/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 OctagonDomain -i ../sv-benchmarks/c/ldv-regression/just_assert.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 04:49:04,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 04:49:04,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 04:49:04,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 04:49:04,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 04:49:04,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 04:49:04,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 04:49:04,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 04:49:04,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 04:49:04,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 04:49:04,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 04:49:04,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2023-04-01 04:49:04,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 04:49:04,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 04:49:04,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 04:49:04,532 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 04:49:04,566 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 04:49:04,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 04:49:04,567 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 04:49:04,567 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 04:49:04,568 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 04:49:04,568 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 04:49:04,568 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 04:49:04,568 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 04:49:04,568 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 04:49:04,568 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 04:49:04,569 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 04:49:04,569 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 04:49:04,569 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 04:49:04,569 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 04:49:04,569 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 04:49:04,569 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 04:49:04,569 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 04:49:04,569 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 04:49:04,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 04:49:04,570 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 04:49:04,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 04:49:04,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 04:49:04,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 04:49:04,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 04:49:04,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 04:49:04,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 04:49:04,571 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 04:49:04,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 04:49:04,571 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 04:49:04,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 04:49:04,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 04:49:04,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 04:49:04,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 04:49:04,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 04:49:04,572 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 04:49:04,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 04:49:04,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 04:49:04,572 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 04:49:04,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 04:49:04,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 04:49:04,572 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 04:49:04,572 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 04:49:04,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 04:49:04,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 04:49:04,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 04:49:04,922 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 04:49:04,923 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 04:49:04,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/just_assert.i [2023-04-01 04:49:06,132 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 04:49:06,397 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 04:49:06,397 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/just_assert.i [2023-04-01 04:49:06,416 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac6927bf5/36abd859c4a742c198eebaa6acf20a7b/FLAGa8dd30b43 [2023-04-01 04:49:06,441 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac6927bf5/36abd859c4a742c198eebaa6acf20a7b [2023-04-01 04:49:06,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 04:49:06,444 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 04:49:06,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 04:49:06,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 04:49:06,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 04:49:06,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 04:49:06" (1/1) ... [2023-04-01 04:49:06,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d0dd0bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:49:06, skipping insertion in model container [2023-04-01 04:49:06,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 04:49:06" (1/1) ... [2023-04-01 04:49:06,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 04:49:06,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 04:49:06,613 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/ldv-regression/just_assert.i[300,313] [2023-04-01 04:49:06,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 04:49:06,629 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 04:49:06,637 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/ldv-regression/just_assert.i[300,313] [2023-04-01 04:49:06,637 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 04:49:06,646 INFO L208 MainTranslator]: Completed translation [2023-04-01 04:49:06,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:49:06 WrapperNode [2023-04-01 04:49:06,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 04:49:06,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 04:49:06,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 04:49:06,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 04:49:06,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:49:06" (1/1) ... [2023-04-01 04:49:06,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:49:06" (1/1) ... [2023-04-01 04:49:06,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:49:06" (1/1) ... [2023-04-01 04:49:06,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:49:06" (1/1) ... [2023-04-01 04:49:06,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:49:06" (1/1) ... [2023-04-01 04:49:06,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:49:06" (1/1) ... [2023-04-01 04:49:06,664 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:49:06" (1/1) ... [2023-04-01 04:49:06,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:49:06" (1/1) ... [2023-04-01 04:49:06,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 04:49:06,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 04:49:06,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 04:49:06,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 04:49:06,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:49:06" (1/1) ... [2023-04-01 04:49:06,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 04:49:06,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:49:06,702 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 04:49:06,709 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 04:49:06,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 04:49:06,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 04:49:06,745 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 04:49:06,745 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 04:49:06,745 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 04:49:06,745 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 04:49:06,745 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 04:49:06,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 04:49:06,746 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 04:49:06,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 04:49:06,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 04:49:06,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 04:49:06,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 04:49:06,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 04:49:06,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 04:49:06,794 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 04:49:06,796 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 04:49:06,892 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 04:49:06,903 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 04:49:06,903 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 04:49:06,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 04:49:06 BoogieIcfgContainer [2023-04-01 04:49:06,905 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 04:49:06,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 04:49:06,907 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 04:49:06,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 04:49:06,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 04:49:06" (1/3) ... [2023-04-01 04:49:06,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a6273b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 04:49:06, skipping insertion in model container [2023-04-01 04:49:06,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:49:06" (2/3) ... [2023-04-01 04:49:06,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a6273b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 04:49:06, skipping insertion in model container [2023-04-01 04:49:06,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 04:49:06" (3/3) ... [2023-04-01 04:49:06,911 INFO L112 eAbstractionObserver]: Analyzing ICFG just_assert.i [2023-04-01 04:49:06,924 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 04:49:06,925 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 04:49:06,964 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 04:49:06,969 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;@46d05e46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 04:49:06,969 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 04:49:06,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 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) [2023-04-01 04:49:06,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-04-01 04:49:06,978 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:49:06,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-04-01 04:49:06,978 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:49:06,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:49:06,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1425578442, now seen corresponding path program 1 times [2023-04-01 04:49:06,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:49:06,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120558538] [2023-04-01 04:49:06,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:49:06,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:49:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:49:07,218 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 04:49:07,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:49:07,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120558538] [2023-04-01 04:49:07,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120558538] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 04:49:07,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 04:49:07,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 04:49:07,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39252603] [2023-04-01 04:49:07,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 04:49:07,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 04:49:07,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:49:07,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 04:49:07,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 04:49:07,289 INFO L87 Difference]: Start difference. First operand has 11 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 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 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 04:49:07,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:49:07,324 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2023-04-01 04:49:07,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 04:49:07,328 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 1 states have call successors, (2), 1 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 6 [2023-04-01 04:49:07,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:49:07,332 INFO L225 Difference]: With dead ends: 15 [2023-04-01 04:49:07,332 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 04:49:07,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 04:49:07,337 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 04:49:07,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 04:49:07,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 04:49:07,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 04:49:07,361 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 04:49:07,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 04:49:07,363 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2023-04-01 04:49:07,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:49:07,364 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 04:49:07,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 04:49:07,366 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 04:49:07,366 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 04:49:07,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 04:49:07,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 04:49:07,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-01 04:49:07,392 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2023-04-01 04:49:07,392 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 3) no Hoare annotation was computed. [2023-04-01 04:49:07,392 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 04:49:07,393 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-01 04:49:07,393 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-01 04:49:07,394 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-01 04:49:07,394 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-01 04:49:07,394 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 04:49:07,395 INFO L899 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2023-04-01 04:49:07,395 INFO L899 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2023-04-01 04:49:07,395 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 13) the Hoare annotation is: true [2023-04-01 04:49:07,396 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 7 13) no Hoare annotation was computed. [2023-04-01 04:49:07,396 INFO L899 garLoopResultBuilder]: For program point L9-1(lines 9 11) no Hoare annotation was computed. [2023-04-01 04:49:07,410 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-04-01 04:49:07,412 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 04:49:07,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 04:49:07 BoogieIcfgContainer [2023-04-01 04:49:07,415 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 04:49:07,416 INFO L158 Benchmark]: Toolchain (without parser) took 971.55ms. Allocated memory is still 271.6MB. Free memory was 233.2MB in the beginning and 191.0MB in the end (delta: 42.2MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. [2023-04-01 04:49:07,416 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 183.5MB. Free memory is still 130.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 04:49:07,416 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.63ms. Allocated memory is still 271.6MB. Free memory was 233.2MB in the beginning and 223.7MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-04-01 04:49:07,417 INFO L158 Benchmark]: Boogie Preprocessor took 18.50ms. Allocated memory is still 271.6MB. Free memory was 223.7MB in the beginning and 222.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-01 04:49:07,417 INFO L158 Benchmark]: RCFGBuilder took 238.86ms. Allocated memory is still 271.6MB. Free memory was 222.1MB in the beginning and 212.2MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-01 04:49:07,417 INFO L158 Benchmark]: TraceAbstraction took 508.25ms. Allocated memory is still 271.6MB. Free memory was 211.7MB in the beginning and 191.0MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-04-01 04:49:07,419 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 183.5MB. Free memory is still 130.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 200.63ms. Allocated memory is still 271.6MB. Free memory was 233.2MB in the beginning and 223.7MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.50ms. Allocated memory is still 271.6MB. Free memory was 223.7MB in the beginning and 222.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 238.86ms. Allocated memory is still 271.6MB. Free memory was 222.1MB in the beginning and 212.2MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 508.25ms. Allocated memory is still 271.6MB. Free memory was 211.7MB in the beginning and 191.0MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 10]: 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 4 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 6 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 4 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 04:49:07,455 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...