/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 22:59:47,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 22:59:47,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 22:59:47,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 22:59:47,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 22:59:47,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 22:59:47,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 22:59:47,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 22:59:47,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 22:59:47,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 22:59:47,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 22:59:47,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 22:59:47,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 22:59:47,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 22:59:47,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 22:59:47,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 22:59:47,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 22:59:47,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 22:59:47,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 22:59:47,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 22:59:47,725 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 22:59:47,735 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 22:59:47,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 22:59:47,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 22:59:47,737 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 22:59:47,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 22:59:47,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 22:59:47,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 22:59:47,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 22:59:47,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 22:59:47,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 22:59:47,738 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 22:59:47,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 22:59:47,738 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 22:59:47,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 22:59:47,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 22:59:47,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 22:59:47,739 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 22:59:47,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 22:59:47,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:59:47,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 22:59:47,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 22:59:47,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 22:59:47,739 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 22:59:47,739 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 22:59:47,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 22:59:47,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 22:59:47,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 22:59:47,936 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 22:59:47,936 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 22:59:47,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032a.c [2022-01-31 22:59:47,997 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbe528343/afd259d345b64b55997b9a71d5df6a75/FLAGaedcebc4b [2022-01-31 22:59:48,325 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 22:59:48,325 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032a.c [2022-01-31 22:59:48,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbe528343/afd259d345b64b55997b9a71d5df6a75/FLAGaedcebc4b [2022-01-31 22:59:48,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbe528343/afd259d345b64b55997b9a71d5df6a75 [2022-01-31 22:59:48,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 22:59:48,773 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 22:59:48,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 22:59:48,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 22:59:48,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 22:59:48,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:59:48" (1/1) ... [2022-01-31 22:59:48,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27be2c3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:59:48, skipping insertion in model container [2022-01-31 22:59:48,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:59:48" (1/1) ... [2022-01-31 22:59:48,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 22:59:48,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 22:59:48,915 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032a.c[2282,2295] [2022-01-31 22:59:48,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:59:48,921 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 22:59:48,936 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032a.c[2282,2295] [2022-01-31 22:59:48,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:59:48,945 INFO L208 MainTranslator]: Completed translation [2022-01-31 22:59:48,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:59:48 WrapperNode [2022-01-31 22:59:48,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 22:59:48,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 22:59:48,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 22:59:48,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 22:59:48,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:59:48" (1/1) ... [2022-01-31 22:59:48,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:59:48" (1/1) ... [2022-01-31 22:59:48,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:59:48" (1/1) ... [2022-01-31 22:59:48,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:59:48" (1/1) ... [2022-01-31 22:59:48,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:59:48" (1/1) ... [2022-01-31 22:59:48,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:59:48" (1/1) ... [2022-01-31 22:59:48,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:59:48" (1/1) ... [2022-01-31 22:59:48,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 22:59:48,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 22:59:48,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 22:59:48,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 22:59:48,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:59:48" (1/1) ... [2022-01-31 22:59:48,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:59:48,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 22:59:49,002 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 22:59:49,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 22:59:49,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 22:59:49,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 22:59:49,035 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 22:59:49,035 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2022-01-31 22:59:49,036 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2022-01-31 22:59:49,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2022-01-31 22:59:49,036 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 22:59:49,036 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 22:59:49,036 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 22:59:49,036 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 22:59:49,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 22:59:49,037 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2022-01-31 22:59:49,037 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2022-01-31 22:59:49,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 22:59:49,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-01-31 22:59:49,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 22:59:49,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 22:59:49,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 22:59:49,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-01-31 22:59:49,039 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2022-01-31 22:59:49,039 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 22:59:49,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 22:59:49,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 22:59:49,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 22:59:49,087 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 22:59:49,088 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 22:59:49,214 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 22:59:49,226 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 22:59:49,226 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-01-31 22:59:49,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:59:49 BoogieIcfgContainer [2022-01-31 22:59:49,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 22:59:49,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 22:59:49,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 22:59:49,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 22:59:49,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:59:48" (1/3) ... [2022-01-31 22:59:49,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a4f1a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:59:49, skipping insertion in model container [2022-01-31 22:59:49,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:59:48" (2/3) ... [2022-01-31 22:59:49,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a4f1a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:59:49, skipping insertion in model container [2022-01-31 22:59:49,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:59:49" (3/3) ... [2022-01-31 22:59:49,243 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032a.c [2022-01-31 22:59:49,246 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 22:59:49,247 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 22:59:49,274 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 22:59:49,279 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=JORDAN [2022-01-31 22:59:49,279 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 22:59:49,288 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 34 states have internal predecessors, (50), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 22:59:49,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-31 22:59:49,293 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:59:49,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:59:49,294 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:59:49,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:59:49,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1093005518, now seen corresponding path program 1 times [2022-01-31 22:59:49,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:59:49,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353158844] [2022-01-31 22:59:49,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:59:49,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:59:49,342 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:59:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:49,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:59:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:49,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 22:59:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:59:49,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:59:49,499 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:59:49,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353158844] [2022-01-31 22:59:49,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [353158844] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:59:49,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:59:49,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 22:59:49,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264557056] [2022-01-31 22:59:49,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:59:49,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 22:59:49,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:59:49,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 22:59:49,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 22:59:49,532 INFO L87 Difference]: Start difference. First operand has 43 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 34 states have internal predecessors, (50), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 22:59:49,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:59:49,677 INFO L93 Difference]: Finished difference Result 78 states and 109 transitions. [2022-01-31 22:59:49,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 22:59:49,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 3 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 19 [2022-01-31 22:59:49,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:59:49,683 INFO L225 Difference]: With dead ends: 78 [2022-01-31 22:59:49,684 INFO L226 Difference]: Without dead ends: 39 [2022-01-31 22:59:49,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 22:59:49,689 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 42 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 22:59:49,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 48 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 22:59:49,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-01-31 22:59:49,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-01-31 22:59:49,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 22:59:49,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2022-01-31 22:59:49,726 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 19 [2022-01-31 22:59:49,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:59:49,727 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2022-01-31 22:59:49,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 22:59:49,727 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2022-01-31 22:59:49,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-31 22:59:49,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:59:49,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:59:49,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 22:59:49,730 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:59:49,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:59:49,732 INFO L85 PathProgramCache]: Analyzing trace with hash 348154190, now seen corresponding path program 1 times [2022-01-31 22:59:49,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:59:49,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783815892] [2022-01-31 22:59:49,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:59:49,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:59:49,738 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:59:49,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 22:59:49,786 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 22:59:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 22:59:49,839 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-01-31 22:59:49,839 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 22:59:49,841 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 22:59:49,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 22:59:49,845 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 22:59:49,846 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 22:59:49,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:59:49 BoogieIcfgContainer [2022-01-31 22:59:49,855 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 22:59:49,855 INFO L158 Benchmark]: Toolchain (without parser) took 1081.75ms. Allocated memory is still 188.7MB. Free memory was 135.5MB in the beginning and 108.8MB in the end (delta: 26.7MB). Peak memory consumption was 27.1MB. Max. memory is 8.0GB. [2022-01-31 22:59:49,855 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 188.7MB. Free memory was 151.8MB in the beginning and 151.7MB in the end (delta: 129.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 22:59:49,856 INFO L158 Benchmark]: CACSL2BoogieTranslator took 166.18ms. Allocated memory is still 188.7MB. Free memory was 135.3MB in the beginning and 160.2MB in the end (delta: -24.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-01-31 22:59:49,856 INFO L158 Benchmark]: Boogie Preprocessor took 30.52ms. Allocated memory is still 188.7MB. Free memory was 160.2MB in the beginning and 158.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 22:59:49,856 INFO L158 Benchmark]: RCFGBuilder took 248.24ms. Allocated memory is still 188.7MB. Free memory was 158.1MB in the beginning and 145.0MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-01-31 22:59:49,857 INFO L158 Benchmark]: TraceAbstraction took 617.94ms. Allocated memory is still 188.7MB. Free memory was 144.5MB in the beginning and 108.8MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. [2022-01-31 22:59:49,858 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 188.7MB. Free memory was 151.8MB in the beginning and 151.7MB in the end (delta: 129.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 166.18ms. Allocated memory is still 188.7MB. Free memory was 135.3MB in the beginning and 160.2MB in the end (delta: -24.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.52ms. Allocated memory is still 188.7MB. Free memory was 160.2MB in the beginning and 158.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 248.24ms. Allocated memory is still 188.7MB. Free memory was 158.1MB in the beginning and 145.0MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 617.94ms. Allocated memory is still 188.7MB. Free memory was 144.5MB in the beginning and 108.8MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 93]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 92, overapproximation of shiftRight at line 36, overapproximation of bitwiseAnd at line 37. Possible FailurePath: [L88] double x = 0.0; [L89] CALL, EXPR round_double(x) [L20] __int32_t msw, exponent_less_1023; [L21] __uint32_t lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L29] COND TRUE exponent_less_1023 < 20 [L30] COND FALSE !(exponent_less_1023 < 0) [L36] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; [L37] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L38] return x; [L89] RET, EXPR round_double(x) [L89] double res = round_double(x); [L92] EXPR res == 0.0 && __signbit_double(res) == 0 [L92] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L93] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50 IncrementalHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 46 mSDtfsCounter, 50 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, InterpolantAutomatonStates: 5, 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: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-01-31 22:59:49,887 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...