/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 02:14:50,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 02:14:50,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 02:14:50,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 02:14:50,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 02:14:50,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 02:14:50,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 02:14:50,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 02:14:50,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 02:14:50,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 02:14:50,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 02:14:50,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 02:14:50,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 02:14:50,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 02:14:50,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 02:14:50,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 02:14:50,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 02:14:50,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 02:14:50,571 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 02:14:50,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 02:14:50,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 02:14:50,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 02:14:50,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 02:14:50,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 02:14:50,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 02:14:50,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 02:14:50,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 02:14:50,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 02:14:50,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 02:14:50,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 02:14:50,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 02:14:50,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 02:14:50,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 02:14:50,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 02:14:50,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 02:14:50,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 02:14:50,596 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 02:14:50,624 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 02:14:50,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 02:14:50,625 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 02:14:50,625 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 02:14:50,626 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 02:14:50,626 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 02:14:50,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 02:14:50,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 02:14:50,628 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 02:14:50,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 02:14:50,628 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 02:14:50,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 02:14:50,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 02:14:50,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 02:14:50,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 02:14:50,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 02:14:50,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 02:14:50,629 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 02:14:50,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 02:14:50,629 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 02:14:50,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 02:14:50,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 02:14:50,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 02:14:50,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 02:14:50,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 02:14:50,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 02:14:50,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 02:14:50,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 02:14:50,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 02:14:50,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 02:14:50,631 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 02:14:50,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 02:14:50,631 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 02:14:50,631 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 02:14:50,632 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 02:14:50,632 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 02:14:50,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 02:14:50,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 02:14:50,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 02:14:50,878 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 02:14:50,878 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 02:14:50,879 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound1.c [2023-04-02 02:14:51,991 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 02:14:52,180 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 02:14:52,181 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound1.c [2023-04-02 02:14:52,186 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ce698be3/dfd2ace594a7401597537da6ce86b690/FLAGe10aba340 [2023-04-02 02:14:52,201 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ce698be3/dfd2ace594a7401597537da6ce86b690 [2023-04-02 02:14:52,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 02:14:52,205 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 02:14:52,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 02:14:52,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 02:14:52,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 02:14:52,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 02:14:52" (1/1) ... [2023-04-02 02:14:52,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a003b9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:14:52, skipping insertion in model container [2023-04-02 02:14:52,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 02:14:52" (1/1) ... [2023-04-02 02:14:52,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 02:14:52,237 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 02:14:52,362 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound1.c[524,537] [2023-04-02 02:14:52,389 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 02:14:52,399 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 02:14:52,408 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound1.c[524,537] [2023-04-02 02:14:52,414 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 02:14:52,424 INFO L208 MainTranslator]: Completed translation [2023-04-02 02:14:52,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:14:52 WrapperNode [2023-04-02 02:14:52,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 02:14:52,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 02:14:52,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 02:14:52,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 02:14:52,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:14:52" (1/1) ... [2023-04-02 02:14:52,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:14:52" (1/1) ... [2023-04-02 02:14:52,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:14:52" (1/1) ... [2023-04-02 02:14:52,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:14:52" (1/1) ... [2023-04-02 02:14:52,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:14:52" (1/1) ... [2023-04-02 02:14:52,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:14:52" (1/1) ... [2023-04-02 02:14:52,444 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:14:52" (1/1) ... [2023-04-02 02:14:52,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:14:52" (1/1) ... [2023-04-02 02:14:52,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 02:14:52,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 02:14:52,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 02:14:52,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 02:14:52,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:14:52" (1/1) ... [2023-04-02 02:14:52,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 02:14:52,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:14:52,475 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 02:14:52,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 02:14:52,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 02:14:52,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 02:14:52,512 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 02:14:52,512 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 02:14:52,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 02:14:52,512 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 02:14:52,513 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 02:14:52,513 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 02:14:52,513 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 02:14:52,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 02:14:52,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 02:14:52,514 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 02:14:52,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 02:14:52,514 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 02:14:52,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 02:14:52,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 02:14:52,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 02:14:52,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 02:14:52,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 02:14:52,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 02:14:52,562 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 02:14:52,563 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 02:14:52,692 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 02:14:52,699 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 02:14:52,699 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 02:14:52,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 02:14:52 BoogieIcfgContainer [2023-04-02 02:14:52,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 02:14:52,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 02:14:52,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 02:14:52,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 02:14:52,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 02:14:52" (1/3) ... [2023-04-02 02:14:52,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc6fb32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 02:14:52, skipping insertion in model container [2023-04-02 02:14:52,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:14:52" (2/3) ... [2023-04-02 02:14:52,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc6fb32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 02:14:52, skipping insertion in model container [2023-04-02 02:14:52,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 02:14:52" (3/3) ... [2023-04-02 02:14:52,719 INFO L112 eAbstractionObserver]: Analyzing ICFG fermat2-ll_valuebound1.c [2023-04-02 02:14:52,746 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 02:14:52,747 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 02:14:52,798 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 02:14:52,804 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@2814277f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 02:14:52,804 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 02:14:52,808 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-02 02:14:52,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-04-02 02:14:52,814 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:14:52,815 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:14:52,815 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:14:52,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:14:52,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1775434677, now seen corresponding path program 1 times [2023-04-02 02:14:52,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:14:52,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264113731] [2023-04-02 02:14:52,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:14:52,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:14:52,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:14:52,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:14:52,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264113731] [2023-04-02 02:14:52,935 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-04-02 02:14:52,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130769968] [2023-04-02 02:14:52,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:14:52,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:14:52,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:14:52,940 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 02:14:52,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 02:14:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:14:53,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 1 conjunts are in the unsatisfiable core [2023-04-02 02:14:53,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:14:53,076 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-02 02:14:53,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 02:14:53,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130769968] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:14:53,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 02:14:53,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-02 02:14:53,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408149790] [2023-04-02 02:14:53,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:14:53,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-02 02:14:53,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:14:53,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-02 02:14:53,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 02:14:53,115 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-04-02 02:14:53,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:14:53,142 INFO L93 Difference]: Finished difference Result 57 states and 80 transitions. [2023-04-02 02:14:53,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-02 02:14:53,145 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2023-04-02 02:14:53,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:14:53,151 INFO L225 Difference]: With dead ends: 57 [2023-04-02 02:14:53,151 INFO L226 Difference]: Without dead ends: 27 [2023-04-02 02:14:53,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 02:14:53,160 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 02:14:53,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 02:14:53,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-04-02 02:14:53,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-04-02 02:14:53,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-02 02:14:53,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2023-04-02 02:14:53,204 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 33 [2023-04-02 02:14:53,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:14:53,205 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2023-04-02 02:14:53,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-04-02 02:14:53,206 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2023-04-02 02:14:53,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-04-02 02:14:53,207 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:14:53,208 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:14:53,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 02:14:53,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-04-02 02:14:53,414 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:14:53,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:14:53,416 INFO L85 PathProgramCache]: Analyzing trace with hash -102231875, now seen corresponding path program 1 times [2023-04-02 02:14:53,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:14:53,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243259766] [2023-04-02 02:14:53,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:14:53,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:14:53,450 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:14:53,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1874359439] [2023-04-02 02:14:53,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:14:53,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:14:53,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:14:53,461 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 02:14:53,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 02:14:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:14:53,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 29 conjunts are in the unsatisfiable core [2023-04-02 02:14:53,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:14:53,933 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 02:14:53,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 02:14:54,062 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 02:14:54,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:14:54,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243259766] [2023-04-02 02:14:54,062 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:14:54,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874359439] [2023-04-02 02:14:54,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874359439] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-02 02:14:54,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 02:14:54,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-04-02 02:14:54,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687465747] [2023-04-02 02:14:54,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:14:54,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 02:14:54,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:14:54,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 02:14:54,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-04-02 02:14:54,065 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-02 02:14:54,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:14:54,180 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2023-04-02 02:14:54,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 02:14:54,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33 [2023-04-02 02:14:54,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:14:54,181 INFO L225 Difference]: With dead ends: 33 [2023-04-02 02:14:54,181 INFO L226 Difference]: Without dead ends: 29 [2023-04-02 02:14:54,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-04-02 02:14:54,183 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 8 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 02:14:54,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 87 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 02:14:54,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-04-02 02:14:54,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-04-02 02:14:54,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 8 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-02 02:14:54,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2023-04-02 02:14:54,194 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 33 [2023-04-02 02:14:54,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:14:54,195 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2023-04-02 02:14:54,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-02 02:14:54,196 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2023-04-02 02:14:54,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-04-02 02:14:54,197 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:14:54,197 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:14:54,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 02:14:54,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-04-02 02:14:54,403 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:14:54,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:14:54,404 INFO L85 PathProgramCache]: Analyzing trace with hash -453872510, now seen corresponding path program 1 times [2023-04-02 02:14:54,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:14:54,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236260464] [2023-04-02 02:14:54,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:14:54,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:14:54,419 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 02:14:54,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1964804684] [2023-04-02 02:14:54,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:14:54,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:14:54,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:14:54,423 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 02:14:54,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 02:14:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:14:54,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 13 conjunts are in the unsatisfiable core [2023-04-02 02:14:54,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:14:54,558 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 02:14:54,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 02:14:54,659 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 02:14:54,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:14:54,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236260464] [2023-04-02 02:14:54,660 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 02:14:54,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964804684] [2023-04-02 02:14:54,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964804684] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 02:14:54,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 02:14:54,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2023-04-02 02:14:54,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936164425] [2023-04-02 02:14:54,661 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 02:14:54,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 02:14:54,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:14:54,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 02:14:54,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-04-02 02:14:54,665 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2023-04-02 02:14:54,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:14:54,752 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2023-04-02 02:14:54,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 02:14:54,753 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 39 [2023-04-02 02:14:54,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:14:54,753 INFO L225 Difference]: With dead ends: 29 [2023-04-02 02:14:54,753 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 02:14:54,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-04-02 02:14:54,756 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 13 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 02:14:54,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 134 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 02:14:54,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 02:14:54,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 02:14:54,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-02 02:14:54,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 02:14:54,759 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2023-04-02 02:14:54,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:14:54,759 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 02:14:54,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2023-04-02 02:14:54,760 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 02:14:54,760 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 02:14:54,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 02:14:54,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 02:14:54,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:14:54,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 02:14:54,996 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 5) no Hoare annotation was computed. [2023-04-02 02:14:54,996 INFO L899 garLoopResultBuilder]: For program point reach_errorFINAL(line 5) no Hoare annotation was computed. [2023-04-02 02:14:54,996 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 5) no Hoare annotation was computed. [2023-04-02 02:14:54,999 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 8 10) the Hoare annotation is: true [2023-04-02 02:14:55,000 INFO L899 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2023-04-02 02:14:55,000 INFO L899 garLoopResultBuilder]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2023-04-02 02:14:55,000 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2023-04-02 02:14:55,001 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 46) the Hoare annotation is: (let ((.cse0 (+ (* main_~v~0 2) (* main_~u~0 main_~u~0))) (.cse1 (* main_~v~0 main_~v~0)) (.cse2 (* main_~u~0 2)) (.cse3 (* main_~A~0 4))) (and (= .cse0 (+ .cse1 .cse2 .cse3 (* main_~r~0 4))) (= .cse0 (+ .cse1 .cse2 .cse3)))) [2023-04-02 02:14:55,001 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2023-04-02 02:14:55,001 INFO L902 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true [2023-04-02 02:14:55,001 INFO L902 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2023-04-02 02:14:55,001 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 19 51) no Hoare annotation was computed. [2023-04-02 02:14:55,002 INFO L902 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: true [2023-04-02 02:14:55,002 INFO L902 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2023-04-02 02:14:55,002 INFO L899 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2023-04-02 02:14:55,002 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 19 51) no Hoare annotation was computed. [2023-04-02 02:14:55,002 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 19 51) the Hoare annotation is: true [2023-04-02 02:14:55,002 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4) (* main_~r~0 4))) [2023-04-02 02:14:55,003 INFO L899 garLoopResultBuilder]: For program point L36-1(lines 35 46) no Hoare annotation was computed. [2023-04-02 02:14:55,003 INFO L899 garLoopResultBuilder]: For program point L49(line 49) no Hoare annotation was computed. [2023-04-02 02:14:55,003 INFO L899 garLoopResultBuilder]: For program point L39(lines 39 45) no Hoare annotation was computed. [2023-04-02 02:14:55,003 INFO L895 garLoopResultBuilder]: At program point L39-2(lines 35 46) the Hoare annotation is: (= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4) (* main_~r~0 4))) [2023-04-02 02:14:55,003 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2023-04-02 02:14:55,003 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 02:14:55,003 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 02:14:55,004 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 02:14:55,004 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-02 02:14:55,004 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 02:14:55,004 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 02:14:55,004 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2023-04-02 02:14:55,004 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2023-04-02 02:14:55,004 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2023-04-02 02:14:55,004 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2023-04-02 02:14:55,005 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 17) the Hoare annotation is: true [2023-04-02 02:14:55,005 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2023-04-02 02:14:55,008 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-04-02 02:14:55,010 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 02:14:55,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 02:14:55 BoogieIcfgContainer [2023-04-02 02:14:55,022 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 02:14:55,023 INFO L158 Benchmark]: Toolchain (without parser) took 2817.40ms. Allocated memory is still 255.9MB. Free memory was 212.3MB in the beginning and 145.1MB in the end (delta: 67.2MB). Peak memory consumption was 68.2MB. Max. memory is 8.0GB. [2023-04-02 02:14:55,024 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 178.3MB. Free memory is still 125.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 02:14:55,024 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.06ms. Allocated memory is still 255.9MB. Free memory was 211.8MB in the beginning and 201.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 02:14:55,024 INFO L158 Benchmark]: Boogie Preprocessor took 20.84ms. Allocated memory is still 255.9MB. Free memory was 201.3MB in the beginning and 200.2MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-02 02:14:55,025 INFO L158 Benchmark]: RCFGBuilder took 253.78ms. Allocated memory is still 255.9MB. Free memory was 200.1MB in the beginning and 188.7MB in the end (delta: 11.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-04-02 02:14:55,025 INFO L158 Benchmark]: TraceAbstraction took 2308.52ms. Allocated memory is still 255.9MB. Free memory was 187.7MB in the beginning and 145.1MB in the end (delta: 42.6MB). Peak memory consumption was 44.0MB. Max. memory is 8.0GB. [2023-04-02 02:14:55,026 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 178.3MB. Free memory is still 125.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 217.06ms. Allocated memory is still 255.9MB. Free memory was 211.8MB in the beginning and 201.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.84ms. Allocated memory is still 255.9MB. Free memory was 201.3MB in the beginning and 200.2MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 253.78ms. Allocated memory is still 255.9MB. Free memory was 200.1MB in the beginning and 188.7MB in the end (delta: 11.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 2308.52ms. Allocated memory is still 255.9MB. Free memory was 187.7MB in the beginning and 145.1MB in the end (delta: 42.6MB). Peak memory consumption was 44.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 258 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 173 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 83 IncrementalHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 85 mSDtfsCounter, 83 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 177 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 22 PreInvPairs, 28 NumberOfFragments, 92 HoareAnnotationTreeSize, 22 FomulaSimplifications, 5 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 172 ConstructedInterpolants, 0 QuantifiedInterpolants, 525 SizeOfPredicates, 8 NumberOfNonLiveVariables, 308 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 113/124 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: v * 2 + u * u == v * v + u * 2 + A * 4 + r * 4 RESULT: Ultimate proved your program to be correct! [2023-04-02 02:14:55,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...