/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-36.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 02:58:29,877 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 02:58:29,924 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 02:58:29,930 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 02:58:29,931 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 02:58:29,959 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 02:58:29,960 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 02:58:29,961 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 02:58:29,961 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 02:58:29,964 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 02:58:29,964 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 02:58:29,965 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 02:58:29,965 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 02:58:29,966 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 02:58:29,966 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 02:58:29,966 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 02:58:29,967 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 02:58:29,967 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 02:58:29,967 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 02:58:29,967 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 02:58:29,967 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 02:58:29,969 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 02:58:29,969 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 02:58:29,969 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 02:58:29,969 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 02:58:29,969 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 02:58:29,969 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 02:58:29,969 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 02:58:29,970 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 02:58:29,970 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 02:58:29,971 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 02:58:29,971 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 02:58:29,971 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:58:29,971 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 02:58:29,971 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 02:58:29,971 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 02:58:29,971 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 02:58:29,972 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 02:58:29,972 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 02:58:29,972 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 02:58:29,972 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 02:58:29,972 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 02:58:29,972 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 02:58:29,972 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 02:58:30,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 02:58:30,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 02:58:30,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 02:58:30,202 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 02:58:30,202 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 02:58:30,203 INFO L431 ainManager$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-36.i [2023-12-16 02:58:31,288 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 02:58:31,505 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 02:58:31,505 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-36.i [2023-12-16 02:58:31,519 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfa0db554/e6150110ce9146429258c8563af273a3/FLAG024e2ea39 [2023-12-16 02:58:31,827 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfa0db554/e6150110ce9146429258c8563af273a3 [2023-12-16 02:58:31,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 02:58:31,830 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 02:58:31,831 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 02:58:31,831 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 02:58:31,835 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 02:58:31,835 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:58:31" (1/1) ... [2023-12-16 02:58:31,836 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@451ec1c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:31, skipping insertion in model container [2023-12-16 02:58:31,836 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:58:31" (1/1) ... [2023-12-16 02:58:31,883 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 02:58:32,011 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-36.i[916,929] [2023-12-16 02:58:32,130 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:58:32,142 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 02:58:32,149 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-36.i[916,929] [2023-12-16 02:58:32,211 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:58:32,226 INFO L206 MainTranslator]: Completed translation [2023-12-16 02:58:32,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:32 WrapperNode [2023-12-16 02:58:32,226 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 02:58:32,227 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 02:58:32,227 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 02:58:32,227 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 02:58:32,236 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:32" (1/1) ... [2023-12-16 02:58:32,254 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:32" (1/1) ... [2023-12-16 02:58:32,323 INFO L138 Inliner]: procedures = 26, calls = 106, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 739 [2023-12-16 02:58:32,323 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 02:58:32,340 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 02:58:32,340 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 02:58:32,340 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 02:58:32,354 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:32" (1/1) ... [2023-12-16 02:58:32,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:32" (1/1) ... [2023-12-16 02:58:32,361 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:32" (1/1) ... [2023-12-16 02:58:32,396 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 02:58:32,397 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:32" (1/1) ... [2023-12-16 02:58:32,397 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:32" (1/1) ... [2023-12-16 02:58:32,416 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:32" (1/1) ... [2023-12-16 02:58:32,421 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:32" (1/1) ... [2023-12-16 02:58:32,425 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:32" (1/1) ... [2023-12-16 02:58:32,430 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:32" (1/1) ... [2023-12-16 02:58:32,437 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 02:58:32,438 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 02:58:32,438 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 02:58:32,438 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 02:58:32,439 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:32" (1/1) ... [2023-12-16 02:58:32,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:58:32,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:32,477 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 02:58:32,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 02:58:32,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 02:58:32,506 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 02:58:32,507 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 02:58:32,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 02:58:32,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 02:58:32,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 02:58:32,624 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 02:58:32,626 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 02:58:33,304 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 02:58:33,345 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 02:58:33,345 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 02:58:33,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:58:33 BoogieIcfgContainer [2023-12-16 02:58:33,346 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 02:58:33,347 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 02:58:33,347 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 02:58:33,349 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 02:58:33,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:58:31" (1/3) ... [2023-12-16 02:58:33,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617b93d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:58:33, skipping insertion in model container [2023-12-16 02:58:33,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:58:32" (2/3) ... [2023-12-16 02:58:33,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617b93d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:58:33, skipping insertion in model container [2023-12-16 02:58:33,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:58:33" (3/3) ... [2023-12-16 02:58:33,352 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-36.i [2023-12-16 02:58:33,363 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 02:58:33,363 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 02:58:33,405 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 02:58:33,410 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;@41f96f62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 02:58:33,410 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 02:58:33,415 INFO L276 IsEmpty]: Start isEmpty. Operand has 286 states, 190 states have (on average 1.605263157894737) internal successors, (305), 191 states have internal predecessors, (305), 93 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2023-12-16 02:58:33,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2023-12-16 02:58:33,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:33,437 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:33,438 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:33,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:33,442 INFO L85 PathProgramCache]: Analyzing trace with hash -2139191250, now seen corresponding path program 1 times [2023-12-16 02:58:33,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:33,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332366507] [2023-12-16 02:58:33,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:33,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:33,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:33,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332366507] [2023-12-16 02:58:33,732 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 02:58:33,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663908328] [2023-12-16 02:58:33,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:33,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:33,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:33,764 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:58:33,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 02:58:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:34,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 02:58:34,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:34,232 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 16928 trivial. 0 not checked. [2023-12-16 02:58:34,232 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:58:34,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663908328] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:58:34,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:58:34,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:58:34,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956789390] [2023-12-16 02:58:34,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:58:34,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 02:58:34,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:34,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 02:58:34,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:58:34,270 INFO L87 Difference]: Start difference. First operand has 286 states, 190 states have (on average 1.605263157894737) internal successors, (305), 191 states have internal predecessors, (305), 93 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) Second operand has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 2 states have call successors, (93), 2 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 2 states have call successors, (93) [2023-12-16 02:58:34,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:34,373 INFO L93 Difference]: Finished difference Result 569 states and 1073 transitions. [2023-12-16 02:58:34,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 02:58:34,377 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 2 states have call successors, (93), 2 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 2 states have call successors, (93) Word has length 605 [2023-12-16 02:58:34,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:34,389 INFO L225 Difference]: With dead ends: 569 [2023-12-16 02:58:34,389 INFO L226 Difference]: Without dead ends: 284 [2023-12-16 02:58:34,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 604 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:58:34,400 INFO L413 NwaCegarLoop]: 483 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, 483 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:34,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 483 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:58:34,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-12-16 02:58:34,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2023-12-16 02:58:34,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 189 states have (on average 1.5873015873015872) internal successors, (300), 189 states have internal predecessors, (300), 93 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2023-12-16 02:58:34,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 486 transitions. [2023-12-16 02:58:34,475 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 486 transitions. Word has length 605 [2023-12-16 02:58:34,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:34,475 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 486 transitions. [2023-12-16 02:58:34,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 2 states have call successors, (93), 2 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 2 states have call successors, (93) [2023-12-16 02:58:34,475 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 486 transitions. [2023-12-16 02:58:34,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2023-12-16 02:58:34,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:34,490 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:34,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 02:58:34,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-16 02:58:34,707 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:34,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:34,708 INFO L85 PathProgramCache]: Analyzing trace with hash 2003427292, now seen corresponding path program 1 times [2023-12-16 02:58:34,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:34,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830212370] [2023-12-16 02:58:34,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:34,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:34,812 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:34,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1906936936] [2023-12-16 02:58:34,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:34,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:34,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:34,829 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:58:34,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 02:58:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:35,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:58:35,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:35,214 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17112 trivial. 0 not checked. [2023-12-16 02:58:35,214 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:58:35,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:35,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830212370] [2023-12-16 02:58:35,214 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:35,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906936936] [2023-12-16 02:58:35,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906936936] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:58:35,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:58:35,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:58:35,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372160309] [2023-12-16 02:58:35,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:58:35,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:58:35,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:35,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:58:35,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:58:35,220 INFO L87 Difference]: Start difference. First operand 284 states and 486 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-16 02:58:35,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:35,302 INFO L93 Difference]: Finished difference Result 740 states and 1274 transitions. [2023-12-16 02:58:35,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:58:35,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) Word has length 605 [2023-12-16 02:58:35,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:35,309 INFO L225 Difference]: With dead ends: 740 [2023-12-16 02:58:35,309 INFO L226 Difference]: Without dead ends: 457 [2023-12-16 02:58:35,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 603 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:58:35,312 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 281 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:35,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 946 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:58:35,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2023-12-16 02:58:35,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 454. [2023-12-16 02:58:35,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 334 states have (on average 1.652694610778443) internal successors, (552), 335 states have internal predecessors, (552), 117 states have call successors, (117), 2 states have call predecessors, (117), 2 states have return successors, (117), 116 states have call predecessors, (117), 117 states have call successors, (117) [2023-12-16 02:58:35,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 786 transitions. [2023-12-16 02:58:35,363 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 786 transitions. Word has length 605 [2023-12-16 02:58:35,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:35,365 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 786 transitions. [2023-12-16 02:58:35,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-16 02:58:35,365 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 786 transitions. [2023-12-16 02:58:35,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2023-12-16 02:58:35,371 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:35,371 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:35,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:35,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-16 02:58:35,579 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:35,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:35,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1586030686, now seen corresponding path program 1 times [2023-12-16 02:58:35,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:35,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303697546] [2023-12-16 02:58:35,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:35,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:35,671 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:35,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2013497088] [2023-12-16 02:58:35,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:35,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:35,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:35,685 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:58:35,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 02:58:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:36,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 1400 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:58:36,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:36,102 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17112 trivial. 0 not checked. [2023-12-16 02:58:36,102 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:58:36,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:36,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303697546] [2023-12-16 02:58:36,116 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:36,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013497088] [2023-12-16 02:58:36,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013497088] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:58:36,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:58:36,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:58:36,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030575629] [2023-12-16 02:58:36,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:58:36,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:58:36,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:36,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:58:36,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:58:36,119 INFO L87 Difference]: Start difference. First operand 454 states and 786 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-16 02:58:36,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:36,188 INFO L93 Difference]: Finished difference Result 1257 states and 2183 transitions. [2023-12-16 02:58:36,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:58:36,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) Word has length 605 [2023-12-16 02:58:36,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:36,198 INFO L225 Difference]: With dead ends: 1257 [2023-12-16 02:58:36,198 INFO L226 Difference]: Without dead ends: 804 [2023-12-16 02:58:36,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 603 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:58:36,200 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 321 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:36,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 951 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:58:36,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2023-12-16 02:58:36,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 801. [2023-12-16 02:58:36,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 617 states have (on average 1.6758508914100487) internal successors, (1034), 620 states have internal predecessors, (1034), 179 states have call successors, (179), 4 states have call predecessors, (179), 4 states have return successors, (179), 176 states have call predecessors, (179), 179 states have call successors, (179) [2023-12-16 02:58:36,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1392 transitions. [2023-12-16 02:58:36,258 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1392 transitions. Word has length 605 [2023-12-16 02:58:36,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:36,259 INFO L495 AbstractCegarLoop]: Abstraction has 801 states and 1392 transitions. [2023-12-16 02:58:36,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-16 02:58:36,259 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1392 transitions. [2023-12-16 02:58:36,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2023-12-16 02:58:36,264 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:36,264 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:36,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:36,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:36,472 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:36,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:36,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1613096288, now seen corresponding path program 1 times [2023-12-16 02:58:36,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:36,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667153808] [2023-12-16 02:58:36,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:36,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:36,548 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:36,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [689924681] [2023-12-16 02:58:36,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:36,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:36,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:36,549 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:58:36,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 02:58:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:36,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 1399 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:58:36,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:36,867 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17112 trivial. 0 not checked. [2023-12-16 02:58:36,867 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:58:36,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:36,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667153808] [2023-12-16 02:58:36,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:36,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689924681] [2023-12-16 02:58:36,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689924681] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:58:36,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:58:36,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:58:36,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786153609] [2023-12-16 02:58:36,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:58:36,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:58:36,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:36,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:58:36,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:58:36,871 INFO L87 Difference]: Start difference. First operand 801 states and 1392 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-16 02:58:36,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:36,941 INFO L93 Difference]: Finished difference Result 2142 states and 3703 transitions. [2023-12-16 02:58:36,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:58:36,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) Word has length 605 [2023-12-16 02:58:36,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:36,962 INFO L225 Difference]: With dead ends: 2142 [2023-12-16 02:58:36,963 INFO L226 Difference]: Without dead ends: 1342 [2023-12-16 02:58:36,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 603 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:58:36,965 INFO L413 NwaCegarLoop]: 583 mSDtfsCounter, 257 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:36,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 1051 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:58:36,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2023-12-16 02:58:37,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1339. [2023-12-16 02:58:37,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 1023 states have (on average 1.6500488758553276) internal successors, (1688), 1030 states have internal predecessors, (1688), 307 states have call successors, (307), 8 states have call predecessors, (307), 8 states have return successors, (307), 300 states have call predecessors, (307), 307 states have call successors, (307) [2023-12-16 02:58:37,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 2302 transitions. [2023-12-16 02:58:37,048 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 2302 transitions. Word has length 605 [2023-12-16 02:58:37,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:37,049 INFO L495 AbstractCegarLoop]: Abstraction has 1339 states and 2302 transitions. [2023-12-16 02:58:37,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-16 02:58:37,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 2302 transitions. [2023-12-16 02:58:37,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2023-12-16 02:58:37,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:37,054 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:37,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:37,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:37,275 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:37,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:37,276 INFO L85 PathProgramCache]: Analyzing trace with hash 2056996962, now seen corresponding path program 1 times [2023-12-16 02:58:37,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:37,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816303900] [2023-12-16 02:58:37,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:37,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:37,313 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:37,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637889346] [2023-12-16 02:58:37,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:37,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:37,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:37,315 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:58:37,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 02:58:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:37,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:58:37,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:37,657 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17112 trivial. 0 not checked. [2023-12-16 02:58:37,657 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:58:37,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:37,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816303900] [2023-12-16 02:58:37,657 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:37,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637889346] [2023-12-16 02:58:37,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637889346] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:58:37,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:58:37,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:58:37,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605504653] [2023-12-16 02:58:37,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:58:37,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:58:37,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:37,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:58:37,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:58:37,665 INFO L87 Difference]: Start difference. First operand 1339 states and 2302 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-16 02:58:37,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:37,735 INFO L93 Difference]: Finished difference Result 2684 states and 4608 transitions. [2023-12-16 02:58:37,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:58:37,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) Word has length 605 [2023-12-16 02:58:37,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:37,742 INFO L225 Difference]: With dead ends: 2684 [2023-12-16 02:58:37,742 INFO L226 Difference]: Without dead ends: 1346 [2023-12-16 02:58:37,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 603 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:58:37,746 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 219 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:37,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 1065 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:58:37,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2023-12-16 02:58:37,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1039. [2023-12-16 02:58:37,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 854 states have (on average 1.6943793911007026) internal successors, (1447), 857 states have internal predecessors, (1447), 179 states have call successors, (179), 5 states have call predecessors, (179), 5 states have return successors, (179), 176 states have call predecessors, (179), 179 states have call successors, (179) [2023-12-16 02:58:37,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1805 transitions. [2023-12-16 02:58:37,785 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1805 transitions. Word has length 605 [2023-12-16 02:58:37,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:37,798 INFO L495 AbstractCegarLoop]: Abstraction has 1039 states and 1805 transitions. [2023-12-16 02:58:37,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-16 02:58:37,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1805 transitions. [2023-12-16 02:58:37,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2023-12-16 02:58:37,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:37,803 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:37,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:38,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:38,011 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:38,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:38,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1035928608, now seen corresponding path program 1 times [2023-12-16 02:58:38,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:38,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491749016] [2023-12-16 02:58:38,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:38,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:38,061 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:38,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [373350359] [2023-12-16 02:58:38,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:38,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:38,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:38,077 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:58:38,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 02:58:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:38,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 1397 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:58:38,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:38,412 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17112 trivial. 0 not checked. [2023-12-16 02:58:38,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:58:38,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:38,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491749016] [2023-12-16 02:58:38,413 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:38,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373350359] [2023-12-16 02:58:38,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373350359] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:58:38,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:58:38,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:58:38,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957441860] [2023-12-16 02:58:38,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:58:38,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:58:38,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:38,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:58:38,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:58:38,414 INFO L87 Difference]: Start difference. First operand 1039 states and 1805 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-16 02:58:38,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:38,481 INFO L93 Difference]: Finished difference Result 3107 states and 5397 transitions. [2023-12-16 02:58:38,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:58:38,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) Word has length 605 [2023-12-16 02:58:38,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:38,489 INFO L225 Difference]: With dead ends: 3107 [2023-12-16 02:58:38,489 INFO L226 Difference]: Without dead ends: 2069 [2023-12-16 02:58:38,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 603 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:58:38,492 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 467 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:38,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 953 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:58:38,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2023-12-16 02:58:38,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 2067. [2023-12-16 02:58:38,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2067 states, 1698 states have (on average 1.674911660777385) internal successors, (2844), 1704 states have internal predecessors, (2844), 358 states have call successors, (358), 10 states have call predecessors, (358), 10 states have return successors, (358), 352 states have call predecessors, (358), 358 states have call successors, (358) [2023-12-16 02:58:38,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 3560 transitions. [2023-12-16 02:58:38,560 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 3560 transitions. Word has length 605 [2023-12-16 02:58:38,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:38,561 INFO L495 AbstractCegarLoop]: Abstraction has 2067 states and 3560 transitions. [2023-12-16 02:58:38,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-16 02:58:38,561 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 3560 transitions. [2023-12-16 02:58:38,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2023-12-16 02:58:38,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:38,566 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:38,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:38,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:38,774 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:38,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:38,774 INFO L85 PathProgramCache]: Analyzing trace with hash -284768286, now seen corresponding path program 1 times [2023-12-16 02:58:38,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:38,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264477432] [2023-12-16 02:58:38,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:38,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:38,835 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:38,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1561521342] [2023-12-16 02:58:38,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:38,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:38,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:38,836 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:58:38,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 02:58:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:39,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 1400 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 02:58:39,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:39,458 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 8376 proven. 162 refuted. 0 times theorem prover too weak. 8574 trivial. 0 not checked. [2023-12-16 02:58:39,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:58:39,730 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 114 proven. 162 refuted. 0 times theorem prover too weak. 16836 trivial. 0 not checked. [2023-12-16 02:58:39,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:39,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264477432] [2023-12-16 02:58:39,730 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:39,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561521342] [2023-12-16 02:58:39,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561521342] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:58:39,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:58:39,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 02:58:39,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004865939] [2023-12-16 02:58:39,731 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:58:39,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 02:58:39,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:39,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 02:58:39,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:58:39,733 INFO L87 Difference]: Start difference. First operand 2067 states and 3560 transitions. Second operand has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 2 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) [2023-12-16 02:58:40,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:40,350 INFO L93 Difference]: Finished difference Result 3304 states and 5654 transitions. [2023-12-16 02:58:40,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 02:58:40,351 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 2 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) Word has length 605 [2023-12-16 02:58:40,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:40,356 INFO L225 Difference]: With dead ends: 3304 [2023-12-16 02:58:40,356 INFO L226 Difference]: Without dead ends: 1238 [2023-12-16 02:58:40,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1212 GetRequests, 1202 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 02:58:40,361 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 553 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:40,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 1084 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 02:58:40,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2023-12-16 02:58:40,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1221. [2023-12-16 02:58:40,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 938 states have (on average 1.6183368869936035) internal successors, (1518), 941 states have internal predecessors, (1518), 272 states have call successors, (272), 10 states have call predecessors, (272), 10 states have return successors, (272), 269 states have call predecessors, (272), 272 states have call successors, (272) [2023-12-16 02:58:40,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 2062 transitions. [2023-12-16 02:58:40,426 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 2062 transitions. Word has length 605 [2023-12-16 02:58:40,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:40,426 INFO L495 AbstractCegarLoop]: Abstraction has 1221 states and 2062 transitions. [2023-12-16 02:58:40,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 2 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) [2023-12-16 02:58:40,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 2062 transitions. [2023-12-16 02:58:40,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2023-12-16 02:58:40,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:40,431 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:40,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-16 02:58:40,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:40,639 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:40,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:40,639 INFO L85 PathProgramCache]: Analyzing trace with hash -552073634, now seen corresponding path program 1 times [2023-12-16 02:58:40,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:40,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214863807] [2023-12-16 02:58:40,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:40,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:40,676 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:40,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [506385154] [2023-12-16 02:58:40,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:40,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:40,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:40,677 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:58:40,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 02:58:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:40,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 02:58:40,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:41,314 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 8576 proven. 150 refuted. 0 times theorem prover too weak. 8386 trivial. 0 not checked. [2023-12-16 02:58:41,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:58:41,650 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 126 proven. 150 refuted. 0 times theorem prover too weak. 16836 trivial. 0 not checked. [2023-12-16 02:58:41,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:41,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214863807] [2023-12-16 02:58:41,650 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:41,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506385154] [2023-12-16 02:58:41,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506385154] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:58:41,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:58:41,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 02:58:41,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358882348] [2023-12-16 02:58:41,651 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:58:41,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 02:58:41,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:41,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 02:58:41,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:58:41,653 INFO L87 Difference]: Start difference. First operand 1221 states and 2062 transitions. Second operand has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 2 states have call successors, (143), 2 states have call predecessors, (143), 4 states have return successors, (144), 2 states have call predecessors, (144), 2 states have call successors, (144) [2023-12-16 02:58:42,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:42,029 INFO L93 Difference]: Finished difference Result 2163 states and 3633 transitions. [2023-12-16 02:58:42,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 02:58:42,030 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 2 states have call successors, (143), 2 states have call predecessors, (143), 4 states have return successors, (144), 2 states have call predecessors, (144), 2 states have call successors, (144) Word has length 605 [2023-12-16 02:58:42,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:42,034 INFO L225 Difference]: With dead ends: 2163 [2023-12-16 02:58:42,034 INFO L226 Difference]: Without dead ends: 1011 [2023-12-16 02:58:42,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1212 GetRequests, 1202 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 02:58:42,036 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 276 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:42,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 944 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 02:58:42,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2023-12-16 02:58:42,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 995. [2023-12-16 02:58:42,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 710 states have (on average 1.5661971830985915) internal successors, (1112), 713 states have internal predecessors, (1112), 272 states have call successors, (272), 12 states have call predecessors, (272), 12 states have return successors, (272), 269 states have call predecessors, (272), 272 states have call successors, (272) [2023-12-16 02:58:42,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1656 transitions. [2023-12-16 02:58:42,083 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1656 transitions. Word has length 605 [2023-12-16 02:58:42,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:42,083 INFO L495 AbstractCegarLoop]: Abstraction has 995 states and 1656 transitions. [2023-12-16 02:58:42,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 2 states have call successors, (143), 2 states have call predecessors, (143), 4 states have return successors, (144), 2 states have call predecessors, (144), 2 states have call successors, (144) [2023-12-16 02:58:42,084 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1656 transitions. [2023-12-16 02:58:42,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2023-12-16 02:58:42,087 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:42,087 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:42,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:42,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-16 02:58:42,295 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:42,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:42,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1930290853, now seen corresponding path program 1 times [2023-12-16 02:58:42,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:42,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615081399] [2023-12-16 02:58:42,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:42,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:42,349 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:42,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1678501217] [2023-12-16 02:58:42,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:42,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:42,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:42,351 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:58:42,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 02:58:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:42,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 02:58:42,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:42,855 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17112 trivial. 0 not checked. [2023-12-16 02:58:42,855 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:58:42,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:42,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615081399] [2023-12-16 02:58:42,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:42,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678501217] [2023-12-16 02:58:42,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678501217] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:58:42,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:58:42,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 02:58:42,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677746970] [2023-12-16 02:58:42,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:58:42,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:58:42,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:42,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:58:42,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:58:42,858 INFO L87 Difference]: Start difference. First operand 995 states and 1656 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-16 02:58:43,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:43,065 INFO L93 Difference]: Finished difference Result 2935 states and 4950 transitions. [2023-12-16 02:58:43,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:58:43,066 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) Word has length 606 [2023-12-16 02:58:43,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:43,072 INFO L225 Difference]: With dead ends: 2935 [2023-12-16 02:58:43,073 INFO L226 Difference]: Without dead ends: 1719 [2023-12-16 02:58:43,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 603 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:58:43,076 INFO L413 NwaCegarLoop]: 757 mSDtfsCounter, 528 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:43,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 1855 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 02:58:43,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2023-12-16 02:58:43,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1301. [2023-12-16 02:58:43,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1301 states, 1016 states have (on average 1.6299212598425197) internal successors, (1656), 1019 states have internal predecessors, (1656), 272 states have call successors, (272), 12 states have call predecessors, (272), 12 states have return successors, (272), 269 states have call predecessors, (272), 272 states have call successors, (272) [2023-12-16 02:58:43,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 2200 transitions. [2023-12-16 02:58:43,144 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 2200 transitions. Word has length 606 [2023-12-16 02:58:43,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:43,145 INFO L495 AbstractCegarLoop]: Abstraction has 1301 states and 2200 transitions. [2023-12-16 02:58:43,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-16 02:58:43,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 2200 transitions. [2023-12-16 02:58:43,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2023-12-16 02:58:43,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:43,149 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:43,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:43,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:43,357 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:43,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:43,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1306838365, now seen corresponding path program 1 times [2023-12-16 02:58:43,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:43,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835596292] [2023-12-16 02:58:43,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:43,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:43,398 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:43,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1254343705] [2023-12-16 02:58:43,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:43,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:43,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:43,425 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:58:43,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 02:58:43,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:43,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 1400 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 02:58:43,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:43,989 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 5108 proven. 48 refuted. 0 times theorem prover too weak. 11956 trivial. 0 not checked. [2023-12-16 02:58:43,989 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:58:44,262 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 228 proven. 48 refuted. 0 times theorem prover too weak. 16836 trivial. 0 not checked. [2023-12-16 02:58:44,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:44,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835596292] [2023-12-16 02:58:44,263 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:44,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254343705] [2023-12-16 02:58:44,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254343705] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:58:44,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:58:44,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 02:58:44,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086511044] [2023-12-16 02:58:44,264 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:58:44,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 02:58:44,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:44,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 02:58:44,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:58:44,266 INFO L87 Difference]: Start difference. First operand 1301 states and 2200 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 2 states have call successors, (109), 2 states have call predecessors, (109), 4 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2023-12-16 02:58:44,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:44,651 INFO L93 Difference]: Finished difference Result 2561 states and 4321 transitions. [2023-12-16 02:58:44,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 02:58:44,652 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 2 states have call successors, (109), 2 states have call predecessors, (109), 4 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) Word has length 606 [2023-12-16 02:58:44,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:44,656 INFO L225 Difference]: With dead ends: 2561 [2023-12-16 02:58:44,656 INFO L226 Difference]: Without dead ends: 1329 [2023-12-16 02:58:44,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1214 GetRequests, 1204 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 02:58:44,659 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 312 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:44,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 920 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 02:58:44,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2023-12-16 02:58:44,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1309. [2023-12-16 02:58:44,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 1022 states have (on average 1.6027397260273972) internal successors, (1638), 1025 states have internal predecessors, (1638), 272 states have call successors, (272), 14 states have call predecessors, (272), 14 states have return successors, (272), 269 states have call predecessors, (272), 272 states have call successors, (272) [2023-12-16 02:58:44,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 2182 transitions. [2023-12-16 02:58:44,724 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 2182 transitions. Word has length 606 [2023-12-16 02:58:44,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:44,724 INFO L495 AbstractCegarLoop]: Abstraction has 1309 states and 2182 transitions. [2023-12-16 02:58:44,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 2 states have call successors, (109), 2 states have call predecessors, (109), 4 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2023-12-16 02:58:44,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 2182 transitions. [2023-12-16 02:58:44,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2023-12-16 02:58:44,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:44,728 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:44,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:44,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-16 02:58:44,937 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:44,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:44,938 INFO L85 PathProgramCache]: Analyzing trace with hash 847144474, now seen corresponding path program 1 times [2023-12-16 02:58:44,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:44,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123485480] [2023-12-16 02:58:44,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:44,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:45,000 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:45,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1192719795] [2023-12-16 02:58:45,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:45,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:45,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:45,002 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:58:45,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 02:58:45,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:45,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 1401 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 02:58:45,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:46,121 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 11444 proven. 93 refuted. 0 times theorem prover too weak. 5575 trivial. 0 not checked. [2023-12-16 02:58:46,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:58:46,819 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 183 proven. 93 refuted. 0 times theorem prover too weak. 16836 trivial. 0 not checked. [2023-12-16 02:58:46,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:46,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123485480] [2023-12-16 02:58:46,820 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:46,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192719795] [2023-12-16 02:58:46,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192719795] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:58:46,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:58:46,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-12-16 02:58:46,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326664492] [2023-12-16 02:58:46,820 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:58:46,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-16 02:58:46,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:46,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-16 02:58:46,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2023-12-16 02:58:46,822 INFO L87 Difference]: Start difference. First operand 1309 states and 2182 transitions. Second operand has 20 states, 20 states have (on average 11.6) internal successors, (232), 20 states have internal predecessors, (232), 5 states have call successors, (160), 3 states have call predecessors, (160), 5 states have return successors, (160), 5 states have call predecessors, (160), 5 states have call successors, (160) [2023-12-16 02:58:55,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:58:55,927 INFO L93 Difference]: Finished difference Result 22609 states and 37461 transitions. [2023-12-16 02:58:55,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2023-12-16 02:58:55,927 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 11.6) internal successors, (232), 20 states have internal predecessors, (232), 5 states have call successors, (160), 3 states have call predecessors, (160), 5 states have return successors, (160), 5 states have call predecessors, (160), 5 states have call successors, (160) Word has length 607 [2023-12-16 02:58:55,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:58:55,983 INFO L225 Difference]: With dead ends: 22609 [2023-12-16 02:58:55,983 INFO L226 Difference]: Without dead ends: 21369 [2023-12-16 02:58:55,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1385 GetRequests, 1228 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9743 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4553, Invalid=20569, Unknown=0, NotChecked=0, Total=25122 [2023-12-16 02:58:55,996 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 6872 mSDsluCounter, 6572 mSDsCounter, 0 mSdLazyCounter, 6197 mSolverCounterSat, 2970 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6910 SdHoareTripleChecker+Valid, 7164 SdHoareTripleChecker+Invalid, 9167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2970 IncrementalHoareTripleChecker+Valid, 6197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:58:55,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6910 Valid, 7164 Invalid, 9167 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2970 Valid, 6197 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-16 02:58:56,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21369 states. [2023-12-16 02:58:56,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21369 to 5215. [2023-12-16 02:58:56,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5215 states, 4326 states have (on average 1.6296809986130374) internal successors, (7050), 4345 states have internal predecessors, (7050), 834 states have call successors, (834), 54 states have call predecessors, (834), 54 states have return successors, (834), 815 states have call predecessors, (834), 834 states have call successors, (834) [2023-12-16 02:58:56,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 8718 transitions. [2023-12-16 02:58:56,545 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 8718 transitions. Word has length 607 [2023-12-16 02:58:56,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:58:56,546 INFO L495 AbstractCegarLoop]: Abstraction has 5215 states and 8718 transitions. [2023-12-16 02:58:56,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 11.6) internal successors, (232), 20 states have internal predecessors, (232), 5 states have call successors, (160), 3 states have call predecessors, (160), 5 states have return successors, (160), 5 states have call predecessors, (160), 5 states have call successors, (160) [2023-12-16 02:58:56,547 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 8718 transitions. [2023-12-16 02:58:56,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2023-12-16 02:58:56,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:58:56,555 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:58:56,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-16 02:58:56,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-16 02:58:56,767 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:58:56,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:58:56,767 INFO L85 PathProgramCache]: Analyzing trace with hash -369009252, now seen corresponding path program 1 times [2023-12-16 02:58:56,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:58:56,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490354328] [2023-12-16 02:58:56,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:56,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:58:56,806 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:58:56,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1335117197] [2023-12-16 02:58:56,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:58:56,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:58:56,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:58:56,807 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:58:56,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-16 02:58:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:58:57,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 1401 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 02:58:57,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:58:57,693 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 6953 proven. 144 refuted. 0 times theorem prover too weak. 10015 trivial. 0 not checked. [2023-12-16 02:58:57,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:58:58,978 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 204 proven. 72 refuted. 0 times theorem prover too weak. 16836 trivial. 0 not checked. [2023-12-16 02:58:58,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:58:58,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490354328] [2023-12-16 02:58:58,978 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:58:58,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335117197] [2023-12-16 02:58:58,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335117197] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:58:58,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:58:58,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2023-12-16 02:58:58,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541631087] [2023-12-16 02:58:58,979 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:58:58,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 02:58:58,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:58:58,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 02:58:58,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-12-16 02:58:58,980 INFO L87 Difference]: Start difference. First operand 5215 states and 8718 transitions. Second operand has 16 states, 16 states have (on average 13.0625) internal successors, (209), 15 states have internal predecessors, (209), 4 states have call successors, (118), 3 states have call predecessors, (118), 5 states have return successors, (119), 4 states have call predecessors, (119), 4 states have call successors, (119) [2023-12-16 02:59:01,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:59:01,639 INFO L93 Difference]: Finished difference Result 12883 states and 21578 transitions. [2023-12-16 02:59:01,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-16 02:59:01,640 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.0625) internal successors, (209), 15 states have internal predecessors, (209), 4 states have call successors, (118), 3 states have call predecessors, (118), 5 states have return successors, (119), 4 states have call predecessors, (119), 4 states have call successors, (119) Word has length 607 [2023-12-16 02:59:01,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:59:01,661 INFO L225 Difference]: With dead ends: 12883 [2023-12-16 02:59:01,661 INFO L226 Difference]: Without dead ends: 7745 [2023-12-16 02:59:01,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1243 GetRequests, 1156 SyntacticMatches, 45 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=571, Invalid=1321, Unknown=0, NotChecked=0, Total=1892 [2023-12-16 02:59:01,672 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 4304 mSDsluCounter, 1912 mSDsCounter, 0 mSdLazyCounter, 2209 mSolverCounterSat, 1688 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4332 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 3897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1688 IncrementalHoareTripleChecker+Valid, 2209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-16 02:59:01,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4332 Valid, 2456 Invalid, 3897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1688 Valid, 2209 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-16 02:59:01,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7745 states. [2023-12-16 02:59:01,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7745 to 3405. [2023-12-16 02:59:01,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3405 states, 2978 states have (on average 1.6279382135661518) internal successors, (4848), 2985 states have internal predecessors, (4848), 392 states have call successors, (392), 34 states have call predecessors, (392), 34 states have return successors, (392), 385 states have call predecessors, (392), 392 states have call successors, (392) [2023-12-16 02:59:01,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3405 states to 3405 states and 5632 transitions. [2023-12-16 02:59:01,960 INFO L78 Accepts]: Start accepts. Automaton has 3405 states and 5632 transitions. Word has length 607 [2023-12-16 02:59:01,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:59:01,961 INFO L495 AbstractCegarLoop]: Abstraction has 3405 states and 5632 transitions. [2023-12-16 02:59:01,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.0625) internal successors, (209), 15 states have internal predecessors, (209), 4 states have call successors, (118), 3 states have call predecessors, (118), 5 states have return successors, (119), 4 states have call predecessors, (119), 4 states have call successors, (119) [2023-12-16 02:59:01,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3405 states and 5632 transitions. [2023-12-16 02:59:01,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2023-12-16 02:59:01,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:59:01,968 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:59:01,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-16 02:59:02,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-16 02:59:02,177 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:59:02,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:59:02,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1115822532, now seen corresponding path program 1 times [2023-12-16 02:59:02,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:59:02,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871647405] [2023-12-16 02:59:02,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:59:02,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:59:02,243 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:59:02,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1460229703] [2023-12-16 02:59:02,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:59:02,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:59:02,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:59:02,252 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:59:02,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-16 02:59:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:59:02,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-16 02:59:02,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:59:03,810 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 10063 proven. 330 refuted. 0 times theorem prover too weak. 6719 trivial. 0 not checked. [2023-12-16 02:59:03,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:59:05,396 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17112 trivial. 0 not checked. [2023-12-16 02:59:05,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:59:05,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871647405] [2023-12-16 02:59:05,397 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:59:05,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460229703] [2023-12-16 02:59:05,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460229703] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 02:59:05,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 02:59:05,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 23 [2023-12-16 02:59:05,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568723854] [2023-12-16 02:59:05,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:59:05,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 02:59:05,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:59:05,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 02:59:05,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2023-12-16 02:59:05,399 INFO L87 Difference]: Start difference. First operand 3405 states and 5632 transitions. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-16 02:59:16,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:59:16,554 INFO L93 Difference]: Finished difference Result 37859 states and 62373 transitions. [2023-12-16 02:59:16,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 02:59:16,555 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) Word has length 608 [2023-12-16 02:59:16,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:59:16,620 INFO L225 Difference]: With dead ends: 37859 [2023-12-16 02:59:16,620 INFO L226 Difference]: Without dead ends: 34531 [2023-12-16 02:59:16,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1241 GetRequests, 1205 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=233, Invalid=1173, Unknown=0, NotChecked=0, Total=1406 [2023-12-16 02:59:16,630 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 4135 mSDsluCounter, 3558 mSDsCounter, 0 mSdLazyCounter, 2134 mSolverCounterSat, 954 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4135 SdHoareTripleChecker+Valid, 4127 SdHoareTripleChecker+Invalid, 3088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 954 IncrementalHoareTripleChecker+Valid, 2134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-12-16 02:59:16,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4135 Valid, 4127 Invalid, 3088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [954 Valid, 2134 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-12-16 02:59:16,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34531 states. [2023-12-16 02:59:18,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34531 to 26075. [2023-12-16 02:59:18,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26075 states, 23189 states have (on average 1.617102936737246) internal successors, (37499), 23284 states have internal predecessors, (37499), 2728 states have call successors, (2728), 157 states have call predecessors, (2728), 157 states have return successors, (2728), 2633 states have call predecessors, (2728), 2728 states have call successors, (2728) [2023-12-16 02:59:18,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26075 states to 26075 states and 42955 transitions. [2023-12-16 02:59:18,812 INFO L78 Accepts]: Start accepts. Automaton has 26075 states and 42955 transitions. Word has length 608 [2023-12-16 02:59:18,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:59:18,813 INFO L495 AbstractCegarLoop]: Abstraction has 26075 states and 42955 transitions. [2023-12-16 02:59:18,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 1 states have call successors, (93), 1 states have call predecessors, (93), 1 states have return successors, (93), 1 states have call predecessors, (93), 1 states have call successors, (93) [2023-12-16 02:59:18,813 INFO L276 IsEmpty]: Start isEmpty. Operand 26075 states and 42955 transitions. [2023-12-16 02:59:18,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2023-12-16 02:59:18,840 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:59:18,841 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:59:18,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-16 02:59:19,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-16 02:59:19,048 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:59:19,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:59:19,048 INFO L85 PathProgramCache]: Analyzing trace with hash 698425926, now seen corresponding path program 1 times [2023-12-16 02:59:19,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:59:19,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86937901] [2023-12-16 02:59:19,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:59:19,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:59:19,084 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:59:19,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720128582] [2023-12-16 02:59:19,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:59:19,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:59:19,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:59:19,086 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:59:19,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-16 02:59:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:59:19,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 1404 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 02:59:19,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:59:20,656 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 9389 proven. 207 refuted. 0 times theorem prover too weak. 7516 trivial. 0 not checked. [2023-12-16 02:59:20,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:59:21,305 INFO L134 CoverageAnalysis]: Checked inductivity of 17112 backedges. 159 proven. 117 refuted. 0 times theorem prover too weak. 16836 trivial. 0 not checked. [2023-12-16 02:59:21,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:59:21,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86937901] [2023-12-16 02:59:21,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:59:21,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720128582] [2023-12-16 02:59:21,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720128582] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:59:21,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:59:21,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2023-12-16 02:59:21,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952639822] [2023-12-16 02:59:21,306 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:59:21,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 02:59:21,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:59:21,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 02:59:21,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-12-16 02:59:21,308 INFO L87 Difference]: Start difference. First operand 26075 states and 42955 transitions. Second operand has 14 states, 14 states have (on average 17.714285714285715) internal successors, (248), 14 states have internal predecessors, (248), 6 states have call successors, (186), 4 states have call predecessors, (186), 7 states have return successors, (186), 6 states have call predecessors, (186), 6 states have call successors, (186) [2023-12-16 02:59:28,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:59:28,030 INFO L93 Difference]: Finished difference Result 89947 states and 148504 transitions. [2023-12-16 02:59:28,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-16 02:59:28,030 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.714285714285715) internal successors, (248), 14 states have internal predecessors, (248), 6 states have call successors, (186), 4 states have call predecessors, (186), 7 states have return successors, (186), 6 states have call predecessors, (186), 6 states have call successors, (186) Word has length 608 [2023-12-16 02:59:28,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:59:28,164 INFO L225 Difference]: With dead ends: 89947 [2023-12-16 02:59:28,164 INFO L226 Difference]: Without dead ends: 63953 [2023-12-16 02:59:28,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1224 GetRequests, 1203 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=187, Invalid=319, Unknown=0, NotChecked=0, Total=506 [2023-12-16 02:59:28,199 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 1262 mSDsluCounter, 2688 mSDsCounter, 0 mSdLazyCounter, 2290 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1457 SdHoareTripleChecker+Valid, 3309 SdHoareTripleChecker+Invalid, 2555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 2290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:59:28,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1457 Valid, 3309 Invalid, 2555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 2290 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-16 02:59:28,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63953 states. [2023-12-16 02:59:31,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63953 to 40489. [2023-12-16 02:59:31,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40489 states, 36131 states have (on average 1.6200769422379675) internal successors, (58535), 36272 states have internal predecessors, (58535), 4114 states have call successors, (4114), 243 states have call predecessors, (4114), 243 states have return successors, (4114), 3973 states have call predecessors, (4114), 4114 states have call successors, (4114) [2023-12-16 02:59:31,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40489 states to 40489 states and 66763 transitions. [2023-12-16 02:59:31,716 INFO L78 Accepts]: Start accepts. Automaton has 40489 states and 66763 transitions. Word has length 608 [2023-12-16 02:59:31,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:59:31,717 INFO L495 AbstractCegarLoop]: Abstraction has 40489 states and 66763 transitions. [2023-12-16 02:59:31,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.714285714285715) internal successors, (248), 14 states have internal predecessors, (248), 6 states have call successors, (186), 4 states have call predecessors, (186), 7 states have return successors, (186), 6 states have call predecessors, (186), 6 states have call successors, (186) [2023-12-16 02:59:31,717 INFO L276 IsEmpty]: Start isEmpty. Operand 40489 states and 66763 transitions. [2023-12-16 02:59:31,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2023-12-16 02:59:31,757 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:59:31,757 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:59:31,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-16 02:59:31,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:59:31,967 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:59:31,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:59:31,968 INFO L85 PathProgramCache]: Analyzing trace with hash 148471878, now seen corresponding path program 1 times [2023-12-16 02:59:31,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:59:31,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706269323] [2023-12-16 02:59:31,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:59:31,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:59:32,003 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:59:32,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1210244626] [2023-12-16 02:59:32,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:59:32,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:59:32,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:59:32,005 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:59:32,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-16 02:59:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:59:32,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-16 02:59:32,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 02:59:33,069 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 02:59:33,070 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 02:59:33,070 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 02:59:33,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-16 02:59:33,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-16 02:59:33,277 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 609 with TraceHistMax 93,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. [2023-12-16 02:59:33,284 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:59:33,286 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 02:59:33,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:59:33 BoogieIcfgContainer [2023-12-16 02:59:33,290 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 02:59:33,291 INFO L158 Benchmark]: Toolchain (without parser) took 61461.00ms. Allocated memory was 249.6MB in the beginning and 2.5GB in the end (delta: 2.2GB). Free memory was 193.3MB in the beginning and 2.1GB in the end (delta: -1.9GB). Peak memory consumption was 349.7MB. Max. memory is 8.0GB. [2023-12-16 02:59:33,292 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 207.6MB. Free memory is still 154.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 02:59:33,292 INFO L158 Benchmark]: CACSL2BoogieTranslator took 395.99ms. Allocated memory is still 249.6MB. Free memory was 193.3MB in the beginning and 161.8MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2023-12-16 02:59:33,294 INFO L158 Benchmark]: Boogie Procedure Inliner took 96.41ms. Allocated memory is still 249.6MB. Free memory was 161.8MB in the beginning and 149.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-16 02:59:33,294 INFO L158 Benchmark]: Boogie Preprocessor took 97.80ms. Allocated memory is still 249.6MB. Free memory was 149.3MB in the beginning and 134.0MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-16 02:59:33,294 INFO L158 Benchmark]: RCFGBuilder took 907.70ms. Allocated memory is still 249.6MB. Free memory was 134.0MB in the beginning and 151.3MB in the end (delta: -17.2MB). Peak memory consumption was 37.3MB. Max. memory is 8.0GB. [2023-12-16 02:59:33,294 INFO L158 Benchmark]: TraceAbstraction took 59943.27ms. Allocated memory was 249.6MB in the beginning and 2.5GB in the end (delta: 2.2GB). Free memory was 150.7MB in the beginning and 2.1GB in the end (delta: -1.9GB). Peak memory consumption was 306.1MB. Max. memory is 8.0GB. [2023-12-16 02:59:33,296 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48ms. Allocated memory is still 207.6MB. Free memory is still 154.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 395.99ms. Allocated memory is still 249.6MB. Free memory was 193.3MB in the beginning and 161.8MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 96.41ms. Allocated memory is still 249.6MB. Free memory was 161.8MB in the beginning and 149.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 97.80ms. Allocated memory is still 249.6MB. Free memory was 149.3MB in the beginning and 134.0MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * RCFGBuilder took 907.70ms. Allocated memory is still 249.6MB. Free memory was 134.0MB in the beginning and 151.3MB in the end (delta: -17.2MB). Peak memory consumption was 37.3MB. Max. memory is 8.0GB. * TraceAbstraction took 59943.27ms. Allocated memory was 249.6MB in the beginning and 2.5GB in the end (delta: 2.2GB). Free memory was 150.7MB in the beginning and 2.1GB in the end (delta: -1.9GB). Peak memory consumption was 306.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 609 with TraceHistMax 93,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 286 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 59.9s, OverallIterations: 15, TraceHistogramMax: 93, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 32.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20203 SdHoareTripleChecker+Valid, 17.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19787 mSDsluCounter, 27308 SdHoareTripleChecker+Invalid, 15.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19943 mSDsCounter, 6021 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14802 IncrementalHoareTripleChecker+Invalid, 20823 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6021 mSolverCounterUnsat, 7365 mSDtfsCounter, 14802 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12961 GetRequests, 12622 SyntacticMatches, 48 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11091 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40489occurred in iteration=14, InterpolantAutomatonStates: 262, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 7.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 53203 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 10.4s InterpolantComputationTime, 9087 NumberOfCodeBlocks, 9087 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 12707 ConstructedInterpolants, 21 QuantifiedInterpolants, 33299 SizeOfPredicates, 108 NumberOfNonLiveVariables, 19614 ConjunctsInSsa, 100 ConjunctsInUnsatCore, 21 InterpolantComputations, 8 PerfectInterpolantSequences, 357576/359352 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown