./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_2_7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_2_7.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5365e3b9adf0a1dadb935cfdb4266af37826f3120fbeff3f7ce577b21fb856a6 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 04:47:38,613 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 04:47:38,695 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 04:47:38,699 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 04:47:38,700 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 04:47:38,726 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 04:47:38,726 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 04:47:38,727 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 04:47:38,727 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 04:47:38,728 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 04:47:38,728 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 04:47:38,728 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 04:47:38,729 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 04:47:38,729 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 04:47:38,730 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 04:47:38,730 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 04:47:38,733 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 04:47:38,733 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 04:47:38,735 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 04:47:38,736 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 04:47:38,736 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 04:47:38,736 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 04:47:38,737 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 04:47:38,737 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 04:47:38,737 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 04:47:38,737 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 04:47:38,737 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 04:47:38,738 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 04:47:38,738 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 04:47:38,738 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 04:47:38,739 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 04:47:38,739 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 04:47:38,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 04:47:38,739 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 04:47:38,740 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 04:47:38,740 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 04:47:38,740 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 04:47:38,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 04:47:38,741 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 04:47:38,741 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 04:47:38,741 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 04:47:38,743 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 04:47:38,744 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5365e3b9adf0a1dadb935cfdb4266af37826f3120fbeff3f7ce577b21fb856a6 [2024-10-14 04:47:38,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 04:47:39,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 04:47:39,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 04:47:39,025 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 04:47:39,025 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 04:47:39,027 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_2_7.i [2024-10-14 04:47:40,377 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 04:47:40,563 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 04:47:40,564 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_2_7.i [2024-10-14 04:47:40,571 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/377ed875c/90bf3d238ce24115acdee300e948851c/FLAG4440a3b4e [2024-10-14 04:47:40,954 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/377ed875c/90bf3d238ce24115acdee300e948851c [2024-10-14 04:47:40,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 04:47:40,958 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 04:47:40,961 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 04:47:40,962 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 04:47:40,967 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 04:47:40,968 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:47:40" (1/1) ... [2024-10-14 04:47:40,971 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a0452ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:40, skipping insertion in model container [2024-10-14 04:47:40,971 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:47:40" (1/1) ... [2024-10-14 04:47:40,997 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 04:47:41,162 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_2_7.i[1224,1237] [2024-10-14 04:47:41,203 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_2_7.i[2827,2840] [2024-10-14 04:47:41,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 04:47:41,213 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 04:47:41,225 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_2_7.i[1224,1237] [2024-10-14 04:47:41,238 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_2_7.i[2827,2840] [2024-10-14 04:47:41,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 04:47:41,256 INFO L204 MainTranslator]: Completed translation [2024-10-14 04:47:41,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:41 WrapperNode [2024-10-14 04:47:41,257 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 04:47:41,258 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 04:47:41,258 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 04:47:41,258 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 04:47:41,297 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:41" (1/1) ... [2024-10-14 04:47:41,306 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:41" (1/1) ... [2024-10-14 04:47:41,325 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 79 [2024-10-14 04:47:41,325 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 04:47:41,326 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 04:47:41,326 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 04:47:41,326 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 04:47:41,336 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:41" (1/1) ... [2024-10-14 04:47:41,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:41" (1/1) ... [2024-10-14 04:47:41,338 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:41" (1/1) ... [2024-10-14 04:47:41,351 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-10-14 04:47:41,352 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:41" (1/1) ... [2024-10-14 04:47:41,352 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:41" (1/1) ... [2024-10-14 04:47:41,356 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:41" (1/1) ... [2024-10-14 04:47:41,359 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:41" (1/1) ... [2024-10-14 04:47:41,360 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:41" (1/1) ... [2024-10-14 04:47:41,361 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:41" (1/1) ... [2024-10-14 04:47:41,363 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 04:47:41,364 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 04:47:41,364 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 04:47:41,364 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 04:47:41,365 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:41" (1/1) ... [2024-10-14 04:47:41,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 04:47:41,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 04:47:41,397 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) [2024-10-14 04:47:41,404 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 [2024-10-14 04:47:41,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 04:47:41,451 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-10-14 04:47:41,451 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-10-14 04:47:41,452 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-10-14 04:47:41,452 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-10-14 04:47:41,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 04:47:41,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 04:47:41,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 04:47:41,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 04:47:41,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-14 04:47:41,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-14 04:47:41,524 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 04:47:41,526 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 04:47:41,692 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-10-14 04:47:41,692 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 04:47:41,718 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 04:47:41,718 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 04:47:41,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:47:41 BoogieIcfgContainer [2024-10-14 04:47:41,719 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 04:47:41,721 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 04:47:41,721 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 04:47:41,724 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 04:47:41,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:47:40" (1/3) ... [2024-10-14 04:47:41,725 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@643fc2ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:47:41, skipping insertion in model container [2024-10-14 04:47:41,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:41" (2/3) ... [2024-10-14 04:47:41,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@643fc2ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:47:41, skipping insertion in model container [2024-10-14 04:47:41,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:47:41" (3/3) ... [2024-10-14 04:47:41,727 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_2_7.i [2024-10-14 04:47:41,743 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 04:47:41,744 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-14 04:47:41,795 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 04:47:41,802 INFO L333 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, 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;@506dd537, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 04:47:41,803 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-14 04:47:41,807 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 24 states have (on average 1.5) internal successors, (36), 26 states have internal predecessors, (36), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-14 04:47:41,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-14 04:47:41,815 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:47:41,816 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:47:41,816 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:47:41,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:47:41,821 INFO L85 PathProgramCache]: Analyzing trace with hash 531794030, now seen corresponding path program 1 times [2024-10-14 04:47:41,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:47:41,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98711533] [2024-10-14 04:47:41,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:47:41,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:47:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:47:42,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:47:42,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:47:42,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98711533] [2024-10-14 04:47:42,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98711533] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:47:42,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:47:42,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 04:47:42,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51188605] [2024-10-14 04:47:42,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:47:42,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:47:42,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:47:42,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:47:42,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 04:47:42,199 INFO L87 Difference]: Start difference. First operand has 37 states, 24 states have (on average 1.5) internal successors, (36), 26 states have internal predecessors, (36), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:47:42,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:47:42,266 INFO L93 Difference]: Finished difference Result 73 states and 102 transitions. [2024-10-14 04:47:42,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:47:42,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-10-14 04:47:42,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:47:42,275 INFO L225 Difference]: With dead ends: 73 [2024-10-14 04:47:42,276 INFO L226 Difference]: Without dead ends: 36 [2024-10-14 04:47:42,279 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 04:47:42,282 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 7 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 04:47:42,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 62 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 04:47:42,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-10-14 04:47:42,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2024-10-14 04:47:42,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 23 states have internal predecessors, (26), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-14 04:47:42,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2024-10-14 04:47:42,326 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 10 [2024-10-14 04:47:42,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:47:42,326 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2024-10-14 04:47:42,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:47:42,327 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2024-10-14 04:47:42,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-14 04:47:42,331 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:47:42,331 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:47:42,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 04:47:42,332 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:47:42,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:47:42,333 INFO L85 PathProgramCache]: Analyzing trace with hash 2010454398, now seen corresponding path program 1 times [2024-10-14 04:47:42,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:47:42,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714883947] [2024-10-14 04:47:42,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:47:42,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:47:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:47:42,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:47:42,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:47:42,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714883947] [2024-10-14 04:47:42,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714883947] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:47:42,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:47:42,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 04:47:42,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056858891] [2024-10-14 04:47:42,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:47:42,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:47:42,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:47:42,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:47:42,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 04:47:42,463 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:47:42,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:47:42,496 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2024-10-14 04:47:42,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:47:42,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-10-14 04:47:42,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:47:42,498 INFO L225 Difference]: With dead ends: 49 [2024-10-14 04:47:42,498 INFO L226 Difference]: Without dead ends: 35 [2024-10-14 04:47:42,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 04:47:42,500 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 04:47:42,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 57 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 04:47:42,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-10-14 04:47:42,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-10-14 04:47:42,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 25 states have internal predecessors, (28), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-14 04:47:42,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2024-10-14 04:47:42,515 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 12 [2024-10-14 04:47:42,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:47:42,515 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2024-10-14 04:47:42,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:47:42,515 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2024-10-14 04:47:42,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-14 04:47:42,516 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:47:42,517 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:47:42,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 04:47:42,517 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:47:42,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:47:42,519 INFO L85 PathProgramCache]: Analyzing trace with hash -466694725, now seen corresponding path program 1 times [2024-10-14 04:47:42,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:47:42,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088608836] [2024-10-14 04:47:42,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:47:42,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:47:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:47:42,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:47:42,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:47:42,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088608836] [2024-10-14 04:47:42,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088608836] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:47:42,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:47:42,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 04:47:42,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432128827] [2024-10-14 04:47:42,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:47:42,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:47:42,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:47:42,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:47:42,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 04:47:42,654 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:47:42,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:47:42,691 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2024-10-14 04:47:42,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:47:42,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-10-14 04:47:42,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:47:42,693 INFO L225 Difference]: With dead ends: 50 [2024-10-14 04:47:42,693 INFO L226 Difference]: Without dead ends: 37 [2024-10-14 04:47:42,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 04:47:42,695 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 04:47:42,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 04:47:42,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-10-14 04:47:42,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-10-14 04:47:42,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 25 states have (on average 1.2) internal successors, (30), 27 states have internal predecessors, (30), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-14 04:47:42,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2024-10-14 04:47:42,703 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 14 [2024-10-14 04:47:42,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:47:42,703 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2024-10-14 04:47:42,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:47:42,704 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2024-10-14 04:47:42,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-14 04:47:42,705 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:47:42,705 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:47:42,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 04:47:42,706 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:47:42,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:47:42,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1903157512, now seen corresponding path program 1 times [2024-10-14 04:47:42,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:47:42,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089838787] [2024-10-14 04:47:42,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:47:42,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:47:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:47:42,918 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:47:42,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 04:47:42,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089838787] [2024-10-14 04:47:42,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089838787] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 04:47:42,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474461065] [2024-10-14 04:47:42,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:47:42,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 04:47:42,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 04:47:42,929 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) [2024-10-14 04:47:42,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 04:47:43,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:47:43,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 04:47:43,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 04:47:43,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:47:43,111 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 04:47:43,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:47:43,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474461065] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 04:47:43,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 04:47:43,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-10-14 04:47:43,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90154726] [2024-10-14 04:47:43,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 04:47:43,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 04:47:43,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 04:47:43,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 04:47:43,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-10-14 04:47:43,183 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:47:43,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:47:43,250 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2024-10-14 04:47:43,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 04:47:43,251 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-10-14 04:47:43,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:47:43,252 INFO L225 Difference]: With dead ends: 54 [2024-10-14 04:47:43,253 INFO L226 Difference]: Without dead ends: 41 [2024-10-14 04:47:43,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-10-14 04:47:43,254 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 04:47:43,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 156 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 04:47:43,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-10-14 04:47:43,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-10-14 04:47:43,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 31 states have internal predecessors, (34), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-14 04:47:43,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2024-10-14 04:47:43,261 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 16 [2024-10-14 04:47:43,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:47:43,261 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2024-10-14 04:47:43,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:47:43,262 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2024-10-14 04:47:43,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-14 04:47:43,262 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:47:43,263 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:47:43,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 04:47:43,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 04:47:43,467 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:47:43,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:47:43,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1416757394, now seen corresponding path program 1 times [2024-10-14 04:47:43,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 04:47:43,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103816906] [2024-10-14 04:47:43,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:47:43,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 04:47:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 04:47:43,482 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 04:47:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 04:47:43,513 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 04:47:43,514 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 04:47:43,515 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-10-14 04:47:43,517 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-14 04:47:43,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 04:47:43,521 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-14 04:47:43,541 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-14 04:47:43,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:47:43 BoogieIcfgContainer [2024-10-14 04:47:43,546 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-14 04:47:43,547 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-14 04:47:43,547 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-14 04:47:43,547 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-14 04:47:43,548 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:47:41" (3/4) ... [2024-10-14 04:47:43,550 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-14 04:47:43,551 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-14 04:47:43,551 INFO L158 Benchmark]: Toolchain (without parser) took 2593.34ms. Allocated memory is still 182.5MB. Free memory was 126.3MB in the beginning and 127.7MB in the end (delta: -1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 04:47:43,551 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 94.4MB. Free memory is still 49.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 04:47:43,552 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.63ms. Allocated memory is still 182.5MB. Free memory was 126.3MB in the beginning and 152.5MB in the end (delta: -26.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-14 04:47:43,552 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.42ms. Allocated memory is still 182.5MB. Free memory was 152.5MB in the beginning and 151.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 04:47:43,552 INFO L158 Benchmark]: Boogie Preprocessor took 37.51ms. Allocated memory is still 182.5MB. Free memory was 151.4MB in the beginning and 149.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 04:47:43,552 INFO L158 Benchmark]: RCFGBuilder took 355.15ms. Allocated memory is still 182.5MB. Free memory was 149.3MB in the beginning and 133.6MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-14 04:47:43,553 INFO L158 Benchmark]: TraceAbstraction took 1825.40ms. Allocated memory is still 182.5MB. Free memory was 132.5MB in the beginning and 127.7MB in the end (delta: 4.8MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. [2024-10-14 04:47:43,553 INFO L158 Benchmark]: Witness Printer took 3.98ms. Allocated memory is still 182.5MB. Free memory is still 127.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 04:47:43,557 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 94.4MB. Free memory is still 49.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.63ms. Allocated memory is still 182.5MB. Free memory was 126.3MB in the beginning and 152.5MB in the end (delta: -26.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.42ms. Allocated memory is still 182.5MB. Free memory was 152.5MB in the beginning and 151.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.51ms. Allocated memory is still 182.5MB. Free memory was 151.4MB in the beginning and 149.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 355.15ms. Allocated memory is still 182.5MB. Free memory was 149.3MB in the beginning and 133.6MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1825.40ms. Allocated memory is still 182.5MB. Free memory was 132.5MB in the beginning and 127.7MB in the end (delta: 4.8MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. * Witness Printer took 3.98ms. Allocated memory is still 182.5MB. Free memory is still 127.7MB. There was no memory consumed. Max. memory is 16.1GB. * 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 - UnprovableResult [Line: 109]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 98, overapproximation of someBinaryDOUBLEComparisonOperation at line 108, overapproximation of someBinaryArithmeticFLOAToperation at line 102. Possible FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L82] COND FALSE !(!cond) [L98] RET assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L100] CALL, EXPR f(IN) VAL [\old(x)=110] [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L100] RET, EXPR f(IN) VAL [IN=110] [L100] CALL, EXPR fp(IN) VAL [\old(x)=110] [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L100] RET, EXPR fp(IN) VAL [IN=110] [L100] float x = IN - f(IN)/fp(IN); [L102] CALL, EXPR f(x) VAL [\old(x)=111] [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L102] RET, EXPR f(x) VAL [IN=110, x=111] [L102] CALL, EXPR fp(x) VAL [\old(x)=111] [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L102] RET, EXPR fp(x) VAL [IN=110, x=111] [L102] x = x - f(x)/fp(x) [L108] COND TRUE !(x < 0.1) VAL [IN=110] [L109] reach_error() VAL [IN=110] - UnprovableResult [Line: 27]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 37 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 330 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 206 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 109 IncrementalHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 124 mSDtfsCounter, 109 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=4, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 249 SizeOfPredicates, 2 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 5/13 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: unable to determine feasibility of some traces [2024-10-14 04:47:43,588 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_2_7.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5365e3b9adf0a1dadb935cfdb4266af37826f3120fbeff3f7ce577b21fb856a6 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 04:47:45,766 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 04:47:45,850 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-10-14 04:47:45,855 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 04:47:45,856 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 04:47:45,888 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 04:47:45,892 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 04:47:45,892 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 04:47:45,893 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 04:47:45,893 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 04:47:45,893 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 04:47:45,894 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 04:47:45,894 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 04:47:45,894 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 04:47:45,895 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 04:47:45,896 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 04:47:45,897 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 04:47:45,897 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 04:47:45,897 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 04:47:45,898 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 04:47:45,898 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 04:47:45,898 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 04:47:45,899 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 04:47:45,899 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 04:47:45,899 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-14 04:47:45,899 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 04:47:45,900 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-14 04:47:45,900 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 04:47:45,900 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 04:47:45,900 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 04:47:45,901 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 04:47:45,901 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 04:47:45,901 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 04:47:45,901 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 04:47:45,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 04:47:45,908 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 04:47:45,908 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 04:47:45,908 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 04:47:45,908 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-14 04:47:45,909 INFO L153 SettingsManager]: * Command for external solver=cvc5 --incremental --print-success --lang smt [2024-10-14 04:47:45,909 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 04:47:45,909 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 04:47:45,909 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 04:47:45,910 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 04:47:45,910 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-14 04:47:45,910 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5365e3b9adf0a1dadb935cfdb4266af37826f3120fbeff3f7ce577b21fb856a6 [2024-10-14 04:47:46,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 04:47:46,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 04:47:46,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 04:47:46,282 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 04:47:46,282 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 04:47:46,284 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_2_7.i [2024-10-14 04:47:47,795 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 04:47:48,015 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 04:47:48,016 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_2_7.i [2024-10-14 04:47:48,024 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd3bc4e0f/3b5358a1427e43ec83e6ab23529b1f14/FLAG5fa5bcaac [2024-10-14 04:47:48,035 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd3bc4e0f/3b5358a1427e43ec83e6ab23529b1f14 [2024-10-14 04:47:48,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 04:47:48,038 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 04:47:48,040 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 04:47:48,040 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 04:47:48,046 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 04:47:48,047 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:47:48" (1/1) ... [2024-10-14 04:47:48,048 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36499607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:48, skipping insertion in model container [2024-10-14 04:47:48,048 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:47:48" (1/1) ... [2024-10-14 04:47:48,068 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 04:47:48,242 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_2_7.i[1224,1237] [2024-10-14 04:47:48,284 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_2_7.i[2827,2840] [2024-10-14 04:47:48,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 04:47:48,308 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 04:47:48,321 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_2_7.i[1224,1237] [2024-10-14 04:47:48,330 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_4+newton_2_7.i[2827,2840] [2024-10-14 04:47:48,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 04:47:48,355 INFO L204 MainTranslator]: Completed translation [2024-10-14 04:47:48,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:48 WrapperNode [2024-10-14 04:47:48,355 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 04:47:48,356 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 04:47:48,356 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 04:47:48,356 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 04:47:48,363 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:48" (1/1) ... [2024-10-14 04:47:48,372 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:48" (1/1) ... [2024-10-14 04:47:48,396 INFO L138 Inliner]: procedures = 28, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 76 [2024-10-14 04:47:48,396 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 04:47:48,398 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 04:47:48,399 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 04:47:48,399 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 04:47:48,408 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:48" (1/1) ... [2024-10-14 04:47:48,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:48" (1/1) ... [2024-10-14 04:47:48,411 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:48" (1/1) ... [2024-10-14 04:47:48,422 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-10-14 04:47:48,423 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:48" (1/1) ... [2024-10-14 04:47:48,423 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:48" (1/1) ... [2024-10-14 04:47:48,430 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:48" (1/1) ... [2024-10-14 04:47:48,433 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:48" (1/1) ... [2024-10-14 04:47:48,435 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:48" (1/1) ... [2024-10-14 04:47:48,436 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:48" (1/1) ... [2024-10-14 04:47:48,442 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 04:47:48,443 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 04:47:48,443 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 04:47:48,444 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 04:47:48,444 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:48" (1/1) ... [2024-10-14 04:47:48,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 04:47:48,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 04:47:48,474 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) [2024-10-14 04:47:48,476 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 [2024-10-14 04:47:48,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 04:47:48,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-14 04:47:48,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-14 04:47:48,511 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-10-14 04:47:48,511 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-10-14 04:47:48,511 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-10-14 04:47:48,511 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-10-14 04:47:48,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 04:47:48,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 04:47:48,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-14 04:47:48,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-14 04:47:48,608 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 04:47:48,611 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 04:48:01,874 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-10-14 04:48:01,874 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 04:48:01,908 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 04:48:01,908 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 04:48:01,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:48:01 BoogieIcfgContainer [2024-10-14 04:48:01,909 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 04:48:01,911 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 04:48:01,911 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 04:48:01,914 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 04:48:01,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:47:48" (1/3) ... [2024-10-14 04:48:01,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad883eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:48:01, skipping insertion in model container [2024-10-14 04:48:01,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:48" (2/3) ... [2024-10-14 04:48:01,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad883eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:48:01, skipping insertion in model container [2024-10-14 04:48:01,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:48:01" (3/3) ... [2024-10-14 04:48:01,917 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_2_7.i [2024-10-14 04:48:01,933 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 04:48:01,934 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-14 04:48:01,982 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 04:48:01,988 INFO L333 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, 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;@6a684bd0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 04:48:01,989 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-14 04:48:01,993 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 24 states have (on average 1.5) internal successors, (36), 26 states have internal predecessors, (36), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-14 04:48:02,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-14 04:48:02,000 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:48:02,001 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:48:02,002 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:48:02,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:48:02,008 INFO L85 PathProgramCache]: Analyzing trace with hash 531794030, now seen corresponding path program 1 times [2024-10-14 04:48:02,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 04:48:02,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400288759] [2024-10-14 04:48:02,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:48:02,021 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 04:48:02,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 04:48:02,023 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 04:48:02,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-14 04:48:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:48:02,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 04:48:02,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 04:48:02,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:48:02,241 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 04:48:02,241 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 04:48:02,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400288759] [2024-10-14 04:48:02,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [400288759] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:48:02,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:48:02,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 04:48:02,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220261193] [2024-10-14 04:48:02,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:48:02,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:48:02,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 04:48:02,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:48:02,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 04:48:02,274 INFO L87 Difference]: Start difference. First operand has 37 states, 24 states have (on average 1.5) internal successors, (36), 26 states have internal predecessors, (36), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:48:06,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 04:48:10,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 04:48:15,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 04:48:19,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 04:48:19,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:48:19,201 INFO L93 Difference]: Finished difference Result 73 states and 102 transitions. [2024-10-14 04:48:19,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:48:19,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-10-14 04:48:19,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:48:19,209 INFO L225 Difference]: With dead ends: 73 [2024-10-14 04:48:19,209 INFO L226 Difference]: Without dead ends: 36 [2024-10-14 04:48:19,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 04:48:19,214 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 7 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2024-10-14 04:48:19,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 62 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 4 Unknown, 0 Unchecked, 16.9s Time] [2024-10-14 04:48:19,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-10-14 04:48:19,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2024-10-14 04:48:19,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 23 states have internal predecessors, (26), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-14 04:48:19,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2024-10-14 04:48:19,245 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 10 [2024-10-14 04:48:19,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:48:19,246 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2024-10-14 04:48:19,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:48:19,246 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2024-10-14 04:48:19,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-14 04:48:19,247 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:48:19,247 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:48:19,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-14 04:48:19,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 04:48:19,449 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:48:19,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:48:19,450 INFO L85 PathProgramCache]: Analyzing trace with hash 2010454398, now seen corresponding path program 1 times [2024-10-14 04:48:19,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 04:48:19,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488272905] [2024-10-14 04:48:19,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:48:19,450 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 04:48:19,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 04:48:19,454 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 04:48:19,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-14 04:48:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:48:19,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 04:48:19,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 04:48:19,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:48:19,643 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 04:48:19,643 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 04:48:19,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488272905] [2024-10-14 04:48:19,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488272905] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:48:19,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:48:19,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 04:48:19,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148585814] [2024-10-14 04:48:19,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:48:19,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:48:19,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 04:48:19,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:48:19,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 04:48:19,648 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:48:23,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 04:48:27,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 04:48:32,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 04:48:36,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 04:48:36,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:48:36,406 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2024-10-14 04:48:36,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:48:36,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-10-14 04:48:36,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:48:36,409 INFO L225 Difference]: With dead ends: 49 [2024-10-14 04:48:36,409 INFO L226 Difference]: Without dead ends: 35 [2024-10-14 04:48:36,410 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 04:48:36,411 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2024-10-14 04:48:36,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 57 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 4 Unknown, 0 Unchecked, 16.7s Time] [2024-10-14 04:48:36,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-10-14 04:48:36,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-10-14 04:48:36,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 25 states have internal predecessors, (28), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-14 04:48:36,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2024-10-14 04:48:36,418 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 12 [2024-10-14 04:48:36,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:48:36,418 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2024-10-14 04:48:36,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:48:36,418 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2024-10-14 04:48:36,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-14 04:48:36,419 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:48:36,419 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:48:36,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-14 04:48:36,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 04:48:36,620 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:48:36,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:48:36,622 INFO L85 PathProgramCache]: Analyzing trace with hash -466694725, now seen corresponding path program 1 times [2024-10-14 04:48:36,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 04:48:36,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107298758] [2024-10-14 04:48:36,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:48:36,630 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 04:48:36,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 04:48:36,634 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 04:48:36,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-14 04:48:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:48:36,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 04:48:36,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 04:48:37,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:48:37,092 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 04:48:37,093 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 04:48:37,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107298758] [2024-10-14 04:48:37,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1107298758] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 04:48:37,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 04:48:37,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 04:48:37,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671427515] [2024-10-14 04:48:37,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 04:48:37,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 04:48:37,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 04:48:37,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 04:48:37,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 04:48:37,095 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:48:41,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 04:48:45,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 04:48:49,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 04:48:51,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 04:48:51,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:48:51,650 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2024-10-14 04:48:51,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 04:48:51,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-10-14 04:48:51,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:48:51,652 INFO L225 Difference]: With dead ends: 50 [2024-10-14 04:48:51,652 INFO L226 Difference]: Without dead ends: 37 [2024-10-14 04:48:51,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 04:48:51,656 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2024-10-14 04:48:51,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 3 Unknown, 0 Unchecked, 14.5s Time] [2024-10-14 04:48:51,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-10-14 04:48:51,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-10-14 04:48:51,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 25 states have (on average 1.2) internal successors, (30), 27 states have internal predecessors, (30), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-14 04:48:51,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2024-10-14 04:48:51,664 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 14 [2024-10-14 04:48:51,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:48:51,664 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2024-10-14 04:48:51,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:48:51,665 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2024-10-14 04:48:51,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-14 04:48:51,665 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:48:51,665 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:48:51,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-14 04:48:51,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 04:48:51,870 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:48:51,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:48:51,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1903157512, now seen corresponding path program 1 times [2024-10-14 04:48:51,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 04:48:51,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [784935403] [2024-10-14 04:48:51,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:48:51,871 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 04:48:51,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 04:48:51,872 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 04:48:51,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-14 04:48:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 04:48:51,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 04:48:51,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 04:48:52,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:48:52,534 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 04:48:52,920 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 04:48:52,920 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 04:48:52,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [784935403] [2024-10-14 04:48:52,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [784935403] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 04:48:52,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 04:48:52,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-10-14 04:48:52,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576272059] [2024-10-14 04:48:52,921 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 04:48:52,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 04:48:52,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 04:48:52,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 04:48:52,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-14 04:48:52,923 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:48:57,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.23s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 04:49:00,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.58s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 04:49:05,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 04:49:09,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 04:49:13,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 04:49:17,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 04:49:19,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 04:49:19,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 04:49:19,618 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2024-10-14 04:49:19,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 04:49:19,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-10-14 04:49:19,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 04:49:19,620 INFO L225 Difference]: With dead ends: 54 [2024-10-14 04:49:19,620 INFO L226 Difference]: Without dead ends: 41 [2024-10-14 04:49:19,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-14 04:49:19,621 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.7s IncrementalHoareTripleChecker+Time [2024-10-14 04:49:19,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 5 Unknown, 0 Unchecked, 26.7s Time] [2024-10-14 04:49:19,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-10-14 04:49:19,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-10-14 04:49:19,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 31 states have internal predecessors, (34), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-14 04:49:19,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2024-10-14 04:49:19,629 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 16 [2024-10-14 04:49:19,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 04:49:19,629 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2024-10-14 04:49:19,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 04:49:19,630 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2024-10-14 04:49:19,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-14 04:49:19,631 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 04:49:19,631 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 04:49:19,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-10-14 04:49:19,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 04:49:19,832 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 04:49:19,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 04:49:19,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1416757394, now seen corresponding path program 1 times [2024-10-14 04:49:19,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 04:49:19,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097320831] [2024-10-14 04:49:19,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 04:49:19,833 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 04:49:19,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 04:49:19,834 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 04:49:19,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process