/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/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 21:20:58,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 21:20:58,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 21:20:58,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 21:20:58,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 21:20:58,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 21:20:58,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 21:20:58,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 21:20:58,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 21:20:58,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 21:20:58,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 21:20:58,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2023-04-02 21:20:58,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 21:20:58,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 21:20:58,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 21:20:58,669 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 [2023-04-02 21:20:58,683 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 21:20:58,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 21:20:58,684 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 21:20:58,684 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 21:20:58,684 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 21:20:58,684 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 21:20:58,685 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 21:20:58,685 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 21:20:58,685 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 21:20:58,685 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 21:20:58,685 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 21:20:58,685 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 21:20:58,685 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 21:20:58,685 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 21:20:58,685 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 21:20:58,685 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 21:20:58,686 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 21:20:58,686 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 21:20:58,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 21:20:58,686 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 21:20:58,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 21:20:58,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 21:20:58,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 21:20:58,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 21:20:58,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 21:20:58,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 21:20:58,687 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 21:20:58,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 21:20:58,687 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 21:20:58,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 21:20:58,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 21:20:58,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 21:20:58,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 21:20:58,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 21:20:58,688 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 21:20:58,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 21:20:58,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 21:20:58,688 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 21:20:58,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 21:20:58,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 21:20:58,688 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 21:20:58,688 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 21:20:58,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 21:20:58,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 21:20:58,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 21:20:58,976 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 21:20:58,976 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 21:20:58,977 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c [2023-04-02 21:21:00,042 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 21:21:00,162 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 21:21:00,163 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c [2023-04-02 21:21:00,166 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97bbda2c3/db45fbc2e38f480c8c7c15cb145434d1/FLAGd6100cb33 [2023-04-02 21:21:00,176 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97bbda2c3/db45fbc2e38f480c8c7c15cb145434d1 [2023-04-02 21:21:00,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 21:21:00,178 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 21:21:00,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 21:21:00,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 21:21:00,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 21:21:00,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 09:21:00" (1/1) ... [2023-04-02 21:21:00,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b1bbd55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:21:00, skipping insertion in model container [2023-04-02 21:21:00,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 09:21:00" (1/1) ... [2023-04-02 21:21:00,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 21:21:00,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 21:21:00,280 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/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c[699,712] [2023-04-02 21:21:00,283 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 21:21:00,289 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 21:21:00,297 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/floats-esbmc-regression/Float_div_bad.i.p+cfa-reducer.c[699,712] [2023-04-02 21:21:00,297 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 21:21:00,307 INFO L208 MainTranslator]: Completed translation [2023-04-02 21:21:00,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:21:00 WrapperNode [2023-04-02 21:21:00,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 21:21:00,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 21:21:00,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 21:21:00,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 21:21:00,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:21:00" (1/1) ... [2023-04-02 21:21:00,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:21:00" (1/1) ... [2023-04-02 21:21:00,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:21:00" (1/1) ... [2023-04-02 21:21:00,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:21:00" (1/1) ... [2023-04-02 21:21:00,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:21:00" (1/1) ... [2023-04-02 21:21:00,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:21:00" (1/1) ... [2023-04-02 21:21:00,331 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:21:00" (1/1) ... [2023-04-02 21:21:00,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:21:00" (1/1) ... [2023-04-02 21:21:00,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 21:21:00,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 21:21:00,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 21:21:00,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 21:21:00,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:21:00" (1/1) ... [2023-04-02 21:21:00,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 21:21:00,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:21:00,357 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 21:21:00,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 21:21:00,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 21:21:00,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 21:21:00,421 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 21:21:00,422 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 21:21:00,422 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 21:21:00,422 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 21:21:00,422 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 21:21:00,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 21:21:00,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 21:21:00,422 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 21:21:00,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 21:21:00,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 21:21:00,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 21:21:00,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 21:21:00,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 21:21:00,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 21:21:00,520 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 21:21:00,521 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 21:21:00,665 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 21:21:00,678 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 21:21:00,678 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 21:21:00,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 09:21:00 BoogieIcfgContainer [2023-04-02 21:21:00,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 21:21:00,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 21:21:00,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 21:21:00,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 21:21:00,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 09:21:00" (1/3) ... [2023-04-02 21:21:00,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dab0986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 09:21:00, skipping insertion in model container [2023-04-02 21:21:00,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:21:00" (2/3) ... [2023-04-02 21:21:00,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dab0986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 09:21:00, skipping insertion in model container [2023-04-02 21:21:00,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 09:21:00" (3/3) ... [2023-04-02 21:21:00,692 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div_bad.i.p+cfa-reducer.c [2023-04-02 21:21:00,703 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 21:21:00,703 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 21:21:00,742 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 21:21:00,747 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;@7978aa78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 21:21:00,747 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 21:21:00,753 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 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) [2023-04-02 21:21:00,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-04-02 21:21:00,758 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:21:00,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:21:00,759 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:21:00,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:21:00,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1611580018, now seen corresponding path program 1 times [2023-04-02 21:21:00,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:21:00,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473456917] [2023-04-02 21:21:00,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:21:00,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:21:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 21:21:00,848 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-02 21:21:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 21:21:00,879 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-02 21:21:00,880 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-02 21:21:00,881 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 21:21:00,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 21:21:00,886 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-04-02 21:21:00,890 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 21:21:00,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 09:21:00 BoogieIcfgContainer [2023-04-02 21:21:00,901 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 21:21:00,903 INFO L158 Benchmark]: Toolchain (without parser) took 724.35ms. Allocated memory is still 188.7MB. Free memory was 146.5MB in the beginning and 110.3MB in the end (delta: 36.1MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2023-04-02 21:21:00,903 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 188.7MB. Free memory is still 144.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 21:21:00,904 INFO L158 Benchmark]: CACSL2BoogieTranslator took 129.22ms. Allocated memory is still 188.7MB. Free memory was 146.0MB in the beginning and 136.1MB in the end (delta: 9.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-04-02 21:21:00,904 INFO L158 Benchmark]: Boogie Preprocessor took 23.94ms. Allocated memory is still 188.7MB. Free memory was 136.1MB in the beginning and 134.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-02 21:21:00,904 INFO L158 Benchmark]: RCFGBuilder took 352.66ms. Allocated memory is still 188.7MB. Free memory was 134.5MB in the beginning and 124.4MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-04-02 21:21:00,905 INFO L158 Benchmark]: TraceAbstraction took 213.55ms. Allocated memory is still 188.7MB. Free memory was 123.5MB in the beginning and 110.3MB in the end (delta: 13.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-04-02 21:21:00,906 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 188.7MB. Free memory is still 144.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 129.22ms. Allocated memory is still 188.7MB. Free memory was 146.0MB in the beginning and 136.1MB in the end (delta: 9.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.94ms. Allocated memory is still 188.7MB. Free memory was 136.1MB in the beginning and 134.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 352.66ms. Allocated memory is still 188.7MB. Free memory was 134.5MB in the beginning and 124.4MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 213.55ms. Allocated memory is still 188.7MB. Free memory was 123.5MB in the beginning and 110.3MB in the end (delta: 13.2MB). Peak memory consumption was 13.6MB. 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 - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 12, overapproximation of someBinaryArithmeticDOUBLEoperation at line 10. Possible FailurePath: [L1] int __return_main; [L9] float main__x = 1.0; [L10] float main__x1 = main__x / 1.600000023841858; VAL [__return_main=0, main__x=1] [L12] COND FALSE !(main__x1 != main__x) [L21] int __tmp_1; [L22] __tmp_1 = main__x == 0 [L23] int __VERIFIER_assert__cond; [L24] __VERIFIER_assert__cond = __tmp_1 VAL [__VERIFIER_assert__cond=0, __return_main=0, __tmp_1=0, main__x=1] [L25] COND TRUE __VERIFIER_assert__cond == 0 VAL [__VERIFIER_assert__cond=0, __return_main=0, __tmp_1=0, main__x=1] [L27] reach_error() VAL [__VERIFIER_assert__cond=0, __return_main=0, __tmp_1=0, main__x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-04-02 21:21:00,921 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...