/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/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/recursive/McCarthy91-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 00:01:04,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 00:01:04,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 00:01:04,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 00:01:04,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 00:01:04,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 00:01:04,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 00:01:04,493 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 00:01:04,537 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 00:01:04,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 00:01:04,538 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 00:01:04,538 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 00:01:04,539 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 00:01:04,539 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 00:01:04,539 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 00:01:04,539 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 00:01:04,539 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 00:01:04,539 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 00:01:04,540 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 00:01:04,540 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 00:01:04,540 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 00:01:04,540 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 00:01:04,541 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 00:01:04,541 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 00:01:04,541 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 00:01:04,541 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 00:01:04,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 00:01:04,541 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 00:01:04,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 00:01:04,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 00:01:04,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 00:01:04,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 00:01:04,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 00:01:04,542 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 00:01:04,542 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 00:01:04,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 00:01:04,542 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 00:01:04,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 00:01:04,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 00:01:04,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 00:01:04,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:01:04,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 00:01:04,553 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 00:01:04,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 00:01:04,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 00:01:04,553 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 00:01:04,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 00:01:04,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 00:01:04,554 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 00:01:04,554 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-04-01 00:01:05,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 00:01:05,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 00:01:05,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 00:01:05,106 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 00:01:05,106 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 00:01:05,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/McCarthy91-2.c [2023-04-01 00:01:07,410 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 00:01:08,210 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 00:01:08,211 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/McCarthy91-2.c [2023-04-01 00:01:08,234 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1842c4d0/765cc90ee3e744d593d0d7f43a733d0f/FLAG959031d48 [2023-04-01 00:01:08,267 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1842c4d0/765cc90ee3e744d593d0d7f43a733d0f [2023-04-01 00:01:08,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 00:01:08,271 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 00:01:08,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 00:01:08,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 00:01:08,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 00:01:08,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:01:08" (1/1) ... [2023-04-01 00:01:08,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d248d36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:01:08, skipping insertion in model container [2023-04-01 00:01:08,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:01:08" (1/1) ... [2023-04-01 00:01:08,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 00:01:08,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 00:01:08,602 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/recursive/McCarthy91-2.c[749,762] [2023-04-01 00:01:08,606 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:01:08,617 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 00:01:08,631 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/recursive/McCarthy91-2.c[749,762] [2023-04-01 00:01:08,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:01:08,653 INFO L208 MainTranslator]: Completed translation [2023-04-01 00:01:08,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:01:08 WrapperNode [2023-04-01 00:01:08,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 00:01:08,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 00:01:08,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 00:01:08,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 00:01:08,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:01:08" (1/1) ... [2023-04-01 00:01:08,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:01:08" (1/1) ... [2023-04-01 00:01:08,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:01:08" (1/1) ... [2023-04-01 00:01:08,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:01:08" (1/1) ... [2023-04-01 00:01:08,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:01:08" (1/1) ... [2023-04-01 00:01:08,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:01:08" (1/1) ... [2023-04-01 00:01:08,685 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:01:08" (1/1) ... [2023-04-01 00:01:08,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:01:08" (1/1) ... [2023-04-01 00:01:08,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 00:01:08,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 00:01:08,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 00:01:08,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 00:01:08,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:01:08" (1/1) ... [2023-04-01 00:01:08,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:01:08,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 00:01:08,738 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) [2023-04-01 00:01:08,762 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 [2023-04-01 00:01:08,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 00:01:08,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 00:01:08,777 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 00:01:08,777 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2023-04-01 00:01:08,778 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 00:01:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 00:01:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 00:01:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 00:01:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 00:01:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 00:01:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2023-04-01 00:01:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 00:01:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 00:01:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 00:01:08,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 00:01:08,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 00:01:08,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 00:01:08,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 00:01:08,857 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 00:01:08,859 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 00:01:09,009 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 00:01:09,032 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 00:01:09,033 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 00:01:09,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:01:09 BoogieIcfgContainer [2023-04-01 00:01:09,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 00:01:09,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 00:01:09,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 00:01:09,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 00:01:09,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:01:08" (1/3) ... [2023-04-01 00:01:09,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1935808b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:01:09, skipping insertion in model container [2023-04-01 00:01:09,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:01:08" (2/3) ... [2023-04-01 00:01:09,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1935808b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:01:09, skipping insertion in model container [2023-04-01 00:01:09,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:01:09" (3/3) ... [2023-04-01 00:01:09,046 INFO L112 eAbstractionObserver]: Analyzing ICFG McCarthy91-2.c [2023-04-01 00:01:09,063 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 00:01:09,063 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 00:01:09,116 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 00:01:09,132 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=FINITE_AUTOMATA, 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;@3f2c6b51, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 00:01:09,133 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 00:01:09,142 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 00:01:09,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-04-01 00:01:09,149 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:01:09,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:01:09,150 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:01:09,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:01:09,158 INFO L85 PathProgramCache]: Analyzing trace with hash -186517796, now seen corresponding path program 1 times [2023-04-01 00:01:09,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:01:09,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064695533] [2023-04-01 00:01:09,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:01:09,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:01:09,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:01:10,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:01:10,015 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:01:10,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064695533] [2023-04-01 00:01:10,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064695533] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:01:10,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:01:10,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 00:01:10,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673601715] [2023-04-01 00:01:10,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:01:10,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 00:01:10,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:01:10,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 00:01:10,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 00:01:10,111 INFO L87 Difference]: Start difference. First operand has 22 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 00:01:10,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:01:10,381 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2023-04-01 00:01:10,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 00:01:10,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2023-04-01 00:01:10,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:01:10,413 INFO L225 Difference]: With dead ends: 34 [2023-04-01 00:01:10,414 INFO L226 Difference]: Without dead ends: 20 [2023-04-01 00:01:10,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:01:10,428 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 00:01:10,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 58 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 00:01:10,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-04-01 00:01:10,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-04-01 00:01:10,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-01 00:01:10,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2023-04-01 00:01:10,540 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 13 [2023-04-01 00:01:10,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:01:10,545 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-04-01 00:01:10,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 00:01:10,545 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-04-01 00:01:10,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-04-01 00:01:10,548 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:01:10,548 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:01:10,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 00:01:10,549 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:01:10,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:01:10,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1585030937, now seen corresponding path program 1 times [2023-04-01 00:01:10,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:01:10,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119782996] [2023-04-01 00:01:10,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:01:10,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:01:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:01:11,097 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 00:01:11,097 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:01:11,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119782996] [2023-04-01 00:01:11,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119782996] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 00:01:11,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302938090] [2023-04-01 00:01:11,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:01:11,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 00:01:11,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 00:01:11,107 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) [2023-04-01 00:01:11,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 00:01:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:01:11,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 19 conjunts are in the unsatisfiable core [2023-04-01 00:01:11,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 00:01:11,561 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 00:01:11,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 00:01:13,059 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 00:01:13,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302938090] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 00:01:13,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [901951419] [2023-04-01 00:01:13,105 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-04-01 00:01:13,105 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 00:01:13,111 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-04-01 00:01:13,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 00:01:13,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 15 [2023-04-01 00:01:13,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493062101] [2023-04-01 00:01:13,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 00:01:13,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 00:01:13,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:01:13,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 00:01:13,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-04-01 00:01:13,168 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 3 states have call successors, (5), 1 states have call predecessors, (5), 6 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 00:01:13,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:01:13,387 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2023-04-01 00:01:13,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 00:01:13,387 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 3 states have call successors, (5), 1 states have call predecessors, (5), 6 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 25 [2023-04-01 00:01:13,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:01:13,388 INFO L225 Difference]: With dead ends: 20 [2023-04-01 00:01:13,388 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 00:01:13,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2023-04-01 00:01:13,391 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:01:13,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 67 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:01:13,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 00:01:13,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 00:01:13,395 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) [2023-04-01 00:01:13,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 00:01:13,395 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2023-04-01 00:01:13,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:01:13,395 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 00:01:13,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 3 states have call successors, (5), 1 states have call predecessors, (5), 6 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 00:01:13,395 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 00:01:13,395 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 00:01:13,400 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 00:01:13,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 00:01:13,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 00:01:13,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-01 00:01:13,766 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2023-04-01 00:01:13,766 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 3) no Hoare annotation was computed. [2023-04-01 00:01:13,767 INFO L899 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2023-04-01 00:01:13,767 INFO L899 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 32) no Hoare annotation was computed. [2023-04-01 00:01:13,767 INFO L899 garLoopResultBuilder]: For program point L29(lines 29 33) no Hoare annotation was computed. [2023-04-01 00:01:13,767 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 26 34) no Hoare annotation was computed. [2023-04-01 00:01:13,767 INFO L902 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: true [2023-04-01 00:01:13,767 INFO L899 garLoopResultBuilder]: For program point L28-1(line 28) no Hoare annotation was computed. [2023-04-01 00:01:13,768 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 26 34) the Hoare annotation is: true [2023-04-01 00:01:13,768 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 26 34) no Hoare annotation was computed. [2023-04-01 00:01:13,768 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 00:01:13,768 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-01 00:01:13,768 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-01 00:01:13,768 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-01 00:01:13,768 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-01 00:01:13,768 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 00:01:13,768 INFO L899 garLoopResultBuilder]: For program point f91FINAL(lines 17 23) no Hoare annotation was computed. [2023-04-01 00:01:13,769 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 17 23) the Hoare annotation is: true [2023-04-01 00:01:13,769 INFO L895 garLoopResultBuilder]: At program point L21(line 21) the Hoare annotation is: (and (<= f91_~x 100) (<= f91_~x |f91_#in~x|) (<= |f91_#in~x| f91_~x)) [2023-04-01 00:01:13,769 INFO L899 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2023-04-01 00:01:13,769 INFO L895 garLoopResultBuilder]: At program point L21-2(line 21) the Hoare annotation is: (and (<= |f91_#t~ret4| 101) (<= f91_~x 100) (<= f91_~x |f91_#in~x|) (<= |f91_#in~x| f91_~x)) [2023-04-01 00:01:13,769 INFO L899 garLoopResultBuilder]: For program point f91EXIT(lines 17 23) no Hoare annotation was computed. [2023-04-01 00:01:13,769 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 22) no Hoare annotation was computed. [2023-04-01 00:01:13,769 INFO L899 garLoopResultBuilder]: For program point L21-3(line 21) no Hoare annotation was computed. [2023-04-01 00:01:13,772 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-04-01 00:01:13,783 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 00:01:13,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 12:01:13 BoogieIcfgContainer [2023-04-01 00:01:13,814 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 00:01:13,832 INFO L158 Benchmark]: Toolchain (without parser) took 5543.73ms. Allocated memory is still 238.0MB. Free memory was 178.7MB in the beginning and 193.2MB in the end (delta: -14.5MB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 00:01:13,836 INFO L158 Benchmark]: CDTParser took 0.98ms. Allocated memory is still 168.8MB. Free memory is still 118.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 00:01:13,837 INFO L158 Benchmark]: CACSL2BoogieTranslator took 379.96ms. Allocated memory is still 238.0MB. Free memory was 178.7MB in the beginning and 168.8MB in the end (delta: 9.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-04-01 00:01:13,839 INFO L158 Benchmark]: Boogie Preprocessor took 34.57ms. Allocated memory is still 238.0MB. Free memory was 168.8MB in the beginning and 167.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-01 00:01:13,839 INFO L158 Benchmark]: RCFGBuilder took 344.99ms. Allocated memory is still 238.0MB. Free memory was 167.4MB in the beginning and 156.6MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-01 00:01:13,840 INFO L158 Benchmark]: TraceAbstraction took 4773.13ms. Allocated memory is still 238.0MB. Free memory was 156.2MB in the beginning and 193.2MB in the end (delta: -37.0MB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 00:01:13,849 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.98ms. Allocated memory is still 168.8MB. Free memory is still 118.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 379.96ms. Allocated memory is still 238.0MB. Free memory was 178.7MB in the beginning and 168.8MB in the end (delta: 9.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.57ms. Allocated memory is still 238.0MB. Free memory was 168.8MB in the beginning and 167.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 344.99ms. Allocated memory is still 238.0MB. Free memory was 167.4MB in the beginning and 156.6MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 4773.13ms. Allocated memory is still 238.0MB. Free memory was 156.2MB in the beginning and 193.2MB in the end (delta: -37.0MB). There was no memory consumed. 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: 32]: 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 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.7s, OverallIterations: 2, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 125 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 99 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 160 IncrementalHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 26 mSDtfsCounter, 160 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 44 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 14 NumberOfFragments, 29 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 350 SizeOfPredicates, 5 NumberOfNonLiveVariables, 89 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 25/36 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 RESULT: Ultimate proved your program to be correct! [2023-04-01 00:01:13,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...