/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-250_file-17.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 02:49:27,052 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 02:49:27,105 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 02:49:27,112 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 02:49:27,112 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 02:49:27,148 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 02:49:27,148 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 02:49:27,149 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 02:49:27,149 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 02:49:27,153 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 02:49:27,153 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 02:49:27,154 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 02:49:27,154 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 02:49:27,156 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 02:49:27,156 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 02:49:27,156 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 02:49:27,156 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 02:49:27,156 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 02:49:27,157 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 02:49:27,157 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 02:49:27,157 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 02:49:27,157 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 02:49:27,158 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 02:49:27,158 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 02:49:27,158 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 02:49:27,158 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 02:49:27,159 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 02:49:27,159 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 02:49:27,159 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 02:49:27,159 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 02:49:27,160 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 02:49:27,160 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 02:49:27,161 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:49:27,161 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 02:49:27,161 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 02:49:27,161 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 02:49:27,161 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 02:49:27,161 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 02:49:27,162 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 02:49:27,162 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 02:49:27,162 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 02:49:27,162 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 02:49:27,162 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 02:49:27,162 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 02:49:27,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 02:49:27,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 02:49:27,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 02:49:27,455 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 02:49:27,455 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 02:49:27,457 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-17.i [2023-12-16 02:49:28,640 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 02:49:28,885 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 02:49:28,885 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-17.i [2023-12-16 02:49:28,899 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b89d4c695/492542365adb448f8f755d6468f3e022/FLAGef69147ba [2023-12-16 02:49:28,910 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b89d4c695/492542365adb448f8f755d6468f3e022 [2023-12-16 02:49:28,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 02:49:28,914 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 02:49:28,915 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 02:49:28,915 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 02:49:28,919 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 02:49:28,920 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:49:28" (1/1) ... [2023-12-16 02:49:28,921 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ea4ee4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:49:28, skipping insertion in model container [2023-12-16 02:49:28,921 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:49:28" (1/1) ... [2023-12-16 02:49:28,965 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 02:49:29,081 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-17.i[916,929] [2023-12-16 02:49:29,223 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:49:29,247 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 02:49:29,259 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-17.i[916,929] [2023-12-16 02:49:29,347 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:49:29,368 INFO L206 MainTranslator]: Completed translation [2023-12-16 02:49:29,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:49:29 WrapperNode [2023-12-16 02:49:29,368 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 02:49:29,369 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 02:49:29,369 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 02:49:29,370 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 02:49:29,376 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:49:29" (1/1) ... [2023-12-16 02:49:29,392 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:49:29" (1/1) ... [2023-12-16 02:49:29,440 INFO L138 Inliner]: procedures = 26, calls = 100, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 561 [2023-12-16 02:49:29,440 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 02:49:29,441 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 02:49:29,441 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 02:49:29,441 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 02:49:29,451 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:49:29" (1/1) ... [2023-12-16 02:49:29,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:49:29" (1/1) ... [2023-12-16 02:49:29,457 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:49:29" (1/1) ... [2023-12-16 02:49:29,478 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 02:49:29,479 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:49:29" (1/1) ... [2023-12-16 02:49:29,479 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:49:29" (1/1) ... [2023-12-16 02:49:29,518 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:49:29" (1/1) ... [2023-12-16 02:49:29,522 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:49:29" (1/1) ... [2023-12-16 02:49:29,527 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:49:29" (1/1) ... [2023-12-16 02:49:29,546 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:49:29" (1/1) ... [2023-12-16 02:49:29,556 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 02:49:29,557 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 02:49:29,557 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 02:49:29,557 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 02:49:29,558 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:49:29" (1/1) ... [2023-12-16 02:49:29,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:49:29,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:49:29,585 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 02:49:29,610 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 02:49:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 02:49:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 02:49:29,617 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 02:49:29,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 02:49:29,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 02:49:29,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 02:49:29,763 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 02:49:29,767 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 02:49:30,414 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 02:49:30,445 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 02:49:30,445 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 02:49:30,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:49:30 BoogieIcfgContainer [2023-12-16 02:49:30,446 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 02:49:30,447 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 02:49:30,448 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 02:49:30,450 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 02:49:30,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:49:28" (1/3) ... [2023-12-16 02:49:30,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57be0993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:49:30, skipping insertion in model container [2023-12-16 02:49:30,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:49:29" (2/3) ... [2023-12-16 02:49:30,452 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57be0993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:49:30, skipping insertion in model container [2023-12-16 02:49:30,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:49:30" (3/3) ... [2023-12-16 02:49:30,453 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-17.i [2023-12-16 02:49:30,469 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 02:49:30,470 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 02:49:30,517 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 02:49:30,522 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;@ed320cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 02:49:30,523 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 02:49:30,528 INFO L276 IsEmpty]: Start isEmpty. Operand has 224 states, 134 states have (on average 1.507462686567164) internal successors, (202), 135 states have internal predecessors, (202), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-16 02:49:30,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2023-12-16 02:49:30,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:49:30,580 INFO L195 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:49:30,581 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:49:30,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:49:30,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1383235035, now seen corresponding path program 1 times [2023-12-16 02:49:30,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:49:30,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432904894] [2023-12-16 02:49:30,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:49:30,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:49:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:49:31,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:49:31,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432904894] [2023-12-16 02:49:31,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 02:49:31,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212730383] [2023-12-16 02:49:31,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:49:31,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:49:31,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:49:31,025 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 02:49:31,047 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 02:49:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:49:31,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 02:49:31,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:49:31,488 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 14792 trivial. 0 not checked. [2023-12-16 02:49:31,489 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:49:31,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212730383] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:49:31,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:49:31,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:49:31,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251839232] [2023-12-16 02:49:31,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:49:31,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 02:49:31,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:49:31,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 02:49:31,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:49:31,528 INFO L87 Difference]: Start difference. First operand has 224 states, 134 states have (on average 1.507462686567164) internal successors, (202), 135 states have internal predecessors, (202), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) Second operand has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 2 states have call successors, (87) [2023-12-16 02:49:31,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:49:31,589 INFO L93 Difference]: Finished difference Result 443 states and 833 transitions. [2023-12-16 02:49:31,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 02:49:31,592 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 2 states have call successors, (87) Word has length 533 [2023-12-16 02:49:31,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:49:31,600 INFO L225 Difference]: With dead ends: 443 [2023-12-16 02:49:31,600 INFO L226 Difference]: Without dead ends: 220 [2023-12-16 02:49:31,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 532 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 02:49:31,610 INFO L413 NwaCegarLoop]: 363 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, 363 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 02:49:31,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 363 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:49:31,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-12-16 02:49:31,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2023-12-16 02:49:31,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 131 states have (on average 1.465648854961832) internal successors, (192), 131 states have internal predecessors, (192), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-16 02:49:31,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 366 transitions. [2023-12-16 02:49:31,682 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 366 transitions. Word has length 533 [2023-12-16 02:49:31,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:49:31,683 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 366 transitions. [2023-12-16 02:49:31,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 2 states have call successors, (87) [2023-12-16 02:49:31,684 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 366 transitions. [2023-12-16 02:49:31,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2023-12-16 02:49:31,697 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:49:31,698 INFO L195 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:49:31,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 02:49:31,909 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 02:49:31,909 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:49:31,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:49:31,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1309324827, now seen corresponding path program 1 times [2023-12-16 02:49:31,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:49:31,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249370417] [2023-12-16 02:49:31,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:49:31,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:49:32,056 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:49:32,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1212918039] [2023-12-16 02:49:32,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:49:32,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:49:32,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:49:32,061 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 02:49:32,062 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 02:49:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:49:32,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:49:32,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:49:32,518 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14964 trivial. 0 not checked. [2023-12-16 02:49:32,518 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:49:32,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:49:32,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249370417] [2023-12-16 02:49:32,519 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:49:32,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212918039] [2023-12-16 02:49:32,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212918039] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:49:32,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:49:32,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:49:32,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619403768] [2023-12-16 02:49:32,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:49:32,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:49:32,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:49:32,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:49:32,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:49:32,527 INFO L87 Difference]: Start difference. First operand 220 states and 366 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2023-12-16 02:49:32,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:49:32,684 INFO L93 Difference]: Finished difference Result 654 states and 1088 transitions. [2023-12-16 02:49:32,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:49:32,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) Word has length 533 [2023-12-16 02:49:32,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:49:32,712 INFO L225 Difference]: With dead ends: 654 [2023-12-16 02:49:32,713 INFO L226 Difference]: Without dead ends: 435 [2023-12-16 02:49:32,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 531 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 02:49:32,716 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 354 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:49:32,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 1056 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:49:32,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2023-12-16 02:49:32,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 433. [2023-12-16 02:49:32,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 256 states have (on average 1.453125) internal successors, (372), 256 states have internal predecessors, (372), 174 states have call successors, (174), 2 states have call predecessors, (174), 2 states have return successors, (174), 174 states have call predecessors, (174), 174 states have call successors, (174) [2023-12-16 02:49:32,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 720 transitions. [2023-12-16 02:49:32,824 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 720 transitions. Word has length 533 [2023-12-16 02:49:32,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:49:32,826 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 720 transitions. [2023-12-16 02:49:32,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2023-12-16 02:49:32,826 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 720 transitions. [2023-12-16 02:49:32,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2023-12-16 02:49:32,838 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:49:32,839 INFO L195 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:49:32,849 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 02:49:33,048 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 02:49:33,048 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:49:33,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:49:33,049 INFO L85 PathProgramCache]: Analyzing trace with hash 722116327, now seen corresponding path program 1 times [2023-12-16 02:49:33,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:49:33,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040643068] [2023-12-16 02:49:33,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:49:33,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:49:33,151 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:49:33,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1687995215] [2023-12-16 02:49:33,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:49:33,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:49:33,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:49:33,159 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 02:49:33,162 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 02:49:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:49:33,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 02:49:33,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:49:34,945 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14964 trivial. 0 not checked. [2023-12-16 02:49:34,945 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:49:34,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:49:34,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040643068] [2023-12-16 02:49:34,946 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:49:34,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687995215] [2023-12-16 02:49:34,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687995215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:49:34,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:49:34,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 02:49:34,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244723653] [2023-12-16 02:49:34,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:49:34,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 02:49:34,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:49:34,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 02:49:34,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 02:49:34,949 INFO L87 Difference]: Start difference. First operand 433 states and 720 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2023-12-16 02:49:35,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:49:35,389 INFO L93 Difference]: Finished difference Result 1211 states and 2021 transitions. [2023-12-16 02:49:35,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 02:49:35,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) Word has length 533 [2023-12-16 02:49:35,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:49:35,397 INFO L225 Difference]: With dead ends: 1211 [2023-12-16 02:49:35,397 INFO L226 Difference]: Without dead ends: 779 [2023-12-16 02:49:35,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-12-16 02:49:35,401 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 496 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:49:35,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 1325 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 02:49:35,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2023-12-16 02:49:35,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 676. [2023-12-16 02:49:35,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 411 states have (on average 1.4817518248175183) internal successors, (609), 411 states have internal predecessors, (609), 261 states have call successors, (261), 3 states have call predecessors, (261), 3 states have return successors, (261), 261 states have call predecessors, (261), 261 states have call successors, (261) [2023-12-16 02:49:35,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1131 transitions. [2023-12-16 02:49:35,482 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1131 transitions. Word has length 533 [2023-12-16 02:49:35,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:49:35,483 INFO L495 AbstractCegarLoop]: Abstraction has 676 states and 1131 transitions. [2023-12-16 02:49:35,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2023-12-16 02:49:35,483 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1131 transitions. [2023-12-16 02:49:35,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2023-12-16 02:49:35,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:49:35,487 INFO L195 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:49:35,499 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 02:49:35,694 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 02:49:35,695 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:49:35,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:49:35,696 INFO L85 PathProgramCache]: Analyzing trace with hash -80551934, now seen corresponding path program 1 times [2023-12-16 02:49:35,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:49:35,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916821268] [2023-12-16 02:49:35,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:49:35,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:49:35,759 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:49:35,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [396452776] [2023-12-16 02:49:35,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:49:35,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:49:35,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:49:35,761 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 02:49:35,764 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 02:49:36,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:49:36,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 1176 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 02:49:36,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:49:37,363 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 3146 proven. 228 refuted. 0 times theorem prover too weak. 11590 trivial. 0 not checked. [2023-12-16 02:49:37,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:49:38,158 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 30 proven. 228 refuted. 0 times theorem prover too weak. 14706 trivial. 0 not checked. [2023-12-16 02:49:38,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:49:38,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916821268] [2023-12-16 02:49:38,159 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:49:38,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396452776] [2023-12-16 02:49:38,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396452776] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:49:38,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:49:38,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-16 02:49:38,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688240599] [2023-12-16 02:49:38,160 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:49:38,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 02:49:38,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:49:38,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 02:49:38,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-12-16 02:49:38,165 INFO L87 Difference]: Start difference. First operand 676 states and 1131 transitions. Second operand has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 4 states have call successors, (174), 3 states have call predecessors, (174), 5 states have return successors, (174), 4 states have call predecessors, (174), 4 states have call successors, (174) [2023-12-16 02:49:40,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:49:40,640 INFO L93 Difference]: Finished difference Result 2423 states and 3987 transitions. [2023-12-16 02:49:40,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-16 02:49:40,641 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 4 states have call successors, (174), 3 states have call predecessors, (174), 5 states have return successors, (174), 4 states have call predecessors, (174), 4 states have call successors, (174) Word has length 534 [2023-12-16 02:49:40,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:49:40,654 INFO L225 Difference]: With dead ends: 2423 [2023-12-16 02:49:40,654 INFO L226 Difference]: Without dead ends: 1991 [2023-12-16 02:49:40,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1093 GetRequests, 1057 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=374, Invalid=958, Unknown=0, NotChecked=0, Total=1332 [2023-12-16 02:49:40,659 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 1421 mSDsluCounter, 2608 mSDsCounter, 0 mSdLazyCounter, 2424 mSolverCounterSat, 423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1432 SdHoareTripleChecker+Valid, 3415 SdHoareTripleChecker+Invalid, 2847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 423 IncrementalHoareTripleChecker+Valid, 2424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:49:40,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1432 Valid, 3415 Invalid, 2847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [423 Valid, 2424 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-16 02:49:40,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2023-12-16 02:49:40,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1358. [2023-12-16 02:49:40,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 865 states have (on average 1.454335260115607) internal successors, (1258), 870 states have internal predecessors, (1258), 476 states have call successors, (476), 16 states have call predecessors, (476), 16 states have return successors, (476), 471 states have call predecessors, (476), 476 states have call successors, (476) [2023-12-16 02:49:40,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 2210 transitions. [2023-12-16 02:49:40,831 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 2210 transitions. Word has length 534 [2023-12-16 02:49:40,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:49:40,832 INFO L495 AbstractCegarLoop]: Abstraction has 1358 states and 2210 transitions. [2023-12-16 02:49:40,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 4 states have call successors, (174), 3 states have call predecessors, (174), 5 states have return successors, (174), 4 states have call predecessors, (174), 4 states have call successors, (174) [2023-12-16 02:49:40,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 2210 transitions. [2023-12-16 02:49:40,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2023-12-16 02:49:40,837 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:49:40,837 INFO L195 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:49:40,848 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 02:49:41,045 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 02:49:41,046 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:49:41,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:49:41,047 INFO L85 PathProgramCache]: Analyzing trace with hash -473578944, now seen corresponding path program 1 times [2023-12-16 02:49:41,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:49:41,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677130171] [2023-12-16 02:49:41,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:49:41,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:49:41,102 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:49:41,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [440145416] [2023-12-16 02:49:41,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:49:41,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:49:41,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:49:41,104 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 02:49:41,107 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 02:49:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:49:41,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 02:49:41,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:49:43,505 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 11150 proven. 150 refuted. 0 times theorem prover too weak. 3664 trivial. 0 not checked. [2023-12-16 02:49:43,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:50:16,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:50:16,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677130171] [2023-12-16 02:50:16,348 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:50:16,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440145416] [2023-12-16 02:50:16,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440145416] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:50:16,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-16 02:50:16,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-12-16 02:50:16,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348854832] [2023-12-16 02:50:16,349 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-16 02:50:16,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 02:50:16,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:50:16,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 02:50:16,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=361, Unknown=5, NotChecked=0, Total=462 [2023-12-16 02:50:16,351 INFO L87 Difference]: Start difference. First operand 1358 states and 2210 transitions. Second operand has 15 states, 15 states have (on average 7.8) internal successors, (117), 15 states have internal predecessors, (117), 4 states have call successors, (87), 4 states have call predecessors, (87), 6 states have return successors, (87), 4 states have call predecessors, (87), 4 states have call successors, (87) Received shutdown request... [2023-12-16 02:50:31,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-16 02:50:31,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 570 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 29.5s TimeCoverageRelationStatistics Valid=720, Invalid=1927, Unknown=5, NotChecked=0, Total=2652 [2023-12-16 02:50:31,569 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 1994 mSDsluCounter, 1446 mSDsCounter, 0 mSdLazyCounter, 2176 mSolverCounterSat, 565 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2063 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 2741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 565 IncrementalHoareTripleChecker+Valid, 2176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2023-12-16 02:50:31,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2063 Valid, 1717 Invalid, 2741 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [565 Valid, 2176 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2023-12-16 02:50:31,570 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 02:50:31,581 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 02:50:31,590 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 02:50:31,590 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 02:50:31,779 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 02:50:31,779 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (1358states) and FLOYD_HOARE automaton (currently 39 states, 15 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-10-1 term,while SimplifyDDA2 was simplifying 10 xjuncts wrt. a ATOM-1 context. [2023-12-16 02:50:31,786 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-12-16 02:50:31,788 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 02:50:31,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:50:31 BoogieIcfgContainer [2023-12-16 02:50:31,791 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 02:50:31,792 INFO L158 Benchmark]: Toolchain (without parser) took 62878.11ms. Allocated memory was 217.1MB in the beginning and 533.7MB in the end (delta: 316.7MB). Free memory was 152.1MB in the beginning and 332.8MB in the end (delta: -180.7MB). Peak memory consumption was 136.2MB. Max. memory is 8.0GB. [2023-12-16 02:50:31,792 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 217.1MB. Free memory is still 167.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 02:50:31,794 INFO L158 Benchmark]: CACSL2BoogieTranslator took 453.62ms. Allocated memory was 217.1MB in the beginning and 290.5MB in the end (delta: 73.4MB). Free memory was 151.8MB in the beginning and 252.1MB in the end (delta: -100.3MB). Peak memory consumption was 25.6MB. Max. memory is 8.0GB. [2023-12-16 02:50:31,795 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.89ms. Allocated memory is still 290.5MB. Free memory was 252.1MB in the beginning and 245.7MB in the end (delta: 6.4MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-16 02:50:31,795 INFO L158 Benchmark]: Boogie Preprocessor took 115.35ms. Allocated memory is still 290.5MB. Free memory was 245.7MB in the beginning and 237.9MB in the end (delta: 7.8MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-16 02:50:31,795 INFO L158 Benchmark]: RCFGBuilder took 888.82ms. Allocated memory is still 290.5MB. Free memory was 237.9MB in the beginning and 185.5MB in the end (delta: 52.4MB). Peak memory consumption was 52.4MB. Max. memory is 8.0GB. [2023-12-16 02:50:31,796 INFO L158 Benchmark]: TraceAbstraction took 61343.89ms. Allocated memory was 290.5MB in the beginning and 533.7MB in the end (delta: 243.3MB). Free memory was 185.0MB in the beginning and 332.8MB in the end (delta: -147.8MB). Peak memory consumption was 94.9MB. Max. memory is 8.0GB. [2023-12-16 02:50:31,797 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 217.1MB. Free memory is still 167.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 453.62ms. Allocated memory was 217.1MB in the beginning and 290.5MB in the end (delta: 73.4MB). Free memory was 151.8MB in the beginning and 252.1MB in the end (delta: -100.3MB). Peak memory consumption was 25.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 70.89ms. Allocated memory is still 290.5MB. Free memory was 252.1MB in the beginning and 245.7MB in the end (delta: 6.4MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 115.35ms. Allocated memory is still 290.5MB. Free memory was 245.7MB in the beginning and 237.9MB in the end (delta: 7.8MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * RCFGBuilder took 888.82ms. Allocated memory is still 290.5MB. Free memory was 237.9MB in the beginning and 185.5MB in the end (delta: 52.4MB). Peak memory consumption was 52.4MB. Max. memory is 8.0GB. * TraceAbstraction took 61343.89ms. Allocated memory was 290.5MB in the beginning and 533.7MB in the end (delta: 243.3MB). Free memory was 185.0MB in the beginning and 332.8MB in the end (delta: -147.8MB). Peak memory consumption was 94.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (1358states) and FLOYD_HOARE automaton (currently 39 states, 15 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-10-1 term,while SimplifyDDA2 was simplifying 10 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 224 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 61.3s, OverallIterations: 5, TraceHistogramMax: 87, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 18.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4345 SdHoareTripleChecker+Valid, 12.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4265 mSDsluCounter, 7876 SdHoareTripleChecker+Invalid, 11.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5375 mSDsCounter, 1170 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4844 IncrementalHoareTripleChecker+Invalid, 6014 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1170 mSolverCounterUnsat, 2501 mSDtfsCounter, 4844 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3313 GetRequests, 3218 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 29.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1358occurred in iteration=4, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 738 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 39.0s InterpolantComputationTime, 3200 NumberOfCodeBlocks, 3200 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 3195 ConstructedInterpolants, 0 QuantifiedInterpolants, 14499 SizeOfPredicates, 18 NumberOfNonLiveVariables, 5872 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 89178/89784 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