/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-500_file-57.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 07:43:38,901 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 07:43:38,984 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 07:43:38,988 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 07:43:38,989 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 07:43:39,011 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 07:43:39,012 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 07:43:39,012 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 07:43:39,013 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 07:43:39,016 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 07:43:39,016 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 07:43:39,017 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 07:43:39,018 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 07:43:39,019 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 07:43:39,019 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 07:43:39,019 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 07:43:39,019 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 07:43:39,020 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 07:43:39,020 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 07:43:39,020 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 07:43:39,020 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 07:43:39,021 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 07:43:39,021 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 07:43:39,021 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 07:43:39,021 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 07:43:39,021 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 07:43:39,022 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 07:43:39,022 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 07:43:39,022 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 07:43:39,023 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 07:43:39,023 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 07:43:39,024 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 07:43:39,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:43:39,024 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 07:43:39,024 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 07:43:39,024 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 07:43:39,024 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 07:43:39,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 07:43:39,025 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 07:43:39,025 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 07:43:39,025 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 07:43:39,025 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 07:43:39,025 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 07:43:39,025 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 07:43:39,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 07:43:39,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 07:43:39,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 07:43:39,234 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 07:43:39,235 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 07:43:39,236 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-57.i [2023-12-19 07:43:40,316 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 07:43:40,620 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 07:43:40,621 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-57.i [2023-12-19 07:43:40,635 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/402d9fa65/092c6279c25642e492d4c56eb0dd2f4e/FLAGa0b506901 [2023-12-19 07:43:40,649 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/402d9fa65/092c6279c25642e492d4c56eb0dd2f4e [2023-12-19 07:43:40,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 07:43:40,652 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 07:43:40,655 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 07:43:40,655 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 07:43:40,659 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 07:43:40,659 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:43:40" (1/1) ... [2023-12-19 07:43:40,660 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63599dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:43:40, skipping insertion in model container [2023-12-19 07:43:40,660 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:43:40" (1/1) ... [2023-12-19 07:43:40,708 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 07:43:40,842 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-57.i[916,929] [2023-12-19 07:43:40,991 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:43:41,017 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 07:43:41,033 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-57.i[916,929] [2023-12-19 07:43:41,151 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:43:41,168 INFO L206 MainTranslator]: Completed translation [2023-12-19 07:43:41,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:43:41 WrapperNode [2023-12-19 07:43:41,168 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 07:43:41,170 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 07:43:41,170 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 07:43:41,170 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 07:43:41,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:43:41" (1/1) ... [2023-12-19 07:43:41,198 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:43:41" (1/1) ... [2023-12-19 07:43:41,296 INFO L138 Inliner]: procedures = 26, calls = 126, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 925 [2023-12-19 07:43:41,297 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 07:43:41,298 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 07:43:41,298 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 07:43:41,298 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 07:43:41,307 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:43:41" (1/1) ... [2023-12-19 07:43:41,308 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:43:41" (1/1) ... [2023-12-19 07:43:41,361 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:43:41" (1/1) ... [2023-12-19 07:43:41,415 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 07:43:41,416 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:43:41" (1/1) ... [2023-12-19 07:43:41,416 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:43:41" (1/1) ... [2023-12-19 07:43:41,457 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:43:41" (1/1) ... [2023-12-19 07:43:41,462 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:43:41" (1/1) ... [2023-12-19 07:43:41,470 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:43:41" (1/1) ... [2023-12-19 07:43:41,493 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:43:41" (1/1) ... [2023-12-19 07:43:41,507 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 07:43:41,508 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 07:43:41,508 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 07:43:41,508 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 07:43:41,509 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:43:41" (1/1) ... [2023-12-19 07:43:41,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:43:41,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:43:41,534 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 07:43:41,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 07:43:41,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 07:43:41,556 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 07:43:41,556 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 07:43:41,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 07:43:41,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 07:43:41,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 07:43:41,713 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 07:43:41,716 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 07:43:42,544 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 07:43:42,588 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 07:43:42,589 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 07:43:42,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:43:42 BoogieIcfgContainer [2023-12-19 07:43:42,589 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 07:43:42,591 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 07:43:42,591 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 07:43:42,596 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 07:43:42,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 07:43:40" (1/3) ... [2023-12-19 07:43:42,597 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbe8588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:43:42, skipping insertion in model container [2023-12-19 07:43:42,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:43:41" (2/3) ... [2023-12-19 07:43:42,597 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbe8588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:43:42, skipping insertion in model container [2023-12-19 07:43:42,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:43:42" (3/3) ... [2023-12-19 07:43:42,598 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-57.i [2023-12-19 07:43:42,610 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 07:43:42,610 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 07:43:42,650 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 07:43:42,654 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;@2ebc2c98, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 07:43:42,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 07:43:42,659 INFO L276 IsEmpty]: Start isEmpty. Operand has 345 states, 229 states have (on average 1.6331877729257642) internal successors, (374), 230 states have internal predecessors, (374), 113 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 113 states have call predecessors, (113), 113 states have call successors, (113) [2023-12-19 07:43:42,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2023-12-19 07:43:42,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:43:42,707 INFO L195 NwaCegarLoop]: trace histogram [113, 113, 113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:43:42,707 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:43:42,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:43:42,711 INFO L85 PathProgramCache]: Analyzing trace with hash 127803526, now seen corresponding path program 1 times [2023-12-19 07:43:42,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:43:42,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850876259] [2023-12-19 07:43:42,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:43:42,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:43:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:43:42,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:43:42,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850876259] [2023-12-19 07:43:42,990 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 07:43:42,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906944148] [2023-12-19 07:43:42,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:43:42,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:43:42,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:43:43,012 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:43:43,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 07:43:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:43:43,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 07:43:43,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:43:43,563 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 25088 trivial. 0 not checked. [2023-12-19 07:43:43,563 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:43:43,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906944148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:43:43,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:43:43,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:43:43,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328353131] [2023-12-19 07:43:43,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:43:43,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 07:43:43,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:43:43,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 07:43:43,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:43:43,602 INFO L87 Difference]: Start difference. First operand has 345 states, 229 states have (on average 1.6331877729257642) internal successors, (374), 230 states have internal predecessors, (374), 113 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 113 states have call predecessors, (113), 113 states have call successors, (113) Second operand has 2 states, 2 states have (on average 84.5) internal successors, (169), 2 states have internal predecessors, (169), 2 states have call successors, (113), 2 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 2 states have call successors, (113) [2023-12-19 07:43:43,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:43:43,693 INFO L93 Difference]: Finished difference Result 687 states and 1311 transitions. [2023-12-19 07:43:43,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 07:43:43,695 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 84.5) internal successors, (169), 2 states have internal predecessors, (169), 2 states have call successors, (113), 2 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 2 states have call successors, (113) Word has length 729 [2023-12-19 07:43:43,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:43:43,711 INFO L225 Difference]: With dead ends: 687 [2023-12-19 07:43:43,711 INFO L226 Difference]: Without dead ends: 343 [2023-12-19 07:43:43,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:43:43,724 INFO L413 NwaCegarLoop]: 592 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, 592 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:43:43,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 592 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:43:43,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-12-19 07:43:43,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2023-12-19 07:43:43,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 228 states have (on average 1.618421052631579) internal successors, (369), 228 states have internal predecessors, (369), 113 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 113 states have call predecessors, (113), 113 states have call successors, (113) [2023-12-19 07:43:43,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 595 transitions. [2023-12-19 07:43:43,839 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 595 transitions. Word has length 729 [2023-12-19 07:43:43,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:43:43,839 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 595 transitions. [2023-12-19 07:43:43,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 84.5) internal successors, (169), 2 states have internal predecessors, (169), 2 states have call successors, (113), 2 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 2 states have call successors, (113) [2023-12-19 07:43:43,840 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 595 transitions. [2023-12-19 07:43:43,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2023-12-19 07:43:43,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:43:43,852 INFO L195 NwaCegarLoop]: trace histogram [113, 113, 113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:43:43,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 07:43:44,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 07:43:44,068 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:43:44,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:43:44,069 INFO L85 PathProgramCache]: Analyzing trace with hash 628332928, now seen corresponding path program 1 times [2023-12-19 07:43:44,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:43:44,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437557614] [2023-12-19 07:43:44,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:43:44,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:43:44,195 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:43:44,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [774702749] [2023-12-19 07:43:44,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:43:44,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:43:44,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:43:44,197 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:43:44,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 07:43:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:43:44,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:43:44,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:43:44,750 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25312 trivial. 0 not checked. [2023-12-19 07:43:44,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:43:44,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:43:44,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437557614] [2023-12-19 07:43:44,751 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:43:44,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774702749] [2023-12-19 07:43:44,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774702749] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:43:44,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:43:44,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:43:44,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828668666] [2023-12-19 07:43:44,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:43:44,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:43:44,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:43:44,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:43:44,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:43:44,757 INFO L87 Difference]: Start difference. First operand 343 states and 595 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 1 states have call successors, (113) [2023-12-19 07:43:44,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:43:44,983 INFO L93 Difference]: Finished difference Result 1458 states and 2553 transitions. [2023-12-19 07:43:44,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 07:43:44,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 1 states have call successors, (113) Word has length 729 [2023-12-19 07:43:44,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:43:44,991 INFO L225 Difference]: With dead ends: 1458 [2023-12-19 07:43:44,991 INFO L226 Difference]: Without dead ends: 1116 [2023-12-19 07:43:44,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 727 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:43:44,993 INFO L413 NwaCegarLoop]: 1251 mSDtfsCounter, 1254 mSDsluCounter, 1798 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 3049 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 07:43:44,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1254 Valid, 3049 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 07:43:44,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2023-12-19 07:43:45,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 1108. [2023-12-19 07:43:45,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 801 states have (on average 1.6754057428214733) internal successors, (1342), 803 states have internal predecessors, (1342), 302 states have call successors, (302), 4 states have call predecessors, (302), 4 states have return successors, (302), 300 states have call predecessors, (302), 302 states have call successors, (302) [2023-12-19 07:43:45,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1946 transitions. [2023-12-19 07:43:45,087 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1946 transitions. Word has length 729 [2023-12-19 07:43:45,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:43:45,089 INFO L495 AbstractCegarLoop]: Abstraction has 1108 states and 1946 transitions. [2023-12-19 07:43:45,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 1 states have call successors, (113) [2023-12-19 07:43:45,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1946 transitions. [2023-12-19 07:43:45,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2023-12-19 07:43:45,097 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:43:45,097 INFO L195 NwaCegarLoop]: trace histogram [113, 113, 113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:43:45,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 07:43:45,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 07:43:45,305 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:43:45,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:43:45,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1979718146, now seen corresponding path program 1 times [2023-12-19 07:43:45,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:43:45,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013663944] [2023-12-19 07:43:45,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:43:45,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:43:45,393 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:43:45,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [918235571] [2023-12-19 07:43:45,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:43:45,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:43:45,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:43:45,401 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:43:45,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 07:43:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:43:45,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 1650 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:43:45,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:43:45,811 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25312 trivial. 0 not checked. [2023-12-19 07:43:45,811 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:43:45,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:43:45,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013663944] [2023-12-19 07:43:45,812 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:43:45,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918235571] [2023-12-19 07:43:45,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918235571] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:43:45,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:43:45,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:43:45,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738632514] [2023-12-19 07:43:45,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:43:45,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:43:45,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:43:45,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:43:45,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:43:45,814 INFO L87 Difference]: Start difference. First operand 1108 states and 1946 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 1 states have call successors, (113) [2023-12-19 07:43:45,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:43:45,913 INFO L93 Difference]: Finished difference Result 3015 states and 5292 transitions. [2023-12-19 07:43:45,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:43:45,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 1 states have call successors, (113) Word has length 729 [2023-12-19 07:43:45,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:43:45,927 INFO L225 Difference]: With dead ends: 3015 [2023-12-19 07:43:45,927 INFO L226 Difference]: Without dead ends: 1908 [2023-12-19 07:43:45,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:43:45,936 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 353 mSDsluCounter, 1253 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1945 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:43:45,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 1945 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:43:45,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2023-12-19 07:43:46,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1904. [2023-12-19 07:43:46,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1904 states, 1399 states have (on average 1.675482487491065) internal successors, (2344), 1405 states have internal predecessors, (2344), 496 states have call successors, (496), 8 states have call predecessors, (496), 8 states have return successors, (496), 490 states have call predecessors, (496), 496 states have call successors, (496) [2023-12-19 07:43:46,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 3336 transitions. [2023-12-19 07:43:46,060 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 3336 transitions. Word has length 729 [2023-12-19 07:43:46,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:43:46,062 INFO L495 AbstractCegarLoop]: Abstraction has 1904 states and 3336 transitions. [2023-12-19 07:43:46,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 1 states have call successors, (113) [2023-12-19 07:43:46,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 3336 transitions. [2023-12-19 07:43:46,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2023-12-19 07:43:46,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:43:46,068 INFO L195 NwaCegarLoop]: trace histogram [113, 113, 113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:43:46,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 07:43:46,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:43:46,277 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:43:46,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:43:46,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1338607120, now seen corresponding path program 1 times [2023-12-19 07:43:46,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:43:46,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252626236] [2023-12-19 07:43:46,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:43:46,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:43:46,331 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:43:46,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1429300943] [2023-12-19 07:43:46,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:43:46,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:43:46,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:43:46,333 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:43:46,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 07:43:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:43:46,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 1650 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:43:46,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:43:46,982 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 11362 proven. 111 refuted. 0 times theorem prover too weak. 13839 trivial. 0 not checked. [2023-12-19 07:43:46,983 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:43:47,324 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 225 proven. 111 refuted. 0 times theorem prover too weak. 24976 trivial. 0 not checked. [2023-12-19 07:43:47,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:43:47,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252626236] [2023-12-19 07:43:47,325 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:43:47,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429300943] [2023-12-19 07:43:47,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429300943] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:43:47,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:43:47,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:43:47,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862904409] [2023-12-19 07:43:47,326 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:43:47,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:43:47,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:43:47,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:43:47,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:43:47,328 INFO L87 Difference]: Start difference. First operand 1904 states and 3336 transitions. Second operand has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 2 states have call successors, (150), 2 states have call predecessors, (150), 4 states have return successors, (151), 2 states have call predecessors, (151), 2 states have call successors, (151) [2023-12-19 07:43:48,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:43:48,168 INFO L93 Difference]: Finished difference Result 3959 states and 6895 transitions. [2023-12-19 07:43:48,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:43:48,169 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 2 states have call successors, (150), 2 states have call predecessors, (150), 4 states have return successors, (151), 2 states have call predecessors, (151), 2 states have call successors, (151) Word has length 729 [2023-12-19 07:43:48,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:43:48,177 INFO L225 Difference]: With dead ends: 3959 [2023-12-19 07:43:48,177 INFO L226 Difference]: Without dead ends: 2056 [2023-12-19 07:43:48,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1460 GetRequests, 1450 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:43:48,182 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 892 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 07:43:48,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [967 Valid, 1363 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 07:43:48,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2023-12-19 07:43:48,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 2035. [2023-12-19 07:43:48,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2035 states, 1452 states have (on average 1.6398071625344353) internal successors, (2381), 1459 states have internal predecessors, (2381), 571 states have call successors, (571), 11 states have call predecessors, (571), 11 states have return successors, (571), 564 states have call predecessors, (571), 571 states have call successors, (571) [2023-12-19 07:43:48,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 3523 transitions. [2023-12-19 07:43:48,280 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 3523 transitions. Word has length 729 [2023-12-19 07:43:48,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:43:48,281 INFO L495 AbstractCegarLoop]: Abstraction has 2035 states and 3523 transitions. [2023-12-19 07:43:48,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 2 states have call successors, (150), 2 states have call predecessors, (150), 4 states have return successors, (151), 2 states have call predecessors, (151), 2 states have call successors, (151) [2023-12-19 07:43:48,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 3523 transitions. [2023-12-19 07:43:48,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2023-12-19 07:43:48,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:43:48,287 INFO L195 NwaCegarLoop]: trace histogram [113, 113, 113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:43:48,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 07:43:48,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:43:48,500 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:43:48,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:43:48,501 INFO L85 PathProgramCache]: Analyzing trace with hash -584620914, now seen corresponding path program 1 times [2023-12-19 07:43:48,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:43:48,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973811798] [2023-12-19 07:43:48,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:43:48,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:43:48,567 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:43:48,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [139725723] [2023-12-19 07:43:48,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:43:48,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:43:48,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:43:48,569 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:43:48,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 07:43:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:43:48,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 1649 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 07:43:48,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:43:49,388 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 10677 proven. 63 refuted. 0 times theorem prover too weak. 14572 trivial. 0 not checked. [2023-12-19 07:43:49,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:43:49,747 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 273 proven. 63 refuted. 0 times theorem prover too weak. 24976 trivial. 0 not checked. [2023-12-19 07:43:49,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:43:49,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973811798] [2023-12-19 07:43:49,748 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:43:49,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139725723] [2023-12-19 07:43:49,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139725723] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:43:49,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:43:49,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-19 07:43:49,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116342579] [2023-12-19 07:43:49,748 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:43:49,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 07:43:49,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:43:49,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 07:43:49,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:43:49,750 INFO L87 Difference]: Start difference. First operand 2035 states and 3523 transitions. Second operand has 12 states, 12 states have (on average 19.25) internal successors, (231), 12 states have internal predecessors, (231), 5 states have call successors, (143), 3 states have call predecessors, (143), 5 states have return successors, (143), 5 states have call predecessors, (143), 5 states have call successors, (143) [2023-12-19 07:43:50,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:43:50,696 INFO L93 Difference]: Finished difference Result 3974 states and 6874 transitions. [2023-12-19 07:43:50,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 07:43:50,698 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.25) internal successors, (231), 12 states have internal predecessors, (231), 5 states have call successors, (143), 3 states have call predecessors, (143), 5 states have return successors, (143), 5 states have call predecessors, (143), 5 states have call successors, (143) Word has length 729 [2023-12-19 07:43:50,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:43:50,710 INFO L225 Difference]: With dead ends: 3974 [2023-12-19 07:43:50,710 INFO L226 Difference]: Without dead ends: 2063 [2023-12-19 07:43:50,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1460 GetRequests, 1446 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2023-12-19 07:43:50,717 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 1037 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 07:43:50,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 1810 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 07:43:50,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2063 states. [2023-12-19 07:43:50,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2063 to 2043. [2023-12-19 07:43:50,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2043 states, 1458 states have (on average 1.631687242798354) internal successors, (2379), 1465 states have internal predecessors, (2379), 571 states have call successors, (571), 13 states have call predecessors, (571), 13 states have return successors, (571), 564 states have call predecessors, (571), 571 states have call successors, (571) [2023-12-19 07:43:50,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2043 states to 2043 states and 3521 transitions. [2023-12-19 07:43:50,895 INFO L78 Accepts]: Start accepts. Automaton has 2043 states and 3521 transitions. Word has length 729 [2023-12-19 07:43:50,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:43:50,896 INFO L495 AbstractCegarLoop]: Abstraction has 2043 states and 3521 transitions. [2023-12-19 07:43:50,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.25) internal successors, (231), 12 states have internal predecessors, (231), 5 states have call successors, (143), 3 states have call predecessors, (143), 5 states have return successors, (143), 5 states have call predecessors, (143), 5 states have call successors, (143) [2023-12-19 07:43:50,897 INFO L276 IsEmpty]: Start isEmpty. Operand 2043 states and 3521 transitions. [2023-12-19 07:43:50,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2023-12-19 07:43:50,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:43:50,905 INFO L195 NwaCegarLoop]: trace histogram [113, 113, 113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:43:50,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 07:43:51,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:43:51,112 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:43:51,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:43:51,113 INFO L85 PathProgramCache]: Analyzing trace with hash -639013812, now seen corresponding path program 1 times [2023-12-19 07:43:51,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:43:51,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228196053] [2023-12-19 07:43:51,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:43:51,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:43:51,205 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:43:51,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [686959397] [2023-12-19 07:43:51,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:43:51,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:43:51,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:43:51,210 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:43:51,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 07:43:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:43:51,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 1649 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:43:51,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:43:51,777 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 8212 proven. 66 refuted. 0 times theorem prover too weak. 17034 trivial. 0 not checked. [2023-12-19 07:43:51,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:43:52,102 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 270 proven. 66 refuted. 0 times theorem prover too weak. 24976 trivial. 0 not checked. [2023-12-19 07:43:52,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:43:52,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228196053] [2023-12-19 07:43:52,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:43:52,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686959397] [2023-12-19 07:43:52,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686959397] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:43:52,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:43:52,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:43:52,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228375140] [2023-12-19 07:43:52,104 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:43:52,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:43:52,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:43:52,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:43:52,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:43:52,106 INFO L87 Difference]: Start difference. First operand 2043 states and 3521 transitions. Second operand has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 2 states have call successors, (135), 2 states have call predecessors, (135), 4 states have return successors, (136), 2 states have call predecessors, (136), 2 states have call successors, (136) [2023-12-19 07:43:52,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:43:52,673 INFO L93 Difference]: Finished difference Result 3994 states and 6874 transitions. [2023-12-19 07:43:52,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:43:52,674 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 2 states have call successors, (135), 2 states have call predecessors, (135), 4 states have return successors, (136), 2 states have call predecessors, (136), 2 states have call successors, (136) Word has length 729 [2023-12-19 07:43:52,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:43:52,684 INFO L225 Difference]: With dead ends: 3994 [2023-12-19 07:43:52,684 INFO L226 Difference]: Without dead ends: 2075 [2023-12-19 07:43:52,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1460 GetRequests, 1450 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:43:52,691 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 712 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:43:52,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 1178 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:43:52,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2023-12-19 07:43:52,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 2051. [2023-12-19 07:43:52,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2051 states, 1464 states have (on average 1.6236338797814207) internal successors, (2377), 1471 states have internal predecessors, (2377), 571 states have call successors, (571), 15 states have call predecessors, (571), 15 states have return successors, (571), 564 states have call predecessors, (571), 571 states have call successors, (571) [2023-12-19 07:43:52,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2051 states to 2051 states and 3519 transitions. [2023-12-19 07:43:52,891 INFO L78 Accepts]: Start accepts. Automaton has 2051 states and 3519 transitions. Word has length 729 [2023-12-19 07:43:52,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:43:52,892 INFO L495 AbstractCegarLoop]: Abstraction has 2051 states and 3519 transitions. [2023-12-19 07:43:52,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 2 states have call successors, (135), 2 states have call predecessors, (135), 4 states have return successors, (136), 2 states have call predecessors, (136), 2 states have call successors, (136) [2023-12-19 07:43:52,893 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states and 3519 transitions. [2023-12-19 07:43:52,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2023-12-19 07:43:52,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:43:52,900 INFO L195 NwaCegarLoop]: trace histogram [113, 113, 113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:43:52,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 07:43:53,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:43:53,110 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:43:53,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:43:53,111 INFO L85 PathProgramCache]: Analyzing trace with hash -205284726, now seen corresponding path program 1 times [2023-12-19 07:43:53,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:43:53,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008534602] [2023-12-19 07:43:53,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:43:53,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:43:53,172 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:43:53,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872363187] [2023-12-19 07:43:53,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:43:53,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:43:53,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:43:53,193 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:43:53,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 07:43:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:43:53,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 1650 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:43:53,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:43:53,652 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25312 trivial. 0 not checked. [2023-12-19 07:43:53,653 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:43:53,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:43:53,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008534602] [2023-12-19 07:43:53,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:43:53,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872363187] [2023-12-19 07:43:53,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872363187] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:43:53,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:43:53,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:43:53,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184605944] [2023-12-19 07:43:53,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:43:53,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:43:53,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:43:53,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:43:53,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:43:53,655 INFO L87 Difference]: Start difference. First operand 2051 states and 3519 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 1 states have call successors, (113) [2023-12-19 07:43:53,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:43:53,788 INFO L93 Difference]: Finished difference Result 5505 states and 9514 transitions. [2023-12-19 07:43:53,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:43:53,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 1 states have call successors, (113) Word has length 729 [2023-12-19 07:43:53,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:43:53,808 INFO L225 Difference]: With dead ends: 5505 [2023-12-19 07:43:53,808 INFO L226 Difference]: Without dead ends: 3538 [2023-12-19 07:43:53,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:43:53,817 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 355 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 2057 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:43:53,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 2057 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:43:53,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3538 states. [2023-12-19 07:43:54,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3538 to 3528. [2023-12-19 07:43:54,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 2676 states have (on average 1.6629297458893872) internal successors, (4450), 2691 states have internal predecessors, (4450), 827 states have call successors, (827), 24 states have call predecessors, (827), 24 states have return successors, (827), 812 states have call predecessors, (827), 827 states have call successors, (827) [2023-12-19 07:43:54,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 6104 transitions. [2023-12-19 07:43:54,115 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 6104 transitions. Word has length 729 [2023-12-19 07:43:54,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:43:54,116 INFO L495 AbstractCegarLoop]: Abstraction has 3528 states and 6104 transitions. [2023-12-19 07:43:54,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 1 states have call successors, (113) [2023-12-19 07:43:54,116 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 6104 transitions. [2023-12-19 07:43:54,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 731 [2023-12-19 07:43:54,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:43:54,126 INFO L195 NwaCegarLoop]: trace histogram [113, 113, 113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:43:54,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 07:43:54,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:43:54,336 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:43:54,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:43:54,336 INFO L85 PathProgramCache]: Analyzing trace with hash 103191878, now seen corresponding path program 1 times [2023-12-19 07:43:54,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:43:54,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508054048] [2023-12-19 07:43:54,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:43:54,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:43:54,396 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:43:54,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2027185119] [2023-12-19 07:43:54,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:43:54,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:43:54,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:43:54,413 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:43:54,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 07:43:54,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:43:54,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 1649 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:43:54,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:43:55,298 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 11286 proven. 225 refuted. 0 times theorem prover too weak. 13801 trivial. 0 not checked. [2023-12-19 07:43:55,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:43:55,737 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 111 proven. 225 refuted. 0 times theorem prover too weak. 24976 trivial. 0 not checked. [2023-12-19 07:43:55,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:43:55,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508054048] [2023-12-19 07:43:55,738 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:43:55,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027185119] [2023-12-19 07:43:55,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027185119] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:43:55,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:43:55,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:43:55,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183995431] [2023-12-19 07:43:55,738 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:43:55,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:43:55,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:43:55,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:43:55,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:43:55,740 INFO L87 Difference]: Start difference. First operand 3528 states and 6104 transitions. Second operand has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 2 states have call successors, (188), 2 states have call predecessors, (188), 4 states have return successors, (189), 2 states have call predecessors, (189), 2 states have call successors, (189) [2023-12-19 07:43:56,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:43:56,349 INFO L93 Difference]: Finished difference Result 7024 states and 12094 transitions. [2023-12-19 07:43:56,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:43:56,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 2 states have call successors, (188), 2 states have call predecessors, (188), 4 states have return successors, (189), 2 states have call predecessors, (189), 2 states have call successors, (189) Word has length 730 [2023-12-19 07:43:56,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:43:56,366 INFO L225 Difference]: With dead ends: 7024 [2023-12-19 07:43:56,366 INFO L226 Difference]: Without dead ends: 3624 [2023-12-19 07:43:56,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1462 GetRequests, 1452 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:43:56,390 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 304 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:43:56,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 1156 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:43:56,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3624 states. [2023-12-19 07:43:56,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3624 to 3536. [2023-12-19 07:43:56,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3536 states, 2687 states have (on average 1.6423520655005583) internal successors, (4413), 2702 states have internal predecessors, (4413), 819 states have call successors, (819), 29 states have call predecessors, (819), 29 states have return successors, (819), 804 states have call predecessors, (819), 819 states have call successors, (819) [2023-12-19 07:43:56,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 6051 transitions. [2023-12-19 07:43:56,583 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 6051 transitions. Word has length 730 [2023-12-19 07:43:56,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:43:56,584 INFO L495 AbstractCegarLoop]: Abstraction has 3536 states and 6051 transitions. [2023-12-19 07:43:56,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 2 states have call successors, (188), 2 states have call predecessors, (188), 4 states have return successors, (189), 2 states have call predecessors, (189), 2 states have call successors, (189) [2023-12-19 07:43:56,585 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 6051 transitions. [2023-12-19 07:43:56,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 731 [2023-12-19 07:43:56,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:43:56,594 INFO L195 NwaCegarLoop]: trace histogram [113, 113, 113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:43:56,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 07:43:56,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 07:43:56,804 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:43:56,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:43:56,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1559008716, now seen corresponding path program 1 times [2023-12-19 07:43:56,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:43:56,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496518354] [2023-12-19 07:43:56,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:43:56,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:43:56,854 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:43:56,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1382554212] [2023-12-19 07:43:56,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:43:56,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:43:56,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:43:56,856 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:43:56,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 07:43:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:43:57,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 1650 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:43:57,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:43:57,727 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 12066 proven. 207 refuted. 0 times theorem prover too weak. 13039 trivial. 0 not checked. [2023-12-19 07:43:57,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:43:58,190 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 129 proven. 207 refuted. 0 times theorem prover too weak. 24976 trivial. 0 not checked. [2023-12-19 07:43:58,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:43:58,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496518354] [2023-12-19 07:43:58,191 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:43:58,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382554212] [2023-12-19 07:43:58,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382554212] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:43:58,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:43:58,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:43:58,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127457073] [2023-12-19 07:43:58,192 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:43:58,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:43:58,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:43:58,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:43:58,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:43:58,195 INFO L87 Difference]: Start difference. First operand 3536 states and 6051 transitions. Second operand has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 2 states have call successors, (182), 2 states have call predecessors, (182), 4 states have return successors, (183), 2 states have call predecessors, (183), 2 states have call successors, (183) [2023-12-19 07:43:58,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:43:58,809 INFO L93 Difference]: Finished difference Result 7022 states and 11975 transitions. [2023-12-19 07:43:58,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:43:58,809 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 2 states have call successors, (182), 2 states have call predecessors, (182), 4 states have return successors, (183), 2 states have call predecessors, (183), 2 states have call successors, (183) Word has length 730 [2023-12-19 07:43:58,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:43:58,831 INFO L225 Difference]: With dead ends: 7022 [2023-12-19 07:43:58,831 INFO L226 Difference]: Without dead ends: 3618 [2023-12-19 07:43:58,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1462 GetRequests, 1452 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:43:58,843 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 529 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:43:58,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 1163 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:43:58,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3618 states. [2023-12-19 07:43:59,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3618 to 3556. [2023-12-19 07:43:59,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 2702 states have (on average 1.6328645447816432) internal successors, (4412), 2717 states have internal predecessors, (4412), 819 states have call successors, (819), 34 states have call predecessors, (819), 34 states have return successors, (819), 804 states have call predecessors, (819), 819 states have call successors, (819) [2023-12-19 07:43:59,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 6050 transitions. [2023-12-19 07:43:59,090 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 6050 transitions. Word has length 730 [2023-12-19 07:43:59,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:43:59,091 INFO L495 AbstractCegarLoop]: Abstraction has 3556 states and 6050 transitions. [2023-12-19 07:43:59,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 2 states have call successors, (182), 2 states have call predecessors, (182), 4 states have return successors, (183), 2 states have call predecessors, (183), 2 states have call successors, (183) [2023-12-19 07:43:59,092 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 6050 transitions. [2023-12-19 07:43:59,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 731 [2023-12-19 07:43:59,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:43:59,101 INFO L195 NwaCegarLoop]: trace histogram [113, 113, 113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:43:59,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 07:43:59,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:43:59,311 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:43:59,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:43:59,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1424995210, now seen corresponding path program 1 times [2023-12-19 07:43:59,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:43:59,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76636031] [2023-12-19 07:43:59,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:43:59,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:43:59,419 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:43:59,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [581861491] [2023-12-19 07:43:59,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:43:59,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:43:59,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:43:59,421 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:43:59,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 07:43:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:43:59,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 1649 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 07:43:59,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:43:59,827 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25312 trivial. 0 not checked. [2023-12-19 07:43:59,827 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:43:59,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:43:59,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76636031] [2023-12-19 07:43:59,827 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:43:59,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581861491] [2023-12-19 07:43:59,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581861491] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:43:59,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:43:59,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:43:59,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750343556] [2023-12-19 07:43:59,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:43:59,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:43:59,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:43:59,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:43:59,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:43:59,831 INFO L87 Difference]: Start difference. First operand 3556 states and 6050 transitions. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 1 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 1 states have call successors, (113) [2023-12-19 07:44:00,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:44:00,047 INFO L93 Difference]: Finished difference Result 7024 states and 11937 transitions. [2023-12-19 07:44:00,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:44:00,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 1 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 1 states have call successors, (113) Word has length 730 [2023-12-19 07:44:00,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:44:00,075 INFO L225 Difference]: With dead ends: 7024 [2023-12-19 07:44:00,076 INFO L226 Difference]: Without dead ends: 3572 [2023-12-19 07:44:00,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 727 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:44:00,085 INFO L413 NwaCegarLoop]: 691 mSDtfsCounter, 174 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 07:44:00,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 1806 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 07:44:00,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3572 states. [2023-12-19 07:44:00,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3572 to 3572. [2023-12-19 07:44:00,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3572 states, 2714 states have (on average 1.6241709653647753) internal successors, (4408), 2729 states have internal predecessors, (4408), 819 states have call successors, (819), 38 states have call predecessors, (819), 38 states have return successors, (819), 804 states have call predecessors, (819), 819 states have call successors, (819) [2023-12-19 07:44:00,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3572 states to 3572 states and 6046 transitions. [2023-12-19 07:44:00,251 INFO L78 Accepts]: Start accepts. Automaton has 3572 states and 6046 transitions. Word has length 730 [2023-12-19 07:44:00,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:44:00,251 INFO L495 AbstractCegarLoop]: Abstraction has 3572 states and 6046 transitions. [2023-12-19 07:44:00,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 1 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 1 states have call successors, (113) [2023-12-19 07:44:00,252 INFO L276 IsEmpty]: Start isEmpty. Operand 3572 states and 6046 transitions. [2023-12-19 07:44:00,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 731 [2023-12-19 07:44:00,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:44:00,259 INFO L195 NwaCegarLoop]: trace histogram [113, 113, 113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:44:00,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 07:44:00,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 07:44:00,467 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:44:00,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:44:00,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1487034824, now seen corresponding path program 1 times [2023-12-19 07:44:00,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:44:00,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589331877] [2023-12-19 07:44:00,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:00,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:44:00,516 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:44:00,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2053719498] [2023-12-19 07:44:00,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:00,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:44:00,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:44:00,518 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:44:00,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 07:44:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:44:00,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 1650 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 07:44:00,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:44:01,807 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 15996 proven. 306 refuted. 0 times theorem prover too weak. 9010 trivial. 0 not checked. [2023-12-19 07:44:01,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:44:02,482 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 213 proven. 123 refuted. 0 times theorem prover too weak. 24976 trivial. 0 not checked. [2023-12-19 07:44:02,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:44:02,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589331877] [2023-12-19 07:44:02,482 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:44:02,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053719498] [2023-12-19 07:44:02,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053719498] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:44:02,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:44:02,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2023-12-19 07:44:02,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438288042] [2023-12-19 07:44:02,483 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:44:02,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 07:44:02,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:44:02,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 07:44:02,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-12-19 07:44:02,486 INFO L87 Difference]: Start difference. First operand 3572 states and 6046 transitions. Second operand has 15 states, 15 states have (on average 17.666666666666668) internal successors, (265), 15 states have internal predecessors, (265), 4 states have call successors, (175), 3 states have call predecessors, (175), 6 states have return successors, (176), 4 states have call predecessors, (176), 4 states have call successors, (176) [2023-12-19 07:44:05,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:44:05,876 INFO L93 Difference]: Finished difference Result 18270 states and 30382 transitions. [2023-12-19 07:44:05,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-19 07:44:05,877 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 17.666666666666668) internal successors, (265), 15 states have internal predecessors, (265), 4 states have call successors, (175), 3 states have call predecessors, (175), 6 states have return successors, (176), 4 states have call predecessors, (176), 4 states have call successors, (176) Word has length 730 [2023-12-19 07:44:05,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:44:05,924 INFO L225 Difference]: With dead ends: 18270 [2023-12-19 07:44:05,924 INFO L226 Difference]: Without dead ends: 14834 [2023-12-19 07:44:05,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1498 GetRequests, 1449 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=726, Invalid=1824, Unknown=0, NotChecked=0, Total=2550 [2023-12-19 07:44:05,936 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 3712 mSDsluCounter, 2302 mSDsCounter, 0 mSdLazyCounter, 2177 mSolverCounterSat, 1872 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3761 SdHoareTripleChecker+Valid, 2812 SdHoareTripleChecker+Invalid, 4049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1872 IncrementalHoareTripleChecker+Valid, 2177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:44:05,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3761 Valid, 2812 Invalid, 4049 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1872 Valid, 2177 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 07:44:05,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14834 states. [2023-12-19 07:44:06,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14834 to 9608. [2023-12-19 07:44:06,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9608 states, 7499 states have (on average 1.6235498066408856) internal successors, (12175), 7546 states have internal predecessors, (12175), 1999 states have call successors, (1999), 109 states have call predecessors, (1999), 109 states have return successors, (1999), 1952 states have call predecessors, (1999), 1999 states have call successors, (1999) [2023-12-19 07:44:06,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9608 states to 9608 states and 16173 transitions. [2023-12-19 07:44:06,746 INFO L78 Accepts]: Start accepts. Automaton has 9608 states and 16173 transitions. Word has length 730 [2023-12-19 07:44:06,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:44:06,747 INFO L495 AbstractCegarLoop]: Abstraction has 9608 states and 16173 transitions. [2023-12-19 07:44:06,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 17.666666666666668) internal successors, (265), 15 states have internal predecessors, (265), 4 states have call successors, (175), 3 states have call predecessors, (175), 6 states have return successors, (176), 4 states have call predecessors, (176), 4 states have call successors, (176) [2023-12-19 07:44:06,748 INFO L276 IsEmpty]: Start isEmpty. Operand 9608 states and 16173 transitions. [2023-12-19 07:44:06,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2023-12-19 07:44:06,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:44:06,778 INFO L195 NwaCegarLoop]: trace histogram [113, 113, 113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:44:06,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 07:44:06,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 07:44:06,980 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:44:06,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:44:06,980 INFO L85 PathProgramCache]: Analyzing trace with hash -940620415, now seen corresponding path program 1 times [2023-12-19 07:44:06,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:44:06,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306984325] [2023-12-19 07:44:06,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:06,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:44:07,031 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:44:07,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [947349524] [2023-12-19 07:44:07,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:07,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:44:07,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:44:07,033 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:44:07,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 07:44:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:44:07,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 1649 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:44:07,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:44:08,123 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25312 trivial. 0 not checked. [2023-12-19 07:44:08,124 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:44:08,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:44:08,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306984325] [2023-12-19 07:44:08,124 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:44:08,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947349524] [2023-12-19 07:44:08,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947349524] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:44:08,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:44:08,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:44:08,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894228631] [2023-12-19 07:44:08,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:44:08,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:44:08,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:44:08,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:44:08,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:44:08,126 INFO L87 Difference]: Start difference. First operand 9608 states and 16173 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 1 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 1 states have call successors, (113) [2023-12-19 07:44:09,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:44:09,157 INFO L93 Difference]: Finished difference Result 28512 states and 48075 transitions. [2023-12-19 07:44:09,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:44:09,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 1 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 1 states have call successors, (113) Word has length 731 [2023-12-19 07:44:09,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:44:09,198 INFO L225 Difference]: With dead ends: 28512 [2023-12-19 07:44:09,198 INFO L226 Difference]: Without dead ends: 19060 [2023-12-19 07:44:09,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 729 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:44:09,215 INFO L413 NwaCegarLoop]: 725 mSDtfsCounter, 249 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:44:09,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 1295 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:44:09,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19060 states. [2023-12-19 07:44:10,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19060 to 19044. [2023-12-19 07:44:10,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19044 states, 14911 states have (on average 1.6219569445375897) internal successors, (24185), 15004 states have internal predecessors, (24185), 3923 states have call successors, (3923), 209 states have call predecessors, (3923), 209 states have return successors, (3923), 3830 states have call predecessors, (3923), 3923 states have call successors, (3923) [2023-12-19 07:44:10,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19044 states to 19044 states and 32031 transitions. [2023-12-19 07:44:10,419 INFO L78 Accepts]: Start accepts. Automaton has 19044 states and 32031 transitions. Word has length 731 [2023-12-19 07:44:10,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:44:10,420 INFO L495 AbstractCegarLoop]: Abstraction has 19044 states and 32031 transitions. [2023-12-19 07:44:10,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 1 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 1 states have call successors, (113) [2023-12-19 07:44:10,420 INFO L276 IsEmpty]: Start isEmpty. Operand 19044 states and 32031 transitions. [2023-12-19 07:44:10,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2023-12-19 07:44:10,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:44:10,441 INFO L195 NwaCegarLoop]: trace histogram [113, 113, 113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:44:10,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 07:44:10,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 07:44:10,653 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:44:10,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:44:10,654 INFO L85 PathProgramCache]: Analyzing trace with hash -131741855, now seen corresponding path program 1 times [2023-12-19 07:44:10,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:44:10,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686626028] [2023-12-19 07:44:10,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:10,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:44:10,697 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:44:10,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1222081585] [2023-12-19 07:44:10,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:10,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:44:10,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:44:10,698 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:44:10,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 07:44:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:44:11,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 1652 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:44:11,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:44:11,656 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25312 trivial. 0 not checked. [2023-12-19 07:44:11,657 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:44:11,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:44:11,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686626028] [2023-12-19 07:44:11,657 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:44:11,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222081585] [2023-12-19 07:44:11,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222081585] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:44:11,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:44:11,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:44:11,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399354712] [2023-12-19 07:44:11,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:44:11,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:44:11,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:44:11,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:44:11,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:44:11,660 INFO L87 Difference]: Start difference. First operand 19044 states and 32031 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 1 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 1 states have call successors, (113) [2023-12-19 07:44:13,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:44:13,999 INFO L93 Difference]: Finished difference Result 47398 states and 79804 transitions. [2023-12-19 07:44:14,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:44:14,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 1 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 1 states have call successors, (113) Word has length 732 [2023-12-19 07:44:14,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:44:14,089 INFO L225 Difference]: With dead ends: 47398 [2023-12-19 07:44:14,089 INFO L226 Difference]: Without dead ends: 37946 [2023-12-19 07:44:14,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 729 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:44:14,116 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 665 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:44:14,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 1590 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 07:44:14,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37946 states. [2023-12-19 07:44:16,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37946 to 37930. [2023-12-19 07:44:16,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37930 states, 29749 states have (on average 1.6232478402635382) internal successors, (48290), 29934 states have internal predecessors, (48290), 7771 states have call successors, (7771), 409 states have call predecessors, (7771), 409 states have return successors, (7771), 7586 states have call predecessors, (7771), 7771 states have call successors, (7771) [2023-12-19 07:44:16,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37930 states to 37930 states and 63832 transitions. [2023-12-19 07:44:16,749 INFO L78 Accepts]: Start accepts. Automaton has 37930 states and 63832 transitions. Word has length 732 [2023-12-19 07:44:16,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:44:16,750 INFO L495 AbstractCegarLoop]: Abstraction has 37930 states and 63832 transitions. [2023-12-19 07:44:16,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 1 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 1 states have call successors, (113) [2023-12-19 07:44:16,751 INFO L276 IsEmpty]: Start isEmpty. Operand 37930 states and 63832 transitions. [2023-12-19 07:44:16,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2023-12-19 07:44:16,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:44:16,934 INFO L195 NwaCegarLoop]: trace histogram [113, 113, 113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:44:16,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-19 07:44:17,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 07:44:17,135 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:44:17,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:44:17,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1193114339, now seen corresponding path program 1 times [2023-12-19 07:44:17,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:44:17,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371012339] [2023-12-19 07:44:17,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:17,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:44:17,197 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:44:17,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1421767968] [2023-12-19 07:44:17,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:17,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:44:17,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:44:17,213 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:44:17,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 07:44:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:44:17,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 1652 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 07:44:17,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:44:19,034 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 10318 proven. 93 refuted. 0 times theorem prover too weak. 14901 trivial. 0 not checked. [2023-12-19 07:44:19,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:44:19,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:44:19,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371012339] [2023-12-19 07:44:19,785 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:44:19,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421767968] [2023-12-19 07:44:19,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421767968] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 07:44:19,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 07:44:19,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-19 07:44:19,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633457632] [2023-12-19 07:44:19,786 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 07:44:19,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 07:44:19,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:44:19,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 07:44:19,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2023-12-19 07:44:19,787 INFO L87 Difference]: Start difference. First operand 37930 states and 63832 transitions. Second operand has 11 states, 11 states have (on average 16.0) internal successors, (176), 10 states have internal predecessors, (176), 2 states have call successors, (113), 2 states have call predecessors, (113), 3 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) [2023-12-19 07:44:46,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:44:46,064 INFO L93 Difference]: Finished difference Result 279670 states and 469830 transitions. [2023-12-19 07:44:46,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-19 07:44:46,065 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 16.0) internal successors, (176), 10 states have internal predecessors, (176), 2 states have call successors, (113), 2 states have call predecessors, (113), 3 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) Word has length 732 [2023-12-19 07:44:46,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:44:46,934 INFO L225 Difference]: With dead ends: 279670 [2023-12-19 07:44:46,935 INFO L226 Difference]: Without dead ends: 241896 [2023-12-19 07:44:47,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 856 GetRequests, 818 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=435, Invalid=1125, Unknown=0, NotChecked=0, Total=1560 [2023-12-19 07:44:47,051 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 3442 mSDsluCounter, 4214 mSDsCounter, 0 mSdLazyCounter, 3663 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3604 SdHoareTripleChecker+Valid, 4928 SdHoareTripleChecker+Invalid, 4136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 3663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-12-19 07:44:47,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3604 Valid, 4928 Invalid, 4136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [473 Valid, 3663 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-12-19 07:44:47,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241896 states. [2023-12-19 07:45:01,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241896 to 155782. [2023-12-19 07:45:01,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155782 states, 126105 states have (on average 1.6455969231989216) internal successors, (207518), 126858 states have internal predecessors, (207518), 28283 states have call successors, (28283), 1393 states have call predecessors, (28283), 1393 states have return successors, (28283), 27530 states have call predecessors, (28283), 28283 states have call successors, (28283) [2023-12-19 07:45:02,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155782 states to 155782 states and 264084 transitions. [2023-12-19 07:45:02,217 INFO L78 Accepts]: Start accepts. Automaton has 155782 states and 264084 transitions. Word has length 732 [2023-12-19 07:45:02,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:02,218 INFO L495 AbstractCegarLoop]: Abstraction has 155782 states and 264084 transitions. [2023-12-19 07:45:02,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.0) internal successors, (176), 10 states have internal predecessors, (176), 2 states have call successors, (113), 2 states have call predecessors, (113), 3 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) [2023-12-19 07:45:02,218 INFO L276 IsEmpty]: Start isEmpty. Operand 155782 states and 264084 transitions. [2023-12-19 07:45:02,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2023-12-19 07:45:02,468 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:02,468 INFO L195 NwaCegarLoop]: trace histogram [113, 113, 113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:45:02,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-19 07:45:02,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:02,676 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:02,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:02,676 INFO L85 PathProgramCache]: Analyzing trace with hash 2147054497, now seen corresponding path program 1 times [2023-12-19 07:45:02,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:02,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795614674] [2023-12-19 07:45:02,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:02,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:02,728 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:02,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644996701] [2023-12-19 07:45:02,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:02,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:02,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:02,729 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:45:02,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 07:45:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:03,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 1650 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 07:45:03,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:04,689 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 16304 proven. 0 refuted. 0 times theorem prover too weak. 9008 trivial. 0 not checked. [2023-12-19 07:45:04,690 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:45:04,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:45:04,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795614674] [2023-12-19 07:45:04,690 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:45:04,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644996701] [2023-12-19 07:45:04,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644996701] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:45:04,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:45:04,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:45:04,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136417215] [2023-12-19 07:45:04,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:45:04,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:45:04,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:04,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:45:04,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:45:04,692 INFO L87 Difference]: Start difference. First operand 155782 states and 264084 transitions. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 4 states have internal predecessors, (176), 3 states have call successors, (113), 3 states have call predecessors, (113), 3 states have return successors, (113), 3 states have call predecessors, (113), 3 states have call successors, (113) [2023-12-19 07:45:26,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:26,386 INFO L93 Difference]: Finished difference Result 459738 states and 779136 transitions. [2023-12-19 07:45:26,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:45:26,386 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 4 states have internal predecessors, (176), 3 states have call successors, (113), 3 states have call predecessors, (113), 3 states have return successors, (113), 3 states have call predecessors, (113), 3 states have call successors, (113) Word has length 732 [2023-12-19 07:45:26,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:27,383 INFO L225 Difference]: With dead ends: 459738 [2023-12-19 07:45:27,383 INFO L226 Difference]: Without dead ends: 304112 [2023-12-19 07:45:27,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:45:27,687 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 953 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 07:45:27,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [953 Valid, 1291 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 07:45:27,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304112 states. [2023-12-19 07:45:51,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304112 to 304110. [2023-12-19 07:45:52,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304110 states, 244841 states have (on average 1.632614635620668) internal successors, (399731), 246346 states have internal predecessors, (399731), 56491 states have call successors, (56491), 2777 states have call predecessors, (56491), 2777 states have return successors, (56491), 54986 states have call predecessors, (56491), 56491 states have call successors, (56491) [2023-12-19 07:45:53,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304110 states to 304110 states and 512713 transitions. [2023-12-19 07:45:54,012 INFO L78 Accepts]: Start accepts. Automaton has 304110 states and 512713 transitions. Word has length 732 [2023-12-19 07:45:54,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:54,013 INFO L495 AbstractCegarLoop]: Abstraction has 304110 states and 512713 transitions. [2023-12-19 07:45:54,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 4 states have internal predecessors, (176), 3 states have call successors, (113), 3 states have call predecessors, (113), 3 states have return successors, (113), 3 states have call predecessors, (113), 3 states have call successors, (113) [2023-12-19 07:45:54,014 INFO L276 IsEmpty]: Start isEmpty. Operand 304110 states and 512713 transitions. [2023-12-19 07:45:54,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2023-12-19 07:45:54,184 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:54,184 INFO L195 NwaCegarLoop]: trace histogram [113, 113, 113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:45:54,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 07:45:54,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 07:45:54,397 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:54,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:54,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1224789727, now seen corresponding path program 1 times [2023-12-19 07:45:54,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:54,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924945320] [2023-12-19 07:45:54,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:54,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:54,439 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:54,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [622565806] [2023-12-19 07:45:54,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:54,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:54,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:54,441 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:45:54,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 07:45:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:54,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 1652 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-19 07:45:54,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:57,915 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 11918 proven. 69 refuted. 0 times theorem prover too weak. 13325 trivial. 0 not checked. [2023-12-19 07:45:57,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:46:18,449 INFO L134 CoverageAnalysis]: Checked inductivity of 25312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25312 trivial. 0 not checked. [2023-12-19 07:46:18,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:46:18,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924945320] [2023-12-19 07:46:18,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:46:18,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622565806] [2023-12-19 07:46:18,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622565806] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 07:46:18,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 07:46:18,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [20] total 32 [2023-12-19 07:46:18,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366677557] [2023-12-19 07:46:18,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:46:18,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 07:46:18,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:46:18,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 07:46:18,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2023-12-19 07:46:18,452 INFO L87 Difference]: Start difference. First operand 304110 states and 512713 transitions. Second operand has 14 states, 14 states have (on average 12.142857142857142) internal successors, (170), 14 states have internal predecessors, (170), 1 states have call successors, (113), 1 states have call predecessors, (113), 1 states have return successors, (113), 1 states have call predecessors, (113), 1 states have call successors, (113) [2023-12-19 07:46:31,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1]