and 3165 transitions. [2023-12-16 02:56:35,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 02:56:35,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 3165 transitions. [2023-12-16 02:56:35,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-16 02:56:35,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:56:35,100 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:56:35,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 02:56:35,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:35,308 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:56:35,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:56:35,309 INFO L85 PathProgramCache]: Analyzing trace with hash -527387876, now seen corresponding path program 1 times [2023-12-16 02:56:35,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:56:35,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495147980] [2023-12-16 02:56:35,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:35,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:56:35,341 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:56:35,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [977815618] [2023-12-16 02:56:35,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:35,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:35,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:35,343 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) [2023-12-16 02:56:35,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 02:56:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:35,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 1283 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:56:35,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:56:35,654 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-16 02:56:35,655 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:56:35,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:56:35,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495147980] [2023-12-16 02:56:35,655 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:56:35,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977815618] [2023-12-16 02:56:35,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977815618] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:56:35,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:56:35,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:56:35,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275409532] [2023-12-16 02:56:35,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:56:35,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:56:35,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:56:35,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:56:35,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:56:35,657 INFO L87 Difference]: Start difference. First operand 1806 states and 3165 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 02:56:35,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:56:35,725 INFO L93 Difference]: Finished difference Result 4464 states and 7826 transitions. [2023-12-16 02:56:35,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:56:35,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 529 [2023-12-16 02:56:35,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:56:35,738 INFO L225 Difference]: With dead ends: 4464 [2023-12-16 02:56:35,739 INFO L226 Difference]: Without dead ends: 3132 [2023-12-16 02:56:35,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:56:35,747 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 189 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:56:35,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 887 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:56:35,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3132 states. [2023-12-16 02:56:35,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3132 to 3126. [2023-12-16 02:56:35,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3126 states, 2763 states have (on average 1.7169743032935216) internal successors, (4744), 2769 states have internal predecessors, (4744), 353 states have call successors, (353), 9 states have call predecessors, (353), 9 states have return successors, (353), 347 states have call predecessors, (353), 353 states have call successors, (353) [2023-12-16 02:56:35,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3126 states to 3126 states and 5450 transitions. [2023-12-16 02:56:35,843 INFO L78 Accepts]: Start accepts. Automaton has 3126 states and 5450 transitions. Word has length 529 [2023-12-16 02:56:35,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:56:35,844 INFO L495 AbstractCegarLoop]: Abstraction has 3126 states and 5450 transitions. [2023-12-16 02:56:35,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 02:56:35,844 INFO L276 IsEmpty]: Start isEmpty. Operand 3126 states and 5450 transitions. [2023-12-16 02:56:35,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-16 02:56:35,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:56:35,848 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:56:35,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 02:56:36,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:36,056 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:56:36,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:56:36,056 INFO L85 PathProgramCache]: Analyzing trace with hash -951034598, now seen corresponding path program 1 times [2023-12-16 02:56:36,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:56:36,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392543411] [2023-12-16 02:56:36,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:36,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:56:36,090 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:56:36,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [706164224] [2023-12-16 02:56:36,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:36,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:36,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:36,091 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) [2023-12-16 02:56:36,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 02:56:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:36,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 1284 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 02:56:36,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:56:36,451 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-16 02:56:36,451 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:56:36,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:56:36,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392543411] [2023-12-16 02:56:36,451 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:56:36,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706164224] [2023-12-16 02:56:36,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706164224] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:56:36,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:56:36,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 02:56:36,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886875096] [2023-12-16 02:56:36,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:56:36,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 02:56:36,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:56:36,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 02:56:36,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:56:36,453 INFO L87 Difference]: Start difference. First operand 3126 states and 5450 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 02:56:36,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:56:36,908 INFO L93 Difference]: Finished difference Result 15027 states and 25811 transitions. [2023-12-16 02:56:36,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 02:56:36,909 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 529 [2023-12-16 02:56:36,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:56:36,948 INFO L225 Difference]: With dead ends: 15027 [2023-12-16 02:56:36,949 INFO L226 Difference]: Without dead ends: 12621 [2023-12-16 02:56:36,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-16 02:56:36,959 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 1714 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1714 SdHoareTripleChecker+Valid, 2476 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:56:36,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1714 Valid, 2476 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 02:56:36,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12621 states. [2023-12-16 02:56:37,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12621 to 8995. [2023-12-16 02:56:37,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8995 states, 8109 states have (on average 1.700949562214823) internal successors, (13793), 8137 states have internal predecessors, (13793), 851 states have call successors, (851), 34 states have call predecessors, (851), 34 states have return successors, (851), 823 states have call predecessors, (851), 851 states have call successors, (851) [2023-12-16 02:56:37,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8995 states to 8995 states and 15495 transitions. [2023-12-16 02:56:37,306 INFO L78 Accepts]: Start accepts. Automaton has 8995 states and 15495 transitions. Word has length 529 [2023-12-16 02:56:37,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:56:37,307 INFO L495 AbstractCegarLoop]: Abstraction has 8995 states and 15495 transitions. [2023-12-16 02:56:37,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 02:56:37,316 INFO L276 IsEmpty]: Start isEmpty. Operand 8995 states and 15495 transitions. [2023-12-16 02:56:37,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-16 02:56:37,324 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:56:37,324 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:56:37,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 02:56:37,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-16 02:56:37,531 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:56:37,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:56:37,532 INFO L85 PathProgramCache]: Analyzing trace with hash -770635044, now seen corresponding path program 1 times [2023-12-16 02:56:37,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:56:37,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901452662] [2023-12-16 02:56:37,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:37,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:56:37,564 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:56:37,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [282873006] [2023-12-16 02:56:37,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:37,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:37,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:37,565 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) [2023-12-16 02:56:37,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 02:56:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:37,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 02:56:37,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:56:38,274 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 3690 proven. 192 refuted. 0 times theorem prover too weak. 8442 trivial. 0 not checked. [2023-12-16 02:56:38,274 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:56:38,546 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 42 proven. 192 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-12-16 02:56:38,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:56:38,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901452662] [2023-12-16 02:56:38,547 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:56:38,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282873006] [2023-12-16 02:56:38,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282873006] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:56:38,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:56:38,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 02:56:38,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332368875] [2023-12-16 02:56:38,547 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:56:38,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 02:56:38,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:56:38,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 02:56:38,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:56:38,549 INFO L87 Difference]: Start difference. First operand 8995 states and 15495 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 2 states have call successors, (143), 2 states have call predecessors, (143), 4 states have return successors, (144), 2 states have call predecessors, (144), 2 states have call successors, (144) [2023-12-16 02:56:39,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:56:39,002 INFO L93 Difference]: Finished difference Result 15101 states and 25847 transitions. [2023-12-16 02:56:39,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 02:56:39,002 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 2 states have call successors, (143), 2 states have call predecessors, (143), 4 states have return successors, (144), 2 states have call predecessors, (144), 2 states have call successors, (144) Word has length 529 [2023-12-16 02:56:39,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:56:39,034 INFO L225 Difference]: With dead ends: 15101 [2023-12-16 02:56:39,035 INFO L226 Difference]: Without dead ends: 7747 [2023-12-16 02:56:39,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1060 GetRequests, 1050 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 02:56:39,051 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 205 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:56:39,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 923 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 02:56:39,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7747 states. [2023-12-16 02:56:39,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7747 to 7679. [2023-12-16 02:56:39,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7679 states, 6776 states have (on average 1.6832939787485242) internal successors, (11406), 6804 states have internal predecessors, (11406), 851 states have call successors, (851), 51 states have call predecessors, (851), 51 states have return successors, (851), 823 states have call predecessors, (851), 851 states have call successors, (851) [2023-12-16 02:56:39,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7679 states to 7679 states and 13108 transitions. [2023-12-16 02:56:39,338 INFO L78 Accepts]: Start accepts. Automaton has 7679 states and 13108 transitions. Word has length 529 [2023-12-16 02:56:39,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:56:39,339 INFO L495 AbstractCegarLoop]: Abstraction has 7679 states and 13108 transitions. [2023-12-16 02:56:39,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 2 states have call successors, (143), 2 states have call predecessors, (143), 4 states have return successors, (144), 2 states have call predecessors, (144), 2 states have call successors, (144) [2023-12-16 02:56:39,339 INFO L276 IsEmpty]: Start isEmpty. Operand 7679 states and 13108 transitions. [2023-12-16 02:56:39,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-16 02:56:39,346 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:56:39,346 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:56:39,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 02:56:39,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:39,557 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:56:39,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:56:39,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1537310820, now seen corresponding path program 1 times [2023-12-16 02:56:39,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:56:39,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064437718] [2023-12-16 02:56:39,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:39,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:56:39,598 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:56:39,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [176425928] [2023-12-16 02:56:39,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:39,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:39,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:39,610 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) [2023-12-16 02:56:39,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 02:56:39,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:39,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 1284 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 02:56:39,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:56:40,273 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 4600 proven. 177 refuted. 0 times theorem prover too weak. 7547 trivial. 0 not checked. [2023-12-16 02:56:40,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:56:40,580 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 57 proven. 177 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-12-16 02:56:40,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:56:40,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064437718] [2023-12-16 02:56:40,580 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:56:40,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176425928] [2023-12-16 02:56:40,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176425928] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:56:40,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:56:40,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 02:56:40,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899862101] [2023-12-16 02:56:40,581 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:56:40,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 02:56:40,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:56:40,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 02:56:40,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:56:40,583 INFO L87 Difference]: Start difference. First operand 7679 states and 13108 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 2 states have call successors, (138), 2 states have call predecessors, (138), 4 states have return successors, (139), 2 states have call predecessors, (139), 2 states have call successors, (139) [2023-12-16 02:56:40,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:56:40,937 INFO L93 Difference]: Finished difference Result 9385 states and 15982 transitions. [2023-12-16 02:56:40,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 02:56:40,938 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 2 states have call successors, (138), 2 states have call predecessors, (138), 4 states have return successors, (139), 2 states have call predecessors, (139), 2 states have call successors, (139) Word has length 529 [2023-12-16 02:56:40,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:56:40,945 INFO L225 Difference]: With dead ends: 9385 [2023-12-16 02:56:40,945 INFO L226 Difference]: Without dead ends: 2803 [2023-12-16 02:56:40,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1060 GetRequests, 1050 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 02:56:40,956 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 236 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:56:40,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 839 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 02:56:40,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2803 states. [2023-12-16 02:56:41,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2803 to 2773. [2023-12-16 02:56:41,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2773 states, 2415 states have (on average 1.6612836438923395) internal successors, (4012), 2421 states have internal predecessors, (4012), 337 states have call successors, (337), 20 states have call predecessors, (337), 20 states have return successors, (337), 331 states have call predecessors, (337), 337 states have call successors, (337) [2023-12-16 02:56:41,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2773 states to 2773 states and 4686 transitions. [2023-12-16 02:56:41,043 INFO L78 Accepts]: Start accepts. Automaton has 2773 states and 4686 transitions. Word has length 529 [2023-12-16 02:56:41,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:56:41,044 INFO L495 AbstractCegarLoop]: Abstraction has 2773 states and 4686 transitions. [2023-12-16 02:56:41,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 2 states have call successors, (138), 2 states have call predecessors, (138), 4 states have return successors, (139), 2 states have call predecessors, (139), 2 states have call successors, (139) [2023-12-16 02:56:41,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2773 states and 4686 transitions. [2023-12-16 02:56:41,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-16 02:56:41,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:56:41,048 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:56:41,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-16 02:56:41,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-16 02:56:41,255 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:56:41,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:56:41,256 INFO L85 PathProgramCache]: Analyzing trace with hash 183642782, now seen corresponding path program 1 times [2023-12-16 02:56:41,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:56:41,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383984652] [2023-12-16 02:56:41,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:41,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:56:41,291 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:56:41,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [80945250] [2023-12-16 02:56:41,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:41,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:41,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:41,292 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) [2023-12-16 02:56:41,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 02:56:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:41,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 1279 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 02:56:41,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:56:42,111 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-16 02:56:42,111 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:56:42,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:56:42,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383984652] [2023-12-16 02:56:42,112 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:56:42,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80945250] [2023-12-16 02:56:42,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80945250] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:56:42,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:56:42,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 02:56:42,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60574039] [2023-12-16 02:56:42,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:56:42,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 02:56:42,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:56:42,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 02:56:42,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:56:42,114 INFO L87 Difference]: Start difference. First operand 2773 states and 4686 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 02:56:43,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:56:43,126 INFO L93 Difference]: Finished difference Result 8669 states and 14540 transitions. [2023-12-16 02:56:43,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 02:56:43,126 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 529 [2023-12-16 02:56:43,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:56:43,173 INFO L225 Difference]: With dead ends: 8669 [2023-12-16 02:56:43,174 INFO L226 Difference]: Without dead ends: 6669 [2023-12-16 02:56:43,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 525 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-16 02:56:43,178 INFO L413 NwaCegarLoop]: 724 mSDtfsCounter, 1295 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 02:56:43,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1295 Valid, 1369 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 02:56:43,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6669 states. [2023-12-16 02:56:43,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6669 to 3337. [2023-12-16 02:56:43,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3337 states, 2979 states have (on average 1.690835850956697) internal successors, (5037), 2985 states have internal predecessors, (5037), 337 states have call successors, (337), 20 states have call predecessors, (337), 20 states have return successors, (337), 331 states have call predecessors, (337), 337 states have call successors, (337) [2023-12-16 02:56:43,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3337 states to 3337 states and 5711 transitions. [2023-12-16 02:56:43,337 INFO L78 Accepts]: Start accepts. Automaton has 3337 states and 5711 transitions. Word has length 529 [2023-12-16 02:56:43,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:56:43,338 INFO L495 AbstractCegarLoop]: Abstraction has 3337 states and 5711 transitions. [2023-12-16 02:56:43,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 02:56:43,338 INFO L276 IsEmpty]: Start isEmpty. Operand 3337 states and 5711 transitions. [2023-12-16 02:56:43,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-16 02:56:43,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:56:43,343 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:56:43,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-16 02:56:43,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-16 02:56:43,551 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:56:43,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:56:43,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1155090208, now seen corresponding path program 1 times [2023-12-16 02:56:43,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:56:43,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379234417] [2023-12-16 02:56:43,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:43,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:56:43,595 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:56:43,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [679599985] [2023-12-16 02:56:43,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:43,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:43,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:43,597 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) [2023-12-16 02:56:43,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-16 02:56:43,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:43,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 1276 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 02:56:43,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:56:44,395 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-16 02:56:44,396 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:56:44,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:56:44,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379234417] [2023-12-16 02:56:44,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:56:44,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679599985] [2023-12-16 02:56:44,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679599985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:56:44,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:56:44,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 02:56:44,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598652177] [2023-12-16 02:56:44,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:56:44,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 02:56:44,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:56:44,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 02:56:44,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:56:44,398 INFO L87 Difference]: Start difference. First operand 3337 states and 5711 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 02:56:44,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:56:44,951 INFO L93 Difference]: Finished difference Result 12471 states and 21010 transitions. [2023-12-16 02:56:44,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 02:56:44,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 529 [2023-12-16 02:56:44,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:56:44,971 INFO L225 Difference]: With dead ends: 12471 [2023-12-16 02:56:44,972 INFO L226 Difference]: Without dead ends: 9955 [2023-12-16 02:56:44,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 525 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-16 02:56:44,980 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 1057 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:56:44,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1057 Valid, 1222 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 02:56:44,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9955 states. [2023-12-16 02:56:45,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9955 to 7209. [2023-12-16 02:56:45,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7209 states, 6718 states have (on average 1.7124144090503126) internal successors, (11504), 6732 states have internal predecessors, (11504), 457 states have call successors, (457), 33 states have call predecessors, (457), 33 states have return successors, (457), 443 states have call predecessors, (457), 457 states have call successors, (457) [2023-12-16 02:56:45,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7209 states to 7209 states and 12418 transitions. [2023-12-16 02:56:45,246 INFO L78 Accepts]: Start accepts. Automaton has 7209 states and 12418 transitions. Word has length 529 [2023-12-16 02:56:45,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:56:45,246 INFO L495 AbstractCegarLoop]: Abstraction has 7209 states and 12418 transitions. [2023-12-16 02:56:45,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 02:56:45,247 INFO L276 IsEmpty]: Start isEmpty. Operand 7209 states and 12418 transitions. [2023-12-16 02:56:45,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-16 02:56:45,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:56:45,254 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:56:45,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-16 02:56:45,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-16 02:56:45,462 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:56:45,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:56:45,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1200715042, now seen corresponding path program 1 times [2023-12-16 02:56:45,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:56:45,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769290065] [2023-12-16 02:56:45,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:45,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:56:45,539 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:56:45,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [854751724] [2023-12-16 02:56:45,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:45,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:45,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:45,552 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) [2023-12-16 02:56:45,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-16 02:56:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:45,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 1275 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 02:56:45,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:56:46,244 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 4260 proven. 183 refuted. 0 times theorem prover too weak. 7881 trivial. 0 not checked. [2023-12-16 02:56:46,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:56:46,544 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 51 proven. 183 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-12-16 02:56:46,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:56:46,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769290065] [2023-12-16 02:56:46,545 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:56:46,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854751724] [2023-12-16 02:56:46,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854751724] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:56:46,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:56:46,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 02:56:46,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884143973] [2023-12-16 02:56:46,545 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:56:46,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 02:56:46,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:56:46,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 02:56:46,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:56:46,547 INFO L87 Difference]: Start difference. First operand 7209 states and 12418 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 2 states have call successors, (140), 2 states have call predecessors, (140), 4 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) [2023-12-16 02:56:46,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:56:46,941 INFO L93 Difference]: Finished difference Result 12033 states and 20556 transitions. [2023-12-16 02:56:46,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 02:56:46,942 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 2 states have call successors, (140), 2 states have call predecessors, (140), 4 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) Word has length 529 [2023-12-16 02:56:46,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:56:46,982 INFO L225 Difference]: With dead ends: 12033 [2023-12-16 02:56:46,982 INFO L226 Difference]: Without dead ends: 6189 [2023-12-16 02:56:46,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1060 GetRequests, 1050 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 02:56:46,989 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 211 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 02:56:46,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 843 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 02:56:46,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6189 states. [2023-12-16 02:56:47,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6189 to 6133. [2023-12-16 02:56:47,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6133 states, 5637 states have (on average 1.6698598545325527) internal successors, (9413), 5651 states have internal predecessors, (9413), 457 states have call successors, (457), 38 states have call predecessors, (457), 38 states have return successors, (457), 443 states have call predecessors, (457), 457 states have call successors, (457) [2023-12-16 02:56:47,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6133 states to 6133 states and 10327 transitions. [2023-12-16 02:56:47,188 INFO L78 Accepts]: Start accepts. Automaton has 6133 states and 10327 transitions. Word has length 529 [2023-12-16 02:56:47,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:56:47,189 INFO L495 AbstractCegarLoop]: Abstraction has 6133 states and 10327 transitions. [2023-12-16 02:56:47,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 2 states have call successors, (140), 2 states have call predecessors, (140), 4 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) [2023-12-16 02:56:47,189 INFO L276 IsEmpty]: Start isEmpty. Operand 6133 states and 10327 transitions. [2023-12-16 02:56:47,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-16 02:56:47,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:56:47,195 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:56:47,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-16 02:56:47,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-16 02:56:47,403 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:56:47,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:56:47,404 INFO L85 PathProgramCache]: Analyzing trace with hash 2082039010, now seen corresponding path program 1 times [2023-12-16 02:56:47,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:56:47,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626023787] [2023-12-16 02:56:47,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:47,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:56:47,444 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:56:47,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1922151663] [2023-12-16 02:56:47,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:47,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:47,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:47,446 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) [2023-12-16 02:56:47,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-16 02:56:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:47,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 1274 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 02:56:47,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:56:48,621 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-16 02:56:48,622 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:56:48,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:56:48,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626023787] [2023-12-16 02:56:48,622 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:56:48,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922151663] [2023-12-16 02:56:48,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922151663] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:56:48,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:56:48,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:56:48,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217622552] [2023-12-16 02:56:48,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:56:48,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:56:48,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:56:48,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:56:48,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:56:48,628 INFO L87 Difference]: Start difference. First operand 6133 states and 10327 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 02:56:48,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:56:48,808 INFO L93 Difference]: Finished difference Result 12825 states and 21567 transitions. [2023-12-16 02:56:48,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:56:48,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 529 [2023-12-16 02:56:48,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:56:48,823 INFO L225 Difference]: With dead ends: 12825 [2023-12-16 02:56:48,824 INFO L226 Difference]: Without dead ends: 8133 [2023-12-16 02:56:48,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:56:48,832 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 190 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:56:48,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 1017 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:56:48,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8133 states. [2023-12-16 02:56:49,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8133 to 8131. [2023-12-16 02:56:49,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8131 states, 7357 states have (on average 1.6548865026505368) internal successors, (12175), 7377 states have internal predecessors, (12175), 715 states have call successors, (715), 58 states have call predecessors, (715), 58 states have return successors, (715), 695 states have call predecessors, (715), 715 states have call successors, (715) [2023-12-16 02:56:49,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8131 states to 8131 states and 13605 transitions. [2023-12-16 02:56:49,133 INFO L78 Accepts]: Start accepts. Automaton has 8131 states and 13605 transitions. Word has length 529 [2023-12-16 02:56:49,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:56:49,133 INFO L495 AbstractCegarLoop]: Abstraction has 8131 states and 13605 transitions. [2023-12-16 02:56:49,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 02:56:49,133 INFO L276 IsEmpty]: Start isEmpty. Operand 8131 states and 13605 transitions. [2023-12-16 02:56:49,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-12-16 02:56:49,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:56:49,139 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:56:49,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-16 02:56:49,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:49,346 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:56:49,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:56:49,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1155407135, now seen corresponding path program 1 times [2023-12-16 02:56:49,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:56:49,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890147466] [2023-12-16 02:56:49,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:49,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:56:49,377 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:56:49,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1713766249] [2023-12-16 02:56:49,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:49,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:49,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:49,378 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) [2023-12-16 02:56:49,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-16 02:56:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:49,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 1279 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 02:56:49,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:56:49,963 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-16 02:56:49,963 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:56:49,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:56:49,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890147466] [2023-12-16 02:56:49,964 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:56:49,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713766249] [2023-12-16 02:56:49,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713766249] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:56:49,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:56:49,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 02:56:49,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376634322] [2023-12-16 02:56:49,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:56:49,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 02:56:49,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:56:49,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 02:56:49,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 02:56:49,967 INFO L87 Difference]: Start difference. First operand 8131 states and 13605 transitions. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 02:56:50,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:56:50,454 INFO L93 Difference]: Finished difference Result 13957 states and 23230 transitions. [2023-12-16 02:56:50,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 02:56:50,454 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 530 [2023-12-16 02:56:50,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:56:50,469 INFO L225 Difference]: With dead ends: 13957 [2023-12-16 02:56:50,469 INFO L226 Difference]: Without dead ends: 6839 [2023-12-16 02:56:50,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-16 02:56:50,479 INFO L413 NwaCegarLoop]: 673 mSDtfsCounter, 461 mSDsluCounter, 1705 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 2378 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 02:56:50,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 2378 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 02:56:50,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6839 states. [2023-12-16 02:56:50,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6839 to 3756. [2023-12-16 02:56:50,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3756 states, 3150 states have (on average 1.607936507936508) internal successors, (5065), 3158 states have internal predecessors, (5065), 547 states have call successors, (547), 58 states have call predecessors, (547), 58 states have return successors, (547), 539 states have call predecessors, (547), 547 states have call successors, (547) [2023-12-16 02:56:50,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3756 states to 3756 states and 6159 transitions. [2023-12-16 02:56:50,701 INFO L78 Accepts]: Start accepts. Automaton has 3756 states and 6159 transitions. Word has length 530 [2023-12-16 02:56:50,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:56:50,702 INFO L495 AbstractCegarLoop]: Abstraction has 3756 states and 6159 transitions. [2023-12-16 02:56:50,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 02:56:50,702 INFO L276 IsEmpty]: Start isEmpty. Operand 3756 states and 6159 transitions. [2023-12-16 02:56:50,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-16 02:56:50,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:56:50,706 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:56:50,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-16 02:56:50,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-16 02:56:50,916 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:56:50,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:56:50,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1468350417, now seen corresponding path program 1 times [2023-12-16 02:56:50,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:56:50,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269832370] [2023-12-16 02:56:50,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:50,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:56:50,951 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:56:50,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [419495875] [2023-12-16 02:56:50,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:50,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:50,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:50,952 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) [2023-12-16 02:56:50,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-16 02:56:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:51,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 1285 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 02:56:51,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:56:51,914 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-16 02:56:51,914 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:56:51,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:56:51,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269832370] [2023-12-16 02:56:51,915 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:56:51,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419495875] [2023-12-16 02:56:51,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419495875] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:56:51,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:56:51,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 02:56:51,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9544634] [2023-12-16 02:56:51,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:56:51,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 02:56:51,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:56:51,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 02:56:51,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 02:56:51,917 INFO L87 Difference]: Start difference. First operand 3756 states and 6159 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 5 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 02:56:52,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:56:52,695 INFO L93 Difference]: Finished difference Result 12202 states and 19924 transitions. [2023-12-16 02:56:52,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 02:56:52,695 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 5 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 531 [2023-12-16 02:56:52,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:56:52,710 INFO L225 Difference]: With dead ends: 12202 [2023-12-16 02:56:52,711 INFO L226 Difference]: Without dead ends: 7868 [2023-12-16 02:56:52,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-12-16 02:56:52,718 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 1057 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 02:56:52,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1057 Valid, 1134 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 02:56:52,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7868 states. [2023-12-16 02:56:52,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7868 to 5060. [2023-12-16 02:56:52,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5060 states, 4378 states have (on average 1.624486066697122) internal successors, (7112), 4390 states have internal predecessors, (7112), 611 states have call successors, (611), 70 states have call predecessors, (611), 70 states have return successors, (611), 599 states have call predecessors, (611), 611 states have call successors, (611) [2023-12-16 02:56:52,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5060 states to 5060 states and 8334 transitions. [2023-12-16 02:56:52,987 INFO L78 Accepts]: Start accepts. Automaton has 5060 states and 8334 transitions. Word has length 531 [2023-12-16 02:56:52,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:56:52,988 INFO L495 AbstractCegarLoop]: Abstraction has 5060 states and 8334 transitions. [2023-12-16 02:56:52,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 5 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 02:56:52,988 INFO L276 IsEmpty]: Start isEmpty. Operand 5060 states and 8334 transitions. [2023-12-16 02:56:52,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-16 02:56:52,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:56:52,992 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:56:53,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-16 02:56:53,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-16 02:56:53,199 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:56:53,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:56:53,200 INFO L85 PathProgramCache]: Analyzing trace with hash -490224369, now seen corresponding path program 1 times [2023-12-16 02:56:53,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:56:53,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331046813] [2023-12-16 02:56:53,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:53,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:56:53,233 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:56:53,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1027687292] [2023-12-16 02:56:53,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:53,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:53,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:53,234 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) [2023-12-16 02:56:53,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-16 02:56:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:53,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 1284 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:56:53,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:56:53,648 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-16 02:56:53,648 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:56:53,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:56:53,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331046813] [2023-12-16 02:56:53,648 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:56:53,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027687292] [2023-12-16 02:56:53,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027687292] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:56:53,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:56:53,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:56:53,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065688787] [2023-12-16 02:56:53,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:56:53,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:56:53,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:56:53,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:56:53,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:56:53,650 INFO L87 Difference]: Start difference. First operand 5060 states and 8334 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 02:56:53,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:56:53,974 INFO L93 Difference]: Finished difference Result 12792 states and 20976 transitions. [2023-12-16 02:56:53,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:56:53,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 531 [2023-12-16 02:56:53,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:56:53,990 INFO L225 Difference]: With dead ends: 12792 [2023-12-16 02:56:53,990 INFO L226 Difference]: Without dead ends: 8398 [2023-12-16 02:56:53,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:56:53,997 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 375 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:56:53,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 832 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:56:54,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8398 states. [2023-12-16 02:56:54,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8398 to 6326. [2023-12-16 02:56:54,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6326 states, 5644 states have (on average 1.6495393338058115) internal successors, (9310), 5656 states have internal predecessors, (9310), 611 states have call successors, (611), 70 states have call predecessors, (611), 70 states have return successors, (611), 599 states have call predecessors, (611), 611 states have call successors, (611) [2023-12-16 02:56:54,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6326 states to 6326 states and 10532 transitions. [2023-12-16 02:56:54,272 INFO L78 Accepts]: Start accepts. Automaton has 6326 states and 10532 transitions. Word has length 531 [2023-12-16 02:56:54,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:56:54,273 INFO L495 AbstractCegarLoop]: Abstraction has 6326 states and 10532 transitions. [2023-12-16 02:56:54,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 02:56:54,273 INFO L276 IsEmpty]: Start isEmpty. Operand 6326 states and 10532 transitions. [2023-12-16 02:56:54,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-16 02:56:54,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:56:54,277 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:56:54,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-16 02:56:54,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-16 02:56:54,485 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:56:54,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:56:54,486 INFO L85 PathProgramCache]: Analyzing trace with hash 50173587, now seen corresponding path program 1 times [2023-12-16 02:56:54,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:56:54,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584477858] [2023-12-16 02:56:54,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:54,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:56:54,519 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:56:54,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [666251084] [2023-12-16 02:56:54,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:54,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:54,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:54,521 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) [2023-12-16 02:56:54,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-16 02:56:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:54,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 02:56:54,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:56:55,163 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 6232 proven. 0 refuted. 0 times theorem prover too weak. 6092 trivial. 0 not checked. [2023-12-16 02:56:55,164 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:56:55,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:56:55,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584477858] [2023-12-16 02:56:55,164 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:56:55,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666251084] [2023-12-16 02:56:55,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666251084] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:56:55,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:56:55,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 02:56:55,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648120259] [2023-12-16 02:56:55,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:56:55,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 02:56:55,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:56:55,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 02:56:55,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:56:55,166 INFO L87 Difference]: Start difference. First operand 6326 states and 10532 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 2 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2023-12-16 02:56:56,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:56:56,435 INFO L93 Difference]: Finished difference Result 22258 states and 36808 transitions. [2023-12-16 02:56:56,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 02:56:56,436 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 2 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) Word has length 531 [2023-12-16 02:56:56,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:56:56,464 INFO L225 Difference]: With dead ends: 22258 [2023-12-16 02:56:56,464 INFO L226 Difference]: Without dead ends: 17200 [2023-12-16 02:56:56,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 02:56:56,478 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 1408 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1408 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:56:56,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1408 Valid, 1316 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 02:56:56,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17200 states. [2023-12-16 02:56:57,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17200 to 17196. [2023-12-16 02:56:57,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17196 states, 15322 states have (on average 1.62935648087717) internal successors, (24965), 15358 states have internal predecessors, (24965), 1675 states have call successors, (1675), 198 states have call predecessors, (1675), 198 states have return successors, (1675), 1639 states have call predecessors, (1675), 1675 states have call successors, (1675) [2023-12-16 02:56:57,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17196 states to 17196 states and 28315 transitions. [2023-12-16 02:56:57,269 INFO L78 Accepts]: Start accepts. Automaton has 17196 states and 28315 transitions. Word has length 531 [2023-12-16 02:56:57,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:56:57,269 INFO L495 AbstractCegarLoop]: Abstraction has 17196 states and 28315 transitions. [2023-12-16 02:56:57,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 2 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2023-12-16 02:56:57,269 INFO L276 IsEmpty]: Start isEmpty. Operand 17196 states and 28315 transitions. [2023-12-16 02:56:57,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-16 02:56:57,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:56:57,277 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:56:57,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-16 02:56:57,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-16 02:56:57,487 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:56:57,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:56:57,487 INFO L85 PathProgramCache]: Analyzing trace with hash -459299503, now seen corresponding path program 1 times [2023-12-16 02:56:57,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:56:57,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970885661] [2023-12-16 02:56:57,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:57,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:56:57,523 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:56:57,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1472022971] [2023-12-16 02:56:57,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:56:57,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:56:57,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:56:57,525 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) [2023-12-16 02:56:57,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-16 02:56:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:56:57,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 1280 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 02:56:57,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:56:58,325 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 5370 proven. 72 refuted. 0 times theorem prover too weak. 6882 trivial. 0 not checked. [2023-12-16 02:56:58,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:56:58,852 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 162 proven. 72 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-12-16 02:56:58,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:56:58,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970885661] [2023-12-16 02:56:58,852 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:56:58,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472022971] [2023-12-16 02:56:58,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472022971] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:56:58,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:56:58,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-16 02:56:58,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142686852] [2023-12-16 02:56:58,853 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:56:58,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 02:56:58,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:56:58,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 02:56:58,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-16 02:56:58,855 INFO L87 Difference]: Start difference. First operand 17196 states and 28315 transitions. Second operand has 9 states, 9 states have (on average 21.22222222222222) internal successors, (191), 9 states have internal predecessors, (191), 2 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2023-12-16 02:56:59,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:56:59,828 INFO L93 Difference]: Finished difference Result 31844 states and 52090 transitions. [2023-12-16 02:56:59,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 02:56:59,829 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 21.22222222222222) internal successors, (191), 9 states have internal predecessors, (191), 2 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) Word has length 531 [2023-12-16 02:56:59,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:56:59,877 INFO L225 Difference]: With dead ends: 31844 [2023-12-16 02:56:59,878 INFO L226 Difference]: Without dead ends: 17574 [2023-12-16 02:56:59,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1067 GetRequests, 1052 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2023-12-16 02:56:59,898 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 281 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:56:59,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 1004 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 02:56:59,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17574 states. [2023-12-16 02:57:00,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17574 to 17300. [2023-12-16 02:57:00,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17300 states, 15400 states have (on average 1.6191558441558442) internal successors, (24935), 15436 states have internal predecessors, (24935), 1675 states have call successors, (1675), 224 states have call predecessors, (1675), 224 states have return successors, (1675), 1639 states have call predecessors, (1675), 1675 states have call successors, (1675) [2023-12-16 02:57:00,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17300 states to 17300 states and 28285 transitions. [2023-12-16 02:57:00,822 INFO L78 Accepts]: Start accepts. Automaton has 17300 states and 28285 transitions. Word has length 531 [2023-12-16 02:57:00,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:57:00,823 INFO L495 AbstractCegarLoop]: Abstraction has 17300 states and 28285 transitions. [2023-12-16 02:57:00,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.22222222222222) internal successors, (191), 9 states have internal predecessors, (191), 2 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2023-12-16 02:57:00,823 INFO L276 IsEmpty]: Start isEmpty. Operand 17300 states and 28285 transitions. [2023-12-16 02:57:00,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-16 02:57:00,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:57:00,831 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:57:00,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-16 02:57:01,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:57:01,039 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:57:01,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:57:01,039 INFO L85 PathProgramCache]: Analyzing trace with hash -397259889, now seen corresponding path program 1 times [2023-12-16 02:57:01,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:57:01,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682377594] [2023-12-16 02:57:01,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:01,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:57:01,070 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:57:01,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [182183820] [2023-12-16 02:57:01,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:01,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:57:01,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:57:01,072 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) [2023-12-16 02:57:01,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-16 02:57:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:57:01,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 1280 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 02:57:01,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:57:01,932 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-16 02:57:01,932 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:57:01,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:57:01,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682377594] [2023-12-16 02:57:01,932 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:57:01,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182183820] [2023-12-16 02:57:01,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182183820] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:57:01,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:57:01,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:57:01,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689039954] [2023-12-16 02:57:01,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:57:01,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:57:01,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:57:01,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:57:01,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:57:01,934 INFO L87 Difference]: Start difference. First operand 17300 states and 28285 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 02:57:02,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:57:02,840 INFO L93 Difference]: Finished difference Result 35888 states and 58467 transitions. [2023-12-16 02:57:02,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:57:02,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 531 [2023-12-16 02:57:02,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:57:02,870 INFO L225 Difference]: With dead ends: 35888 [2023-12-16 02:57:02,870 INFO L226 Difference]: Without dead ends: 20580 [2023-12-16 02:57:02,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:57:02,886 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 204 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 02:57:02,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 986 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 02:57:02,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20580 states. [2023-12-16 02:57:03,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20580 to 20578. [2023-12-16 02:57:03,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20578 states, 18074 states have (on average 1.608941020250083) internal successors, (29080), 18122 states have internal predecessors, (29080), 2207 states have call successors, (2207), 296 states have call predecessors, (2207), 296 states have return successors, (2207), 2159 states have call predecessors, (2207), 2207 states have call successors, (2207) [2023-12-16 02:57:03,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20578 states to 20578 states and 33494 transitions. [2023-12-16 02:57:03,918 INFO L78 Accepts]: Start accepts. Automaton has 20578 states and 33494 transitions. Word has length 531 [2023-12-16 02:57:03,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:57:03,919 INFO L495 AbstractCegarLoop]: Abstraction has 20578 states and 33494 transitions. [2023-12-16 02:57:03,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 02:57:03,919 INFO L276 IsEmpty]: Start isEmpty. Operand 20578 states and 33494 transitions. [2023-12-16 02:57:03,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-16 02:57:03,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:57:03,926 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:57:03,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-16 02:57:04,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:57:04,135 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:57:04,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:57:04,135 INFO L85 PathProgramCache]: Analyzing trace with hash 26223243, now seen corresponding path program 1 times [2023-12-16 02:57:04,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:57:04,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636985093] [2023-12-16 02:57:04,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:04,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:57:04,168 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:57:04,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [620622927] [2023-12-16 02:57:04,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:04,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:57:04,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:57:04,169 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) [2023-12-16 02:57:04,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-16 02:57:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:57:04,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 1283 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 02:57:04,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:57:05,327 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-16 02:57:05,328 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:57:05,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:57:05,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636985093] [2023-12-16 02:57:05,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:57:05,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620622927] [2023-12-16 02:57:05,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620622927] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:57:05,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:57:05,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 02:57:05,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818881289] [2023-12-16 02:57:05,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:57:05,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 02:57:05,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:57:05,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 02:57:05,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 02:57:05,330 INFO L87 Difference]: Start difference. First operand 20578 states and 33494 transitions. Second operand has 8 states, 8 states have (on average 17.375) internal successors, (139), 7 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 02:57:07,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:57:07,917 INFO L93 Difference]: Finished difference Result 51930 states and 83054 transitions. [2023-12-16 02:57:07,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 02:57:07,918 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 7 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 531 [2023-12-16 02:57:07,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:57:07,975 INFO L225 Difference]: With dead ends: 51930 [2023-12-16 02:57:07,975 INFO L226 Difference]: Without dead ends: 31540 [2023-12-16 02:57:08,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2023-12-16 02:57:08,001 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 1527 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1527 SdHoareTripleChecker+Valid, 1878 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:57:08,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1527 Valid, 1878 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 02:57:08,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31540 states. [2023-12-16 02:57:09,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31540 to 16744. [2023-12-16 02:57:09,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16744 states, 14816 states have (on average 1.6214227861771058) internal successors, (24023), 14832 states have internal predecessors, (24023), 1695 states have call successors, (1695), 232 states have call predecessors, (1695), 232 states have return successors, (1695), 1679 states have call predecessors, (1695), 1695 states have call successors, (1695) [2023-12-16 02:57:09,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16744 states to 16744 states and 27413 transitions. [2023-12-16 02:57:09,061 INFO L78 Accepts]: Start accepts. Automaton has 16744 states and 27413 transitions. Word has length 531 [2023-12-16 02:57:09,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:57:09,062 INFO L495 AbstractCegarLoop]: Abstraction has 16744 states and 27413 transitions. [2023-12-16 02:57:09,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 7 states have internal predecessors, (139), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-12-16 02:57:09,062 INFO L276 IsEmpty]: Start isEmpty. Operand 16744 states and 27413 transitions. [2023-12-16 02:57:09,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-12-16 02:57:09,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:57:09,068 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:57:09,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-16 02:57:09,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:57:09,269 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:57:09,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:57:09,269 INFO L85 PathProgramCache]: Analyzing trace with hash 326794879, now seen corresponding path program 1 times [2023-12-16 02:57:09,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:57:09,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277297684] [2023-12-16 02:57:09,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:09,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:57:09,303 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:57:09,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2123396796] [2023-12-16 02:57:09,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:57:09,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:57:09,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:57:09,305 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) [2023-12-16 02:57:09,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-16 02:57:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:57:09,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 1285 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-16 02:57:09,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:57:11,386 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 6460 proven. 160 refuted. 0 times theorem prover too weak. 5704 trivial. 0 not checked. [2023-12-16 02:57:11,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:57:12,857 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 327 proven. 138 refuted. 0 times theorem prover too weak. 11859 trivial. 0 not checked. [2023-12-16 02:57:12,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:57:12,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277297684] [2023-12-16 02:57:12,857 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:57:12,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123396796] [2023-12-16 02:57:12,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123396796] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:57:12,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:57:12,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-16 02:57:12,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482702824] [2023-12-16 02:57:12,857 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:57:12,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-16 02:57:12,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:57:12,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-16 02:57:12,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2023-12-16 02:57:12,860 INFO L87 Difference]: Start difference. First operand 16744 states and 27413 transitions. Second operand has 25 states, 24 states have (on average 11.291666666666666) internal successors, (271), 23 states have internal predecessors, (271), 6 states have call successors, (158), 4 states have call predecessors, (158), 8 states have return successors, (158), 6 states have call predecessors, (158), 6 states have call successors, (158) Received shutdown request... [2023-12-16 02:57:24,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-12-16 02:57:24,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1151 GetRequests, 1058 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3212 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2434, Invalid=6496, Unknown=0, NotChecked=0, Total=8930 [2023-12-16 02:57:24,262 INFO L413 NwaCegarLoop]: 913 mSDtfsCounter, 4652 mSDsluCounter, 6907 mSDsCounter, 0 mSdLazyCounter, 7251 mSolverCounterSat, 2317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4807 SdHoareTripleChecker+Valid, 7820 SdHoareTripleChecker+Invalid, 9568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2317 IncrementalHoareTripleChecker+Valid, 7251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:57:24,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4807 Valid, 7820 Invalid, 9568 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2317 Valid, 7251 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-16 02:57:24,263 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 02:57:24,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-16 02:57:24,281 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 02:57:24,281 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 02:57:24,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:57:24,471 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (16744states) and FLOYD_HOARE automaton (currently 82 states, 25 states before enhancement),while ReachableStatesComputation was computing reachable states (32916 states constructed, input type IntersectNwa). [2023-12-16 02:57:24,475 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:57:24,476 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 02:57:24,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:57:24 BoogieIcfgContainer [2023-12-16 02:57:24,478 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 02:57:24,478 INFO L158 Benchmark]: Toolchain (without parser) took 57332.86ms. Allocated memory was 337.6MB in the beginning and 2.4GB in the end (delta: 2.1GB). Free memory was 283.7MB in the beginning and 1.5GB in the end (delta: -1.2GB). Peak memory consumption was 858.8MB. Max. memory is 8.0GB. [2023-12-16 02:57:24,478 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 238.0MB. Free memory is still 189.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 02:57:24,478 INFO L158 Benchmark]: CACSL2BoogieTranslator took 454.84ms. Allocated memory is still 337.6MB. Free memory was 283.7MB in the beginning and 253.6MB in the end (delta: 30.1MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2023-12-16 02:57:24,479 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.57ms. Allocated memory is still 337.6MB. Free memory was 253.4MB in the beginning and 294.1MB in the end (delta: -40.7MB). Peak memory consumption was 7.2MB. Max. memory is 8.0GB. [2023-12-16 02:57:24,479 INFO L158 Benchmark]: Boogie Preprocessor took 101.36ms. Allocated memory is still 337.6MB. Free memory was 294.1MB in the beginning and 280.8MB in the end (delta: 13.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-16 02:57:24,479 INFO L158 Benchmark]: RCFGBuilder took 896.16ms. Allocated memory is still 337.6MB. Free memory was 280.8MB in the beginning and 204.9MB in the end (delta: 75.9MB). Peak memory consumption was 75.5MB. Max. memory is 8.0GB. [2023-12-16 02:57:24,479 INFO L158 Benchmark]: TraceAbstraction took 55794.63ms. Allocated memory was 337.6MB in the beginning and 2.4GB in the end (delta: 2.1GB). Free memory was 203.9MB in the beginning and 1.5GB in the end (delta: -1.3GB). Peak memory consumption was 778.2MB. Max. memory is 8.0GB. [2023-12-16 02:57:24,480 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 238.0MB. Free memory is still 189.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 454.84ms. Allocated memory is still 337.6MB. Free memory was 283.7MB in the beginning and 253.6MB in the end (delta: 30.1MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 81.57ms. Allocated memory is still 337.6MB. Free memory was 253.4MB in the beginning and 294.1MB in the end (delta: -40.7MB). Peak memory consumption was 7.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 101.36ms. Allocated memory is still 337.6MB. Free memory was 294.1MB in the beginning and 280.8MB in the end (delta: 13.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * RCFGBuilder took 896.16ms. Allocated memory is still 337.6MB. Free memory was 280.8MB in the beginning and 204.9MB in the end (delta: 75.9MB). Peak memory consumption was 75.5MB. Max. memory is 8.0GB. * TraceAbstraction took 55794.63ms. Allocated memory was 337.6MB in the beginning and 2.4GB in the end (delta: 2.1GB). Free memory was 203.9MB in the beginning and 1.5GB in the end (delta: -1.3GB). Peak memory consumption was 778.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (16744states) and FLOYD_HOARE automaton (currently 82 states, 25 states before enhancement),while ReachableStatesComputation was computing reachable states (32916 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 255 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 55.7s, OverallIterations: 22, TraceHistogramMax: 79, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 23.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16857 SdHoareTripleChecker+Valid, 10.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16600 mSDsluCounter, 32612 SdHoareTripleChecker+Invalid, 9.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21375 mSDsCounter, 3534 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12579 IncrementalHoareTripleChecker+Invalid, 16113 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3534 mSolverCounterUnsat, 11237 mSDtfsCounter, 12579 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14408 GetRequests, 14215 SyntacticMatches, 4 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3265 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20578occurred in iteration=20, InterpolantAutomatonStates: 117, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.7s AutomataMinimizationTime, 21 MinimizatonAttempts, 33855 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.3s SsaConstructionTime, 3.3s SatisfiabilityAnalysisTime, 12.5s InterpolantComputationTime, 12180 NumberOfCodeBlocks, 12180 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 14275 ConstructedInterpolants, 0 QuantifiedInterpolants, 47845 SizeOfPredicates, 62 NumberOfNonLiveVariables, 28207 ConjunctsInSsa, 128 ConjunctsInUnsatCore, 27 InterpolantComputations, 17 PerfectInterpolantSequences, 331202/332748 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown