/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/loop-simple/nested_3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-15 04:04:37,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 04:04:37,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 04:04:37,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 04:04:37,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-15 04:04:37,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-15 04:04:37,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-15 04:04:37,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-15 04:04:37,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-15 04:04:37,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-15 04:04:37,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-15 04:04:37,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-15 04:04:37,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-15 04:04:37,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-15 04:04:37,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-15 04:04:37,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-15 04:04:37,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-15 04:04:37,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 04:04:37,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 04:04:37,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 04:04:37,608 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-15 04:04:37,615 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 04:04:37,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 04:04:37,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 04:04:37,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 04:04:37,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 04:04:37,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 04:04:37,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 04:04:37,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 04:04:37,616 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 04:04:37,616 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 04:04:37,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 04:04:37,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 04:04:37,617 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 04:04:37,617 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 04:04:37,617 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 04:04:37,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 04:04:37,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 04:04:37,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-15 04:04:37,617 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 04:04:37,617 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-15 04:04:37,617 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 04:04:37,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 04:04:37,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 04:04:37,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 04:04:37,803 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 04:04:37,805 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 04:04:37,806 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-simple/nested_3.c [2022-02-15 04:04:37,852 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/222205f3b/f8177f3b742c4f00bddd06431a4b44b5/FLAG5414ce0bf [2022-02-15 04:04:38,238 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 04:04:38,238 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/nested_3.c [2022-02-15 04:04:38,253 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/222205f3b/f8177f3b742c4f00bddd06431a4b44b5/FLAG5414ce0bf [2022-02-15 04:04:38,264 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/222205f3b/f8177f3b742c4f00bddd06431a4b44b5 [2022-02-15 04:04:38,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 04:04:38,268 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 04:04:38,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 04:04:38,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 04:04:38,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 04:04:38,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 04:04:38" (1/1) ... [2022-02-15 04:04:38,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@748f4f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:04:38, skipping insertion in model container [2022-02-15 04:04:38,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 04:04:38" (1/1) ... [2022-02-15 04:04:38,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 04:04:38,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 04:04:38,440 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/nested_3.c[784,797] [2022-02-15 04:04:38,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 04:04:38,450 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 04:04:38,460 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/nested_3.c[784,797] [2022-02-15 04:04:38,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 04:04:38,469 INFO L208 MainTranslator]: Completed translation [2022-02-15 04:04:38,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:04:38 WrapperNode [2022-02-15 04:04:38,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 04:04:38,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 04:04:38,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 04:04:38,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 04:04:38,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:04:38" (1/1) ... [2022-02-15 04:04:38,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:04:38" (1/1) ... [2022-02-15 04:04:38,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:04:38" (1/1) ... [2022-02-15 04:04:38,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:04:38" (1/1) ... [2022-02-15 04:04:38,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:04:38" (1/1) ... [2022-02-15 04:04:38,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:04:38" (1/1) ... [2022-02-15 04:04:38,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:04:38" (1/1) ... [2022-02-15 04:04:38,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 04:04:38,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 04:04:38,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 04:04:38,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 04:04:38,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:04:38" (1/1) ... [2022-02-15 04:04:38,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 04:04:38,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 04:04:38,553 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) [2022-02-15 04:04:38,585 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 [2022-02-15 04:04:38,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 04:04:38,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 04:04:38,596 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 04:04:38,597 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 04:04:38,597 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 04:04:38,597 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 04:04:38,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 04:04:38,597 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 04:04:38,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 04:04:38,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 04:04:38,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 04:04:38,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 04:04:38,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 04:04:38,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 04:04:38,646 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 04:04:38,647 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 04:04:38,741 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 04:04:38,745 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 04:04:38,745 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-02-15 04:04:38,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 04:04:38 BoogieIcfgContainer [2022-02-15 04:04:38,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 04:04:38,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 04:04:38,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 04:04:38,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 04:04:38,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 04:04:38" (1/3) ... [2022-02-15 04:04:38,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395bfcac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 04:04:38, skipping insertion in model container [2022-02-15 04:04:38,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:04:38" (2/3) ... [2022-02-15 04:04:38,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395bfcac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 04:04:38, skipping insertion in model container [2022-02-15 04:04:38,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 04:04:38" (3/3) ... [2022-02-15 04:04:38,753 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_3.c [2022-02-15 04:04:38,757 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-15 04:04:38,757 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 04:04:38,784 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 04:04:38,789 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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, mLoopAccelerationTechnique=QVASR [2022-02-15 04:04:38,789 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 04:04:38,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 04:04:38,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-15 04:04:38,803 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:04:38,803 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:04:38,804 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:04:38,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:04:38,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1607939523, now seen corresponding path program 1 times [2022-02-15 04:04:38,812 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:04:38,813 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977427112] [2022-02-15 04:04:38,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:04:38,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:04:38,854 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:04:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:04:38,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:04:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:04:38,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:04:38,980 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:04:38,980 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977427112] [2022-02-15 04:04:38,981 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [977427112] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:04:38,981 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:04:38,982 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-15 04:04:38,982 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599914173] [2022-02-15 04:04:38,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:04:38,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-15 04:04:38,986 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:04:39,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-15 04:04:39,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 04:04:39,030 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:04:39,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:04:39,062 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2022-02-15 04:04:39,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-15 04:04:39,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2022-02-15 04:04:39,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:04:39,071 INFO L225 Difference]: With dead ends: 34 [2022-02-15 04:04:39,071 INFO L226 Difference]: Without dead ends: 15 [2022-02-15 04:04:39,073 INFO L932 BasicCegarLoop]: 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 [2022-02-15 04:04:39,079 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:04:39,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 25 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:04:39,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-02-15 04:04:39,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-02-15 04:04:39,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:04:39,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-02-15 04:04:39,105 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2022-02-15 04:04:39,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:04:39,105 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-02-15 04:04:39,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:04:39,106 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-02-15 04:04:39,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-15 04:04:39,107 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:04:39,107 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:04:39,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 04:04:39,108 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:04:39,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:04:39,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1607968353, now seen corresponding path program 1 times [2022-02-15 04:04:39,109 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:04:39,109 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354594940] [2022-02-15 04:04:39,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:04:39,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:04:39,115 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:04:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:04:39,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:04:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:04:39,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:04:39,190 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:04:39,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354594940] [2022-02-15 04:04:39,191 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1354594940] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:04:39,191 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:04:39,191 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 04:04:39,191 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051543692] [2022-02-15 04:04:39,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:04:39,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 04:04:39,192 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:04:39,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 04:04:39,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 04:04:39,194 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:04:39,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:04:39,229 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2022-02-15 04:04:39,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 04:04:39,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2022-02-15 04:04:39,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:04:39,231 INFO L225 Difference]: With dead ends: 24 [2022-02-15 04:04:39,231 INFO L226 Difference]: Without dead ends: 21 [2022-02-15 04:04:39,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 04:04:39,235 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 26 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:04:39,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 22 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:04:39,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-02-15 04:04:39,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2022-02-15 04:04:39,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:04:39,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-02-15 04:04:39,244 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 9 [2022-02-15 04:04:39,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:04:39,245 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-02-15 04:04:39,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:04:39,246 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-02-15 04:04:39,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-15 04:04:39,247 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:04:39,247 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:04:39,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 04:04:39,247 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:04:39,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:04:39,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1181899718, now seen corresponding path program 1 times [2022-02-15 04:04:39,248 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:04:39,248 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392740565] [2022-02-15 04:04:39,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:04:39,334 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 04:04:39,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:04:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-15 04:04:39,341 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-15 04:04:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-15 04:04:39,356 INFO L138 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-15 04:04:39,356 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-15 04:04:39,358 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-15 04:04:39,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 04:04:39,362 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-15 04:04:39,363 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-15 04:04:39,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 04:04:39 BoogieIcfgContainer [2022-02-15 04:04:39,369 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-15 04:04:39,370 INFO L158 Benchmark]: Toolchain (without parser) took 1102.32ms. Allocated memory is still 201.3MB. Free memory was 148.3MB in the beginning and 126.3MB in the end (delta: 22.0MB). Peak memory consumption was 22.2MB. Max. memory is 8.0GB. [2022-02-15 04:04:39,370 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 201.3MB. Free memory is still 164.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 04:04:39,370 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.49ms. Allocated memory is still 201.3MB. Free memory was 148.1MB in the beginning and 174.5MB in the end (delta: -26.4MB). Peak memory consumption was 9.6MB. Max. memory is 8.0GB. [2022-02-15 04:04:39,371 INFO L158 Benchmark]: Boogie Preprocessor took 25.88ms. Allocated memory is still 201.3MB. Free memory was 174.5MB in the beginning and 172.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-15 04:04:39,371 INFO L158 Benchmark]: RCFGBuilder took 250.08ms. Allocated memory is still 201.3MB. Free memory was 172.9MB in the beginning and 163.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-15 04:04:39,371 INFO L158 Benchmark]: TraceAbstraction took 621.86ms. Allocated memory is still 201.3MB. Free memory was 162.5MB in the beginning and 126.3MB in the end (delta: 36.2MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2022-02-15 04:04:39,373 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 201.3MB. Free memory is still 164.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 200.49ms. Allocated memory is still 201.3MB. Free memory was 148.1MB in the beginning and 174.5MB in the end (delta: -26.4MB). Peak memory consumption was 9.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.88ms. Allocated memory is still 201.3MB. Free memory was 174.5MB in the beginning and 172.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 250.08ms. Allocated memory is still 201.3MB. Free memory was 172.9MB in the beginning and 163.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 621.86ms. Allocated memory is still 201.3MB. Free memory was 162.5MB in the beginning and 126.3MB in the end (delta: 36.2MB). Peak memory consumption was 36.7MB. 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 - CounterExampleResult [Line: 29]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] int a = 6; [L17] int b = 6; [L18] int c = 6; [L21] a = 0 [L21] COND TRUE a < 6 [L22] b = 0 [L22] COND FALSE !(b < 6) [L21] ++a [L21] COND FALSE !(a < 6) [L28] COND TRUE !(a == 6 && b == 6 && c == 6 ) [L29] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 41 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41 mSDsluCounter, 47 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16 IncrementalHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 37 mSDtfsCounter, 16 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 7, 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, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 proved your program to be incorrect! [2022-02-15 04:04:39,417 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...