/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-79.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:51:47,843 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:51:47,917 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 19:51:47,921 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:51:47,922 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:51:47,949 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:51:47,950 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:51:47,950 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:51:47,951 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:51:47,955 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:51:47,955 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:51:47,955 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:51:47,956 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:51:47,957 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:51:47,957 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:51:47,958 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:51:47,958 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:51:47,958 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:51:47,958 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:51:47,959 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:51:47,960 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:51:47,960 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:51:47,960 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:51:47,960 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:51:47,960 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:51:47,961 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:51:47,961 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:51:47,961 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:51:47,962 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:51:47,962 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:51:47,963 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:51:47,963 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:51:47,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:51:47,963 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:51:47,963 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:51:47,963 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:51:47,964 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:51:47,964 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:51:47,964 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:51:47,964 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:51:47,964 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:51:47,964 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:51:47,964 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:51:47,965 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:51:48,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:51:48,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:51:48,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:51:48,252 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:51:48,253 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:51:48,254 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-79.i [2023-12-15 19:51:49,376 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:51:49,633 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:51:49,633 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-79.i [2023-12-15 19:51:49,656 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/391203ad0/defc66972ed747b79c576b60ce4aba25/FLAG3fdfe153e [2023-12-15 19:51:49,669 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/391203ad0/defc66972ed747b79c576b60ce4aba25 [2023-12-15 19:51:49,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:51:49,672 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:51:49,673 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:51:49,673 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:51:49,677 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:51:49,678 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:51:49" (1/1) ... [2023-12-15 19:51:49,679 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5434c529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:49, skipping insertion in model container [2023-12-15 19:51:49,679 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:51:49" (1/1) ... [2023-12-15 19:51:49,727 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:51:49,894 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-250_file-79.i[916,929] [2023-12-15 19:51:50,083 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:51:50,097 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:51:50,118 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-250_file-79.i[916,929] [2023-12-15 19:51:50,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:51:50,215 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:51:50,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:50 WrapperNode [2023-12-15 19:51:50,216 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:51:50,217 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:51:50,217 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:51:50,217 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:51:50,223 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:50" (1/1) ... [2023-12-15 19:51:50,254 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:50" (1/1) ... [2023-12-15 19:51:50,341 INFO L138 Inliner]: procedures = 26, calls = 116, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 646 [2023-12-15 19:51:50,342 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:51:50,342 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:51:50,342 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:51:50,342 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:51:50,354 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:50" (1/1) ... [2023-12-15 19:51:50,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:50" (1/1) ... [2023-12-15 19:51:50,362 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:50" (1/1) ... [2023-12-15 19:51:50,424 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 19:51:50,424 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:50" (1/1) ... [2023-12-15 19:51:50,424 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:50" (1/1) ... [2023-12-15 19:51:50,451 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:50" (1/1) ... [2023-12-15 19:51:50,455 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:50" (1/1) ... [2023-12-15 19:51:50,480 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:50" (1/1) ... [2023-12-15 19:51:50,485 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:50" (1/1) ... [2023-12-15 19:51:50,493 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:51:50,494 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:51:50,494 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:51:50,494 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:51:50,494 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:50" (1/1) ... [2023-12-15 19:51:50,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:51:50,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:50,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 19:51:50,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 19:51:50,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:51:50,568 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 19:51:50,569 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 19:51:50,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:51:50,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:51:50,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:51:50,685 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:51:50,687 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:51:51,342 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:51:51,393 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:51:51,393 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:51:51,394 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:51:51 BoogieIcfgContainer [2023-12-15 19:51:51,394 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:51:51,396 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:51:51,396 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:51:51,399 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:51:51,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:51:49" (1/3) ... [2023-12-15 19:51:51,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d68236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:51:51, skipping insertion in model container [2023-12-15 19:51:51,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:51:50" (2/3) ... [2023-12-15 19:51:51,401 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d68236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:51:51, skipping insertion in model container [2023-12-15 19:51:51,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:51:51" (3/3) ... [2023-12-15 19:51:51,403 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-79.i [2023-12-15 19:51:51,418 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:51:51,419 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:51:51,479 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:51:51,485 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;@27eba004, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:51:51,486 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:51:51,492 INFO L276 IsEmpty]: Start isEmpty. Operand has 256 states, 150 states have (on average 1.52) internal successors, (228), 151 states have internal predecessors, (228), 103 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2023-12-15 19:51:51,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2023-12-15 19:51:51,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:51:51,526 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:51:51,527 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:51:51,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:51:51,532 INFO L85 PathProgramCache]: Analyzing trace with hash -2129848839, now seen corresponding path program 1 times [2023-12-15 19:51:51,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:51:51,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055328700] [2023-12-15 19:51:51,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:51,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:51:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:51,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:51:51,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055328700] [2023-12-15 19:51:51,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 19:51:51,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255620536] [2023-12-15 19:51:51,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:51,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:51,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:51,933 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:51:51,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 19:51:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:52,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 1380 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 19:51:52,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:51:52,497 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 20808 trivial. 0 not checked. [2023-12-15 19:51:52,498 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:51:52,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255620536] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:51:52,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:51:52,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:51:52,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572148410] [2023-12-15 19:51:52,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:51:52,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:51:52,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:51:52,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:51:52,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:51:52,553 INFO L87 Difference]: Start difference. First operand has 256 states, 150 states have (on average 1.52) internal successors, (228), 151 states have internal predecessors, (228), 103 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) Second operand has 2 states, 2 states have (on average 59.0) internal successors, (118), 2 states have internal predecessors, (118), 2 states have call successors, (103), 2 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 2 states have call successors, (103) [2023-12-15 19:51:52,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:51:52,670 INFO L93 Difference]: Finished difference Result 509 states and 969 transitions. [2023-12-15 19:51:52,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:51:52,673 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 59.0) internal successors, (118), 2 states have internal predecessors, (118), 2 states have call successors, (103), 2 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 2 states have call successors, (103) Word has length 628 [2023-12-15 19:51:52,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:51:52,684 INFO L225 Difference]: With dead ends: 509 [2023-12-15 19:51:52,684 INFO L226 Difference]: Without dead ends: 254 [2023-12-15 19:51:52,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:51:52,694 INFO L413 NwaCegarLoop]: 425 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, 425 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:51:52,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 425 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:51:52,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-12-15 19:51:52,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2023-12-15 19:51:52,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 149 states have (on average 1.4899328859060403) internal successors, (222), 149 states have internal predecessors, (222), 103 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2023-12-15 19:51:52,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 428 transitions. [2023-12-15 19:51:52,776 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 428 transitions. Word has length 628 [2023-12-15 19:51:52,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:51:52,777 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 428 transitions. [2023-12-15 19:51:52,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 59.0) internal successors, (118), 2 states have internal predecessors, (118), 2 states have call successors, (103), 2 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 2 states have call successors, (103) [2023-12-15 19:51:52,778 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 428 transitions. [2023-12-15 19:51:52,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2023-12-15 19:51:52,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:51:52,798 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:51:52,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 19:51:53,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 19:51:53,008 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:51:53,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:51:53,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1545398589, now seen corresponding path program 1 times [2023-12-15 19:51:53,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:51:53,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895999673] [2023-12-15 19:51:53,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:53,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:51:53,107 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:51:53,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1308960555] [2023-12-15 19:51:53,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:53,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:53,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:53,110 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:51:53,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 19:51:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:53,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 1380 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:51:53,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:51:53,587 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-12-15 19:51:53,587 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:51:53,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:51:53,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895999673] [2023-12-15 19:51:53,587 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:51:53,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308960555] [2023-12-15 19:51:53,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308960555] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:51:53,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:51:53,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:51:53,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157459115] [2023-12-15 19:51:53,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:51:53,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:51:53,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:51:53,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:51:53,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:51:53,597 INFO L87 Difference]: Start difference. First operand 254 states and 428 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-15 19:51:53,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:51:53,739 INFO L93 Difference]: Finished difference Result 756 states and 1274 transitions. [2023-12-15 19:51:53,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:51:53,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 628 [2023-12-15 19:51:53,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:51:53,748 INFO L225 Difference]: With dead ends: 756 [2023-12-15 19:51:53,748 INFO L226 Difference]: Without dead ends: 503 [2023-12-15 19:51:53,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 626 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:51:53,750 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 416 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:51:53,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 940 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:51:53,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2023-12-15 19:51:53,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 501. [2023-12-15 19:51:53,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 292 states have (on average 1.4794520547945205) internal successors, (432), 292 states have internal predecessors, (432), 206 states have call successors, (206), 2 states have call predecessors, (206), 2 states have return successors, (206), 206 states have call predecessors, (206), 206 states have call successors, (206) [2023-12-15 19:51:53,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 844 transitions. [2023-12-15 19:51:53,854 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 844 transitions. Word has length 628 [2023-12-15 19:51:53,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:51:53,856 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 844 transitions. [2023-12-15 19:51:53,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-15 19:51:53,857 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 844 transitions. [2023-12-15 19:51:53,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2023-12-15 19:51:53,861 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:51:53,862 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:51:53,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 19:51:54,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 19:51:54,077 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:51:54,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:51:54,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1560917307, now seen corresponding path program 1 times [2023-12-15 19:51:54,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:51:54,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662922424] [2023-12-15 19:51:54,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:54,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:51:54,162 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:51:54,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [809596681] [2023-12-15 19:51:54,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:54,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:54,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:54,165 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:51:54,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 19:51:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:54,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 1380 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:51:54,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:51:54,637 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-12-15 19:51:54,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:51:54,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:51:54,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662922424] [2023-12-15 19:51:54,638 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:51:54,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809596681] [2023-12-15 19:51:54,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809596681] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:51:54,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:51:54,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:51:54,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213487427] [2023-12-15 19:51:54,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:51:54,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:51:54,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:51:54,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:51:54,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:51:54,642 INFO L87 Difference]: Start difference. First operand 501 states and 844 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-15 19:51:54,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:51:54,714 INFO L93 Difference]: Finished difference Result 1261 states and 2126 transitions. [2023-12-15 19:51:54,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:51:54,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 628 [2023-12-15 19:51:54,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:51:54,724 INFO L225 Difference]: With dead ends: 1261 [2023-12-15 19:51:54,725 INFO L226 Difference]: Without dead ends: 761 [2023-12-15 19:51:54,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 626 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:51:54,729 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 196 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:51:54,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 948 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:51:54,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2023-12-15 19:51:54,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 757. [2023-12-15 19:51:54,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 464 states have (on average 1.5129310344827587) internal successors, (702), 466 states have internal predecessors, (702), 288 states have call successors, (288), 4 states have call predecessors, (288), 4 states have return successors, (288), 286 states have call predecessors, (288), 288 states have call successors, (288) [2023-12-15 19:51:54,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1278 transitions. [2023-12-15 19:51:54,827 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1278 transitions. Word has length 628 [2023-12-15 19:51:54,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:51:54,829 INFO L495 AbstractCegarLoop]: Abstraction has 757 states and 1278 transitions. [2023-12-15 19:51:54,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-15 19:51:54,829 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1278 transitions. [2023-12-15 19:51:54,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2023-12-15 19:51:54,837 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:51:54,837 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:51:54,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 19:51:55,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:55,048 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:51:55,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:51:55,048 INFO L85 PathProgramCache]: Analyzing trace with hash -615020312, now seen corresponding path program 1 times [2023-12-15 19:51:55,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:51:55,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137960785] [2023-12-15 19:51:55,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:55,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:51:55,116 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:51:55,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [551490404] [2023-12-15 19:51:55,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:55,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:55,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:55,119 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:51:55,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 19:51:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:55,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 1378 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:51:55,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:51:55,573 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-12-15 19:51:55,573 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:51:55,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:51:55,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137960785] [2023-12-15 19:51:55,573 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:51:55,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551490404] [2023-12-15 19:51:55,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551490404] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:51:55,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:51:55,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:51:55,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214858679] [2023-12-15 19:51:55,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:51:55,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:51:55,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:51:55,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:51:55,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:51:55,576 INFO L87 Difference]: Start difference. First operand 757 states and 1278 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-15 19:51:56,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:51:56,257 INFO L93 Difference]: Finished difference Result 2811 states and 4700 transitions. [2023-12-15 19:51:56,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 19:51:56,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 629 [2023-12-15 19:51:56,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:51:56,272 INFO L225 Difference]: With dead ends: 2811 [2023-12-15 19:51:56,272 INFO L226 Difference]: Without dead ends: 2055 [2023-12-15 19:51:56,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:51:56,276 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 748 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:51:56,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 1100 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 19:51:56,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2055 states. [2023-12-15 19:51:56,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2055 to 941. [2023-12-15 19:51:56,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 648 states have (on average 1.617283950617284) internal successors, (1048), 650 states have internal predecessors, (1048), 288 states have call successors, (288), 4 states have call predecessors, (288), 4 states have return successors, (288), 286 states have call predecessors, (288), 288 states have call successors, (288) [2023-12-15 19:51:56,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1624 transitions. [2023-12-15 19:51:56,469 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1624 transitions. Word has length 629 [2023-12-15 19:51:56,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:51:56,470 INFO L495 AbstractCegarLoop]: Abstraction has 941 states and 1624 transitions. [2023-12-15 19:51:56,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-15 19:51:56,470 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1624 transitions. [2023-12-15 19:51:56,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2023-12-15 19:51:56,475 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:51:56,475 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:51:56,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 19:51:56,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:56,684 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:51:56,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:51:56,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1201826326, now seen corresponding path program 1 times [2023-12-15 19:51:56,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:51:56,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972705636] [2023-12-15 19:51:56,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:56,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:51:56,738 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:51:56,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [771102016] [2023-12-15 19:51:56,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:56,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:56,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:56,740 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:51:56,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 19:51:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:57,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 1379 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:51:57,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:51:57,118 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-12-15 19:51:57,118 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:51:57,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:51:57,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972705636] [2023-12-15 19:51:57,119 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:51:57,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771102016] [2023-12-15 19:51:57,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771102016] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:51:57,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:51:57,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:51:57,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487159506] [2023-12-15 19:51:57,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:51:57,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:51:57,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:51:57,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:51:57,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:51:57,121 INFO L87 Difference]: Start difference. First operand 941 states and 1624 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-15 19:51:57,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:51:57,188 INFO L93 Difference]: Finished difference Result 1904 states and 3270 transitions. [2023-12-15 19:51:57,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:51:57,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 629 [2023-12-15 19:51:57,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:51:57,194 INFO L225 Difference]: With dead ends: 1904 [2023-12-15 19:51:57,195 INFO L226 Difference]: Without dead ends: 964 [2023-12-15 19:51:57,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:51:57,198 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 31 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:51:57,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 832 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:51:57,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2023-12-15 19:51:57,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 963. [2023-12-15 19:51:57,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 662 states have (on average 1.5981873111782476) internal successors, (1058), 665 states have internal predecessors, (1058), 292 states have call successors, (292), 8 states have call predecessors, (292), 8 states have return successors, (292), 289 states have call predecessors, (292), 292 states have call successors, (292) [2023-12-15 19:51:57,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1642 transitions. [2023-12-15 19:51:57,302 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1642 transitions. Word has length 629 [2023-12-15 19:51:57,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:51:57,302 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1642 transitions. [2023-12-15 19:51:57,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-15 19:51:57,303 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1642 transitions. [2023-12-15 19:51:57,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2023-12-15 19:51:57,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:51:57,308 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:51:57,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 19:51:57,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:57,517 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:51:57,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:51:57,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1904260712, now seen corresponding path program 1 times [2023-12-15 19:51:57,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:51:57,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80020315] [2023-12-15 19:51:57,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:57,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:51:57,570 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:51:57,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [157355259] [2023-12-15 19:51:57,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:57,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:57,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:57,572 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:51:57,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 19:51:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:51:57,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 1380 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:51:57,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:51:58,390 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 10188 proven. 183 refuted. 0 times theorem prover too weak. 10641 trivial. 0 not checked. [2023-12-15 19:51:58,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:51:58,826 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 123 proven. 183 refuted. 0 times theorem prover too weak. 20706 trivial. 0 not checked. [2023-12-15 19:51:58,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:51:58,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80020315] [2023-12-15 19:51:58,827 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:51:58,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157355259] [2023-12-15 19:51:58,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157355259] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:51:58,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:51:58,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 19:51:58,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126655555] [2023-12-15 19:51:58,828 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:51:58,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:51:58,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:51:58,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:51:58,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:51:58,831 INFO L87 Difference]: Start difference. First operand 963 states and 1642 transitions. Second operand has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 2 states have call successors, (164), 2 states have call predecessors, (164), 4 states have return successors, (165), 2 states have call predecessors, (165), 2 states have call successors, (165) [2023-12-15 19:51:59,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:51:59,354 INFO L93 Difference]: Finished difference Result 1805 states and 3035 transitions. [2023-12-15 19:51:59,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 19:51:59,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 2 states have call successors, (164), 2 states have call predecessors, (164), 4 states have return successors, (165), 2 states have call predecessors, (165), 2 states have call successors, (165) Word has length 630 [2023-12-15 19:51:59,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:51:59,360 INFO L225 Difference]: With dead ends: 1805 [2023-12-15 19:51:59,360 INFO L226 Difference]: Without dead ends: 849 [2023-12-15 19:51:59,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1262 GetRequests, 1252 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:51:59,363 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 217 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:51:59,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 729 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 19:51:59,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2023-12-15 19:51:59,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 833. [2023-12-15 19:51:59,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 530 states have (on average 1.509433962264151) internal successors, (800), 533 states have internal predecessors, (800), 292 states have call successors, (292), 10 states have call predecessors, (292), 10 states have return successors, (292), 289 states have call predecessors, (292), 292 states have call successors, (292) [2023-12-15 19:51:59,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1384 transitions. [2023-12-15 19:51:59,447 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1384 transitions. Word has length 630 [2023-12-15 19:51:59,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:51:59,448 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1384 transitions. [2023-12-15 19:51:59,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 2 states have call successors, (164), 2 states have call predecessors, (164), 4 states have return successors, (165), 2 states have call predecessors, (165), 2 states have call successors, (165) [2023-12-15 19:51:59,448 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1384 transitions. [2023-12-15 19:51:59,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2023-12-15 19:51:59,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:51:59,453 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:51:59,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 19:51:59,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:59,661 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:51:59,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:51:59,662 INFO L85 PathProgramCache]: Analyzing trace with hash -697118131, now seen corresponding path program 1 times [2023-12-15 19:51:59,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:51:59,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120902070] [2023-12-15 19:51:59,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:59,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:51:59,715 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:51:59,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1748256076] [2023-12-15 19:51:59,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:51:59,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:51:59,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:51:59,717 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:51:59,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 19:52:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:52:00,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 1384 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 19:52:00,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:52:00,332 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-12-15 19:52:00,333 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:52:00,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:52:00,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120902070] [2023-12-15 19:52:00,333 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:52:00,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748256076] [2023-12-15 19:52:00,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748256076] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:52:00,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:52:00,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 19:52:00,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755750175] [2023-12-15 19:52:00,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:52:00,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 19:52:00,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:52:00,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 19:52:00,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:52:00,336 INFO L87 Difference]: Start difference. First operand 833 states and 1384 transitions. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-15 19:52:00,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:52:00,732 INFO L93 Difference]: Finished difference Result 2291 states and 3802 transitions. [2023-12-15 19:52:00,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 19:52:00,732 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 630 [2023-12-15 19:52:00,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:52:00,740 INFO L225 Difference]: With dead ends: 2291 [2023-12-15 19:52:00,740 INFO L226 Difference]: Without dead ends: 1465 [2023-12-15 19:52:00,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 625 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:52:00,744 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 271 mSDsluCounter, 1681 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2328 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:52:00,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 2328 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:52:00,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2023-12-15 19:52:00,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1461. [2023-12-15 19:52:00,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 928 states have (on average 1.5021551724137931) internal successors, (1394), 935 states have internal predecessors, (1394), 512 states have call successors, (512), 20 states have call predecessors, (512), 20 states have return successors, (512), 505 states have call predecessors, (512), 512 states have call successors, (512) [2023-12-15 19:52:00,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 2418 transitions. [2023-12-15 19:52:00,902 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 2418 transitions. Word has length 630 [2023-12-15 19:52:00,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:52:00,903 INFO L495 AbstractCegarLoop]: Abstraction has 1461 states and 2418 transitions. [2023-12-15 19:52:00,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-15 19:52:00,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 2418 transitions. [2023-12-15 19:52:00,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2023-12-15 19:52:00,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:52:00,909 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:52:00,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 19:52:01,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:52:01,117 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:52:01,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:52:01,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1752481999, now seen corresponding path program 1 times [2023-12-15 19:52:01,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:52:01,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203769698] [2023-12-15 19:52:01,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:52:01,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:52:01,171 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:52:01,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [984323564] [2023-12-15 19:52:01,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:52:01,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:52:01,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:52:01,173 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:52:01,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 19:52:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:52:01,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 1384 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:52:01,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:52:02,236 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-12-15 19:52:02,237 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:52:02,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:52:02,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203769698] [2023-12-15 19:52:02,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:52:02,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984323564] [2023-12-15 19:52:02,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984323564] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:52:02,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:52:02,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:52:02,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14492810] [2023-12-15 19:52:02,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:52:02,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:52:02,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:52:02,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:52:02,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:52:02,240 INFO L87 Difference]: Start difference. First operand 1461 states and 2418 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-15 19:52:02,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:52:02,433 INFO L93 Difference]: Finished difference Result 4369 states and 7232 transitions. [2023-12-15 19:52:02,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:52:02,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 630 [2023-12-15 19:52:02,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:52:02,447 INFO L225 Difference]: With dead ends: 4369 [2023-12-15 19:52:02,447 INFO L226 Difference]: Without dead ends: 2915 [2023-12-15 19:52:02,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 628 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:52:02,452 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 104 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:52:02,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 845 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:52:02,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2023-12-15 19:52:02,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 2913. [2023-12-15 19:52:02,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2913 states, 1852 states have (on average 1.4946004319654427) internal successors, (2768), 1865 states have internal predecessors, (2768), 1020 states have call successors, (1020), 40 states have call predecessors, (1020), 40 states have return successors, (1020), 1007 states have call predecessors, (1020), 1020 states have call successors, (1020) [2023-12-15 19:52:02,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2913 states to 2913 states and 4808 transitions. [2023-12-15 19:52:02,768 INFO L78 Accepts]: Start accepts. Automaton has 2913 states and 4808 transitions. Word has length 630 [2023-12-15 19:52:02,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:52:02,769 INFO L495 AbstractCegarLoop]: Abstraction has 2913 states and 4808 transitions. [2023-12-15 19:52:02,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-15 19:52:02,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2913 states and 4808 transitions. [2023-12-15 19:52:02,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2023-12-15 19:52:02,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:52:02,777 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:52:02,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 19:52:02,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 19:52:02,985 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:52:02,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:52:02,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1754307450, now seen corresponding path program 1 times [2023-12-15 19:52:02,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:52:02,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252664985] [2023-12-15 19:52:02,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:52:02,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:52:03,046 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:52:03,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2075868501] [2023-12-15 19:52:03,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:52:03,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:52:03,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:52:03,048 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:52:03,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 19:52:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:52:03,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:52:03,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:52:03,532 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-12-15 19:52:03,532 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:52:03,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:52:03,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252664985] [2023-12-15 19:52:03,533 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:52:03,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075868501] [2023-12-15 19:52:03,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075868501] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:52:03,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:52:03,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:52:03,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131714632] [2023-12-15 19:52:03,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:52:03,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:52:03,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:52:03,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:52:03,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:52:03,537 INFO L87 Difference]: Start difference. First operand 2913 states and 4808 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-15 19:52:03,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:52:03,867 INFO L93 Difference]: Finished difference Result 8701 states and 14354 transitions. [2023-12-15 19:52:03,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:52:03,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 631 [2023-12-15 19:52:03,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:52:03,897 INFO L225 Difference]: With dead ends: 8701 [2023-12-15 19:52:03,897 INFO L226 Difference]: Without dead ends: 5795 [2023-12-15 19:52:03,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 629 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:52:03,909 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 383 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:52:03,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 1121 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:52:03,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5795 states. [2023-12-15 19:52:04,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5795 to 4191. [2023-12-15 19:52:04,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4191 states, 2866 states have (on average 1.5443126308443824) internal successors, (4426), 2883 states have internal predecessors, (4426), 1274 states have call successors, (1274), 50 states have call predecessors, (1274), 50 states have return successors, (1274), 1257 states have call predecessors, (1274), 1274 states have call successors, (1274) [2023-12-15 19:52:04,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4191 states to 4191 states and 6974 transitions. [2023-12-15 19:52:04,425 INFO L78 Accepts]: Start accepts. Automaton has 4191 states and 6974 transitions. Word has length 631 [2023-12-15 19:52:04,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:52:04,426 INFO L495 AbstractCegarLoop]: Abstraction has 4191 states and 6974 transitions. [2023-12-15 19:52:04,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-15 19:52:04,427 INFO L276 IsEmpty]: Start isEmpty. Operand 4191 states and 6974 transitions. [2023-12-15 19:52:04,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2023-12-15 19:52:04,433 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:52:04,434 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:52:04,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 19:52:04,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:52:04,642 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:52:04,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:52:04,643 INFO L85 PathProgramCache]: Analyzing trace with hash -855108806, now seen corresponding path program 1 times [2023-12-15 19:52:04,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:52:04,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191273583] [2023-12-15 19:52:04,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:52:04,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:52:04,696 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:52:04,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1885953035] [2023-12-15 19:52:04,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:52:04,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:52:04,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:52:04,698 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:52:04,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 19:52:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:52:05,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 19:52:05,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:52:05,774 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 5058 proven. 264 refuted. 0 times theorem prover too weak. 15690 trivial. 0 not checked. [2023-12-15 19:52:05,774 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:52:06,298 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 42 proven. 264 refuted. 0 times theorem prover too weak. 20706 trivial. 0 not checked. [2023-12-15 19:52:06,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:52:06,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191273583] [2023-12-15 19:52:06,298 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:52:06,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885953035] [2023-12-15 19:52:06,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885953035] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:52:06,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:52:06,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-15 19:52:06,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566429054] [2023-12-15 19:52:06,299 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:52:06,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 19:52:06,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:52:06,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 19:52:06,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-15 19:52:06,301 INFO L87 Difference]: Start difference. First operand 4191 states and 6974 transitions. Second operand has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 2 states have call successors, (191), 2 states have call predecessors, (191), 4 states have return successors, (192), 2 states have call predecessors, (192), 2 states have call successors, (192) [2023-12-15 19:52:07,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:52:07,190 INFO L93 Difference]: Finished difference Result 6225 states and 10241 transitions. [2023-12-15 19:52:07,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 19:52:07,191 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 2 states have call successors, (191), 2 states have call predecessors, (191), 4 states have return successors, (192), 2 states have call predecessors, (192), 2 states have call successors, (192) Word has length 631 [2023-12-15 19:52:07,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:52:07,212 INFO L225 Difference]: With dead ends: 6225 [2023-12-15 19:52:07,212 INFO L226 Difference]: Without dead ends: 4391 [2023-12-15 19:52:07,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1268 GetRequests, 1253 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2023-12-15 19:52:07,219 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 686 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 489 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:52:07,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 731 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [489 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 19:52:07,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4391 states. [2023-12-15 19:52:07,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4391 to 4271. [2023-12-15 19:52:07,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4271 states, 2926 states have (on average 1.527682843472317) internal successors, (4470), 2943 states have internal predecessors, (4470), 1274 states have call successors, (1274), 70 states have call predecessors, (1274), 70 states have return successors, (1274), 1257 states have call predecessors, (1274), 1274 states have call successors, (1274) [2023-12-15 19:52:07,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4271 states to 4271 states and 7018 transitions. [2023-12-15 19:52:07,653 INFO L78 Accepts]: Start accepts. Automaton has 4271 states and 7018 transitions. Word has length 631 [2023-12-15 19:52:07,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:52:07,654 INFO L495 AbstractCegarLoop]: Abstraction has 4271 states and 7018 transitions. [2023-12-15 19:52:07,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 2 states have call successors, (191), 2 states have call predecessors, (191), 4 states have return successors, (192), 2 states have call predecessors, (192), 2 states have call successors, (192) [2023-12-15 19:52:07,655 INFO L276 IsEmpty]: Start isEmpty. Operand 4271 states and 7018 transitions. [2023-12-15 19:52:07,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2023-12-15 19:52:07,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:52:07,661 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:52:07,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-15 19:52:07,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 19:52:07,869 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:52:07,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:52:07,870 INFO L85 PathProgramCache]: Analyzing trace with hash -64478161, now seen corresponding path program 1 times [2023-12-15 19:52:07,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:52:07,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698677039] [2023-12-15 19:52:07,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:52:07,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:52:07,929 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:52:07,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1759286426] [2023-12-15 19:52:07,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:52:07,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:52:07,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:52:07,931 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:52:07,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 19:52:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:52:08,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 19:52:08,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:52:09,853 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-12-15 19:52:09,853 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:52:09,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:52:09,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698677039] [2023-12-15 19:52:09,854 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:52:09,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759286426] [2023-12-15 19:52:09,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759286426] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:52:09,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:52:09,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:52:09,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265465861] [2023-12-15 19:52:09,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:52:09,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:52:09,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:52:09,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:52:09,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:52:09,856 INFO L87 Difference]: Start difference. First operand 4271 states and 7018 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-15 19:52:10,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:52:10,360 INFO L93 Difference]: Finished difference Result 8537 states and 14026 transitions. [2023-12-15 19:52:10,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:52:10,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 631 [2023-12-15 19:52:10,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:52:10,383 INFO L225 Difference]: With dead ends: 8537 [2023-12-15 19:52:10,384 INFO L226 Difference]: Without dead ends: 4273 [2023-12-15 19:52:10,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:52:10,424 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 218 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:52:10,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 1030 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:52:10,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4273 states. [2023-12-15 19:52:10,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4273 to 4271. [2023-12-15 19:52:10,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4271 states, 2926 states have (on average 1.5235816814764183) internal successors, (4458), 2943 states have internal predecessors, (4458), 1274 states have call successors, (1274), 70 states have call predecessors, (1274), 70 states have return successors, (1274), 1257 states have call predecessors, (1274), 1274 states have call successors, (1274) [2023-12-15 19:52:10,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4271 states to 4271 states and 7006 transitions. [2023-12-15 19:52:10,829 INFO L78 Accepts]: Start accepts. Automaton has 4271 states and 7006 transitions. Word has length 631 [2023-12-15 19:52:10,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:52:10,830 INFO L495 AbstractCegarLoop]: Abstraction has 4271 states and 7006 transitions. [2023-12-15 19:52:10,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-15 19:52:10,831 INFO L276 IsEmpty]: Start isEmpty. Operand 4271 states and 7006 transitions. [2023-12-15 19:52:10,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-12-15 19:52:10,837 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:52:10,837 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:52:10,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 19:52:11,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 19:52:11,045 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:52:11,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:52:11,046 INFO L85 PathProgramCache]: Analyzing trace with hash -190308150, now seen corresponding path program 1 times [2023-12-15 19:52:11,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:52:11,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818953990] [2023-12-15 19:52:11,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:52:11,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:52:11,128 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:52:11,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1900644634] [2023-12-15 19:52:11,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:52:11,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:52:11,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:52:11,130 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:52:11,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 19:52:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:52:11,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:52:11,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:52:11,560 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-12-15 19:52:11,560 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:52:11,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:52:11,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818953990] [2023-12-15 19:52:11,561 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:52:11,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900644634] [2023-12-15 19:52:11,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900644634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:52:11,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:52:11,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:52:11,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937528598] [2023-12-15 19:52:11,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:52:11,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:52:11,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:52:11,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:52:11,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:52:11,563 INFO L87 Difference]: Start difference. First operand 4271 states and 7006 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-15 19:52:11,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:52:11,945 INFO L93 Difference]: Finished difference Result 8535 states and 14001 transitions. [2023-12-15 19:52:11,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:52:11,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 632 [2023-12-15 19:52:11,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:52:11,971 INFO L225 Difference]: With dead ends: 8535 [2023-12-15 19:52:11,971 INFO L226 Difference]: Without dead ends: 4271 [2023-12-15 19:52:11,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 631 GetRequests, 630 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:52:11,985 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 16 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:52:11,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 820 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:52:11,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4271 states. [2023-12-15 19:52:12,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4271 to 4271. [2023-12-15 19:52:12,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4271 states, 2926 states have (on average 1.5167464114832536) internal successors, (4438), 2943 states have internal predecessors, (4438), 1274 states have call successors, (1274), 70 states have call predecessors, (1274), 70 states have return successors, (1274), 1257 states have call predecessors, (1274), 1274 states have call successors, (1274) [2023-12-15 19:52:12,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4271 states to 4271 states and 6986 transitions. [2023-12-15 19:52:12,415 INFO L78 Accepts]: Start accepts. Automaton has 4271 states and 6986 transitions. Word has length 632 [2023-12-15 19:52:12,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:52:12,416 INFO L495 AbstractCegarLoop]: Abstraction has 4271 states and 6986 transitions. [2023-12-15 19:52:12,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-15 19:52:12,417 INFO L276 IsEmpty]: Start isEmpty. Operand 4271 states and 6986 transitions. [2023-12-15 19:52:12,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-12-15 19:52:12,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:52:12,423 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:52:12,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 19:52:12,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 19:52:12,631 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:52:12,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:52:12,631 INFO L85 PathProgramCache]: Analyzing trace with hash 67857288, now seen corresponding path program 1 times [2023-12-15 19:52:12,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:52:12,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828909581] [2023-12-15 19:52:12,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:52:12,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:52:12,680 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:52:12,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [495145157] [2023-12-15 19:52:12,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:52:12,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:52:12,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:52:12,682 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:52:12,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 19:52:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:52:13,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-15 19:52:13,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:52:16,859 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 8946 proven. 333 refuted. 0 times theorem prover too weak. 11733 trivial. 0 not checked. [2023-12-15 19:52:16,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:52:19,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:52:19,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828909581] [2023-12-15 19:52:19,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:52:19,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495145157] [2023-12-15 19:52:19,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495145157] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:52:19,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:52:19,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-12-15 19:52:19,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802163079] [2023-12-15 19:52:19,092 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-15 19:52:19,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-15 19:52:19,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:52:19,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-15 19:52:19,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=526, Unknown=0, NotChecked=0, Total=702 [2023-12-15 19:52:19,096 INFO L87 Difference]: Start difference. First operand 4271 states and 6986 transitions. Second operand has 18 states, 18 states have (on average 7.833333333333333) internal successors, (141), 16 states have internal predecessors, (141), 6 states have call successors, (103), 6 states have call predecessors, (103), 8 states have return successors, (103), 6 states have call predecessors, (103), 6 states have call successors, (103) [2023-12-15 19:52:25,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-15 19:52:30,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-15 19:52:30,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:52:30,893 INFO L93 Difference]: Finished difference Result 10047 states and 16243 transitions. [2023-12-15 19:52:30,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-15 19:52:30,895 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.833333333333333) internal successors, (141), 16 states have internal predecessors, (141), 6 states have call successors, (103), 6 states have call predecessors, (103), 8 states have return successors, (103), 6 states have call predecessors, (103), 6 states have call successors, (103) Word has length 632 [2023-12-15 19:52:30,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:52:30,914 INFO L225 Difference]: With dead ends: 10047 [2023-12-15 19:52:30,915 INFO L226 Difference]: Without dead ends: 5783 [2023-12-15 19:52:30,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 794 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=412, Invalid=994, Unknown=0, NotChecked=0, Total=1406 [2023-12-15 19:52:30,929 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 629 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 197 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-12-15 19:52:30,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 1080 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1075 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2023-12-15 19:52:30,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5783 states. [2023-12-15 19:52:31,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5783 to 5661. [2023-12-15 19:52:31,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5661 states, 4251 states have (on average 1.5354034344860032) internal successors, (6527), 4288 states have internal predecessors, (6527), 1294 states have call successors, (1294), 115 states have call predecessors, (1294), 115 states have return successors, (1294), 1257 states have call predecessors, (1294), 1294 states have call successors, (1294) [2023-12-15 19:52:31,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5661 states to 5661 states and 9115 transitions. [2023-12-15 19:52:31,492 INFO L78 Accepts]: Start accepts. Automaton has 5661 states and 9115 transitions. Word has length 632 [2023-12-15 19:52:31,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:52:31,493 INFO L495 AbstractCegarLoop]: Abstraction has 5661 states and 9115 transitions. [2023-12-15 19:52:31,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.833333333333333) internal successors, (141), 16 states have internal predecessors, (141), 6 states have call successors, (103), 6 states have call predecessors, (103), 8 states have return successors, (103), 6 states have call predecessors, (103), 6 states have call successors, (103) [2023-12-15 19:52:31,494 INFO L276 IsEmpty]: Start isEmpty. Operand 5661 states and 9115 transitions. [2023-12-15 19:52:31,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-12-15 19:52:31,501 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:52:31,502 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:52:31,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 19:52:31,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 19:52:31,713 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:52:31,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:52:31,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1790716200, now seen corresponding path program 1 times [2023-12-15 19:52:31,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:52:31,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52380322] [2023-12-15 19:52:31,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:52:31,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:52:31,772 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:52:31,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1276110516] [2023-12-15 19:52:31,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:52:31,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:52:31,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:52:31,774 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:52:31,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 19:52:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:52:32,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 19:52:32,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:52:36,985 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 9418 proven. 204 refuted. 0 times theorem prover too weak. 11390 trivial. 0 not checked. [2023-12-15 19:52:36,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:52:37,272 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-12-15 19:52:37,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:52:37,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52380322] [2023-12-15 19:52:37,273 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:52:37,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276110516] [2023-12-15 19:52:37,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276110516] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 19:52:37,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:52:37,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-15 19:52:37,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126429984] [2023-12-15 19:52:37,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:52:37,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:52:37,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:52:37,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:52:37,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=51, Unknown=1, NotChecked=0, Total=72 [2023-12-15 19:52:37,275 INFO L87 Difference]: Start difference. First operand 5661 states and 9115 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-15 19:52:38,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:52:38,078 INFO L93 Difference]: Finished difference Result 11363 states and 18287 transitions. [2023-12-15 19:52:38,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:52:38,079 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 632 [2023-12-15 19:52:38,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:52:38,094 INFO L225 Difference]: With dead ends: 11363 [2023-12-15 19:52:38,095 INFO L226 Difference]: Without dead ends: 5709 [2023-12-15 19:52:38,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1262 GetRequests, 1255 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=20, Invalid=51, Unknown=1, NotChecked=0, Total=72 [2023-12-15 19:52:38,108 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 834 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:52:38,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 920 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 19:52:38,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5709 states. [2023-12-15 19:52:38,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5709 to 5681. [2023-12-15 19:52:38,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5681 states, 4267 states have (on average 1.5343332552144364) internal successors, (6547), 4304 states have internal predecessors, (6547), 1294 states have call successors, (1294), 119 states have call predecessors, (1294), 119 states have return successors, (1294), 1257 states have call predecessors, (1294), 1294 states have call successors, (1294) [2023-12-15 19:52:38,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5681 states to 5681 states and 9135 transitions. [2023-12-15 19:52:38,620 INFO L78 Accepts]: Start accepts. Automaton has 5681 states and 9135 transitions. Word has length 632 [2023-12-15 19:52:38,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:52:38,621 INFO L495 AbstractCegarLoop]: Abstraction has 5681 states and 9135 transitions. [2023-12-15 19:52:38,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-15 19:52:38,621 INFO L276 IsEmpty]: Start isEmpty. Operand 5681 states and 9135 transitions. [2023-12-15 19:52:38,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2023-12-15 19:52:38,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:52:38,629 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:52:38,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-15 19:52:38,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:52:38,838 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:52:38,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:52:38,839 INFO L85 PathProgramCache]: Analyzing trace with hash 308635163, now seen corresponding path program 1 times [2023-12-15 19:52:38,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:52:38,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53892978] [2023-12-15 19:52:38,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:52:38,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:52:38,885 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:52:38,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [513518556] [2023-12-15 19:52:38,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:52:38,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:52:38,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:52:38,887 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:52:38,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 19:52:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:52:39,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 19:52:39,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:52:39,981 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 9276 proven. 207 refuted. 0 times theorem prover too weak. 11529 trivial. 0 not checked. [2023-12-15 19:52:39,981 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:52:40,798 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 99 proven. 207 refuted. 0 times theorem prover too weak. 20706 trivial. 0 not checked. [2023-12-15 19:52:40,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:52:40,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53892978] [2023-12-15 19:52:40,799 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:52:40,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513518556] [2023-12-15 19:52:40,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513518556] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:52:40,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:52:40,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2023-12-15 19:52:40,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122993361] [2023-12-15 19:52:40,800 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:52:40,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-15 19:52:40,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:52:40,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-15 19:52:40,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-12-15 19:52:40,802 INFO L87 Difference]: Start difference. First operand 5681 states and 9135 transitions. Second operand has 14 states, 14 states have (on average 14.357142857142858) internal successors, (201), 14 states have internal predecessors, (201), 3 states have call successors, (172), 2 states have call predecessors, (172), 4 states have return successors, (173), 3 states have call predecessors, (173), 3 states have call successors, (173) Received shutdown request... [2023-12-15 19:52:42,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-15 19:52:42,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1287 GetRequests, 1254 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=301, Invalid=889, Unknown=0, NotChecked=0, Total=1190 [2023-12-15 19:52:42,971 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 1053 mSDsluCounter, 1864 mSDsCounter, 0 mSdLazyCounter, 1616 mSolverCounterSat, 616 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 2246 SdHoareTripleChecker+Invalid, 2232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 616 IncrementalHoareTripleChecker+Valid, 1616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:52:42,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 2246 Invalid, 2232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [616 Valid, 1616 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 19:52:42,972 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:52:42,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-15 19:52:42,987 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:52:42,988 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:52:43,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 19:52:43,181 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (5681states) and FLOYD_HOARE automaton (currently 25 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (8813 states constructed, input type IntersectNwa). [2023-12-15 19:52:43,185 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:52:43,187 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:52:43,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:52:43 BoogieIcfgContainer [2023-12-15 19:52:43,189 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:52:43,189 INFO L158 Benchmark]: Toolchain (without parser) took 53517.45ms. Allocated memory was 251.7MB in the beginning and 874.5MB in the end (delta: 622.9MB). Free memory was 199.7MB in the beginning and 700.6MB in the end (delta: -500.9MB). Peak memory consumption was 538.7MB. Max. memory is 8.0GB. [2023-12-15 19:52:43,190 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 192.9MB. Free memory is still 144.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:52:43,190 INFO L158 Benchmark]: CACSL2BoogieTranslator took 543.23ms. Allocated memory is still 251.7MB. Free memory was 199.4MB in the beginning and 173.2MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2023-12-15 19:52:43,190 INFO L158 Benchmark]: Boogie Procedure Inliner took 124.83ms. Allocated memory is still 251.7MB. Free memory was 173.2MB in the beginning and 214.6MB in the end (delta: -41.4MB). Peak memory consumption was 13.9MB. Max. memory is 8.0GB. [2023-12-15 19:52:43,190 INFO L158 Benchmark]: Boogie Preprocessor took 150.65ms. Allocated memory is still 251.7MB. Free memory was 214.6MB in the beginning and 201.5MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-15 19:52:43,190 INFO L158 Benchmark]: RCFGBuilder took 900.41ms. Allocated memory is still 251.7MB. Free memory was 201.5MB in the beginning and 137.5MB in the end (delta: 64.0MB). Peak memory consumption was 64.0MB. Max. memory is 8.0GB. [2023-12-15 19:52:43,191 INFO L158 Benchmark]: TraceAbstraction took 51792.71ms. Allocated memory was 251.7MB in the beginning and 874.5MB in the end (delta: 622.9MB). Free memory was 137.0MB in the beginning and 700.6MB in the end (delta: -563.6MB). Peak memory consumption was 474.5MB. Max. memory is 8.0GB. [2023-12-15 19:52:43,192 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 192.9MB. Free memory is still 144.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 543.23ms. Allocated memory is still 251.7MB. Free memory was 199.4MB in the beginning and 173.2MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 124.83ms. Allocated memory is still 251.7MB. Free memory was 173.2MB in the beginning and 214.6MB in the end (delta: -41.4MB). Peak memory consumption was 13.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 150.65ms. Allocated memory is still 251.7MB. Free memory was 214.6MB in the beginning and 201.5MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * RCFGBuilder took 900.41ms. Allocated memory is still 251.7MB. Free memory was 201.5MB in the beginning and 137.5MB in the end (delta: 64.0MB). Peak memory consumption was 64.0MB. Max. memory is 8.0GB. * TraceAbstraction took 51792.71ms. Allocated memory was 251.7MB in the beginning and 874.5MB in the end (delta: 622.9MB). Free memory was 137.0MB in the beginning and 700.6MB in the end (delta: -563.6MB). Peak memory consumption was 474.5MB. 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 (5681states) and FLOYD_HOARE automaton (currently 25 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (8813 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 256 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 51.7s, OverallIterations: 15, TraceHistogramMax: 103, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 19.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 5948 SdHoareTripleChecker+Valid, 13.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5802 mSDsluCounter, 16095 SdHoareTripleChecker+Invalid, 11.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9319 mSDsCounter, 1647 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4870 IncrementalHoareTripleChecker+Invalid, 6518 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1647 mSolverCounterUnsat, 6776 mSDtfsCounter, 4870 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12198 GetRequests, 12080 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5681occurred in iteration=14, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.0s AutomataMinimizationTime, 14 MinimizatonAttempts, 3019 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 17.7s InterpolantComputationTime, 10082 NumberOfCodeBlocks, 10082 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 11961 ConstructedInterpolants, 10 QuantifiedInterpolants, 30705 SizeOfPredicates, 36 NumberOfNonLiveVariables, 20758 ConjunctsInSsa, 99 ConjunctsInUnsatCore, 19 InterpolantComputations, 11 PerfectInterpolantSequences, 397383/399228 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